Vol 99, No 3 (2020)

Cover Page

ENVIRONMENTAL HYGIENE

Influence of UV radiation on the transformation of mono- and dichloramines in water of swimming pools in full-scale tests and in the experiment

Zholdakova Z.I., Lebed-Sharlevich Y.I., Belyaeva N.I., Mamonov R.A.

Abstract

Introduction. The use of chlorine-containing reagents for disinfection of water in swimming pools may lead to the formation of chloramines, both worsening the organoleptic properties of water and affecting the health of swimmers. To reduce the content of chloramines in pool water, UV radiation can be used.

The aim of work is investigation of the effect of UV radiation on the transformation of mono- and dichloramines in water.

Material and methods. The study was conducted on water samples from children’s pools, as well as in a model experiment on aquarium water with sodium hypochlorite added. Samples were irradiated with ultraviolet at doses of 40, 80 and 120 mJ/cm2. Before and after UV treatment, the content of chloramines was determined in all samples.

Results. UV dose 40 mJ/cm2 was found to be insufficient for the destruction of mono- and dichloramine in water. During UV treatment with a dose 80 mJ/cm2 a decrease in the content of monochloramines and an increase in the content of dichloramines were observed. These processes were depended on the initial concentration of active chlorine in the samples.

Conclusion. Thus, an effective UV dose to reduce the concentration of monochloramines in water with a concentration of active chlorine of 0.5 mg/l is 80 mJ/cm2. However, standard UV equipment used for disinfection of pool water cannot guarantee a reduction of chloramine concentration as it is usually designed for the minimum required UV dose (25-40 mJ/cm2). In addition, the effect of UV at this dose on water with a high content of active chlorine led to a significant increase in the content of dichloramines, which is supposedly associated with the destruction of proteins in water under the influence of UV radiation and the subsequent reaction of amino acids with active chlorine.

Hygiene and Sanitation. 2020;99(3):230-234
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The role of disinfectological investigations in the management of the complex of preventive activities

Serov A.A., Shesotpalov N.V., Gololobova T.V., Fedorova L.S., Khrapunova I.A., Merkulieva A.D.

Abstract

Introduction. Among infectious agents associated with provision of medical care, resistant ones to disinfectants from various chemical groups are more often met. In this regard, disinfection measures carried out in a medical facility are not always effective enough.

Material and methods. 9 strains of microorganisms were selected for research (Klebsiella pneumoniae -2 pcs., Enterococcus faecalis, Staphylococcus warneri, Serratia rubidaea, Staphylococcus sciuri, Enterobacter cloacae, Acinetobacter baumannii, Enterococcus faecium – per 1 pcs.), isolated from the objects of hospital environment in operating unit, intensive care and trauma units, as well as 5 samples of disinfectants from different chemical groups (on the basis of quaternary ammonium salt, tertiary amine and polyhexamethyleneguanidine; on the basis of sodium percarbonate with activator; on the basis of hydrogen peroxide and didecyldimethylammonium chloride; in the form of tablets on the basis of sodium salt sodium dichloroisocyanurate acid), used in the specified divisions of medical facities. The studies were performed in accordance with the methodology set out in methodology instructions MU 3.5.1.3439-17 “Assessment of sensitivity to disinfectants of microorganisms circulating in medical organizations.”

Results. When conducting chemical-analytical studies of samples of disinfectants 4 samples out of 5 were found to have inconsistencies in one or another quality indices. The analysis of instructions on application of disinfectants 4 means from 5 were showed to have unreasonably underestimated modes of application. According to the results of the evaluation of the sensitivity of microorganisms to disinfectants, the majority of isolated microorganisms was found to have resistance to the studied disinfectants.

Conclusion. Based on the results of the study of sensitivity of microorganisms to disinfectants, a new tactic for improving disinfection measures is proposed for medical facilities: rotation of disinfectants and an enhanced system of microbiological monitoring of the sensitivity of microorganisms to disinfectants.

Hygiene and Sanitation. 2020;99(3):235-241
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The risk of developing non-carcinogenic effects in children in industrial city in multicompartment contamination with chemical pollutants

Setko A.G., Mryasova Z.K., Terekhova E.A., Tyurin A.V.

Abstract

Introduction. Environmental factors can cause a gain in prevalence of a significant number of diseases in the population. The effect of various components on the body of children and adolescents becomes especially relevant on the territory of an industrial city, due to its increased sensitivity to adverse effects in connection with the ongoing processes of both growth and development. The article presents the results of an assessment of the non-carcinogenic risk to the health of the children living in the industrial city of Orenburg.

Material and methods. The results of laboratory studies of atmospheric air, water from centralized sources of water supply and food products as sources of potential health risks for children living in the city of Orenburg were evaluated. Hygienic and statistical research methods were used.

Results. In the industrial city, the priority media that form a high risk of developing non-carcinogenic effects were found to be contaminated food and drinking water, which create a high and very high non-carcinogenic risk for hormonal (up to HI = 13.8), cardiovascular (up to HI = 18.3), central nervous systems (up to HI = 8.3) in children and adolescents and effects on the blood (up to HI = 19.0) and kidneys (up to HI = 8.8), as well as atmospheric air when exposed to the respiratory system (HI = 7.2), which may be one of the reasons for the deviation in their state of health at the population level.

Conclusion. The complex multicomponent impact of risk factors on children living in an industrial city is a well-studied problem, the relevance of which does not decrease. Modern concepts of risk assessment make it possible to identify priority environments and their contaminants, which, of course, makes management decisions more focused both at the population and individual levels. The priority media were established to be contaminated with drinking water and contaminated food products, which form a high non-carcinogenic risk for the hormonal, cardiovascular, central nervous systems of children and adolescents and the effect on blood in the long-term dynamics, which may be one of the causes of deviations in their state health at the population level.

Hygiene and Sanitation. 2020;99(3):242-245
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Quality and safety monitoring of water biological resources from water bodies of the Central federal district of the Russian Federation

Golovina N.A., Romanova N.N., Golovin P.P., Zdrok A.V.

Abstract

Introduction. There have been given results of the assessment of quality and safety of hydrobionts exampled by fishes as main objects of amateurish fishing in water bodies of the Central Feddral District of the Russian Federation. Fishery water bodies on this territory are exposed to anthropogenic impacts and lead in the concerning volume of polluted effluent discharge in Russia.

The purpose of this study is to assess the quality and safety of hydrobionts on the example of fish - the main objects of amateur fishing in the reservoirs of the Central District of the Russian Federation.

Material and methods. Fish catching was carried out in the summer-autumn period in 2013-2017. The volume of the survey sample was about 1500 fishes. The species composition of helminths in 15 fish species from three families Cyprinidae, Percidae and pike (Esocidae)is was determined by parasitological examination. The safety of fish was evaluated using parasitological and toxicological methods.

Results. Fish from water bodies of the Lipetsk, Tambov, Belgorod, Bryansk and Tver areas has been ascertained to be facultatively available for human consumption. Clinical signs of the disease were observed in fish infected with metacercariae trematodes (posthodiplostomum and apophallus) in the form of black spots on the body. Among the detected worms, 2 species can be potentially dangerous for warm-blooded animals and humans - Pseudamphistomum truncatum (Trematoda: Opisthorchidae) and Apophallus muehlingi (Trematoda: Heterophyidae). Analysis of fish contamination with heavy metals showed excess of the permissible cadmium content in fish tissues.

Conclusion. The conducted research showed the urgency and social significance of studies on monitoring for water objects and the need to implement the preventive work with the population in such a densely populated part of the Russian Federation as the Central Federal District.

Hygiene and Sanitation. 2020;99(3):246-252
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Genotoxic properties of fluorines (review)

Kalyuzhnaya E.E., Prosekov A.Y., Volobaev V.P.

Abstract

Introduction. Consistency of fluoride excess in the human environment and professional contact with fluoride is an actual and underestimated problem. Fluoride ion is able to displace the hydroxyl group in calcium hydroxyapatites, forming stable crystals of mixed form of apatites, inducing bone pathology, fluorosis. Despite the high prevalence of fluorosis, there are only a few studies discussing the ability of fluoride ion to increase the level of genotoxic effects. At the same time, such studies are in high demand in connection with a direct correlation between genetic instability and the risk of carcinogenesis.

Material and methods. A literature search was conducted according the following queries: “fluoride, fluoride ion, fluorides, DNA damage, genetic damage, genotoxicity.” The search was conducted on the databases PubMed, MEDLINE, Embase and Google Scholar for various articles (all publications until June 2018). All publications were analyzed and included in this review.

Results. The present review examines the results of studies aimed at investigation of the ability of fluoride to induce DNA damage, published since the 50-s of 20th century to the present. The analyse of data about genotoxic and mutagenic properties of fluorine observed in In vitro and In vivo studies is provided. It is summarized that at concentrations of sodium fluoride in drinking water of more than 1 mM, fluoride ion has the ability to induce DNA damage and increase the frequency of clastogenic effects in humans and large monkeys. At the same time, for a significant increase in genotoxic effects in rodents, large concentrations of fluorides are required. The main hypotheses about the mechanisms of the fluoride genotoxic properties are described.

Conclusion. Considering results published nowadays, it can be noted that fluoride ion obviously showes a number of genotoxic features and can have mutagenic properties in case of chronic and direct contact with cellular objects. It remains questionable issue about genotoxic risk accompanied human contact with fluoride compounds.

Hygiene and Sanitation. 2020;99(3):253-258
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Hygienic substantiation for the possibility to use of sewage sludge as an organic fertilizer

Manenko A.K., Tkachenko H.M., Kasiyan O.P., Yurchenko S.T.

Abstract

Introduction. Nowadays, in front of large cities, there is an acute problem for finding ways of environmentally safely dispose of accumulated sewage sludge and the possibility of its use. The most profitable way to utilize sewage sludge is to use them as organic fertilizers in agricultural production due to the high content of biogenic elements (nitrogen, phosphorus, potassium) and organic substances in their composition. However, the presence of heavy metals, pathogens, and other toxicants necessitates the study at the regional level the possibility of using these sediments as fertilizers. In each specific case, it is necessary to apply a scientific approach to the use of sewage sludge, since their composition is characterized by a qualitative and quantitative variation of chemical compounds.

The purpose of the study was a hygienic justification for the possibility of using sludge for wastewater treatment from the municipal facilities in agricultural production as an organic fertilizer.

Material and methods. The object of the study was sludge after treatment with flocculants and centrifugation and sludge stored on the sites of Lviv municipal facilities for 1, 6 and 18 months. In the experiment, the distribution of sludge components in the “plant-soil” dynamic system, as well as the degree of their accumulation in test plants, was determined. Quantitative determination of the of chemical elements content in samples of sludge and phytomass was carried out by atomic absorption spectrophotometry.

Results. The effectiveness of the use of sludge from the municipal facilities for wastewater treatment in agricultural production as an organic fertilizer has been studied. It was found that the sludge dose of 50 tons/ha, using immediately after centrifuge, can not be used in the fields as a fertilizer. This dose caused a high phytotoxic effect on plants. The dose of used sludge (30 tons/ha after 1.5 years of maturing on silty areas) had a less pronounced phytotoxic effect, but the fact of fluorine, lead, cadmium, arsenic, mercury and manganese translocation from soil into the plants in high quantities was observed. This dose also cannot be used in the fields as a fertilizer. The use of a smaller dose should be justified by additional experiments.

Hygiene and Sanitation. 2020;99(3):259-264
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Bactericidal activity of a sanitary and hygienic product based on Bacillus subtilis bacteria strains

Tarabukina N.P., Neustroev M.P., Stepanova A.M., Parnikova S.I., Dulova S.V., Scryabina M.P., Oboeva N.A.

Abstract

Introduction. A possible alternative to traditional methods of the treatment with chemical disinfectants are effective and safe preparations based on strains of bacteria Bacillus subtilis. The development of effective hygiene products based on Bacillus subtilis bacteria strains for air sanitation, household items, and rooms that do not adversely affect the body in the presence of humans, animals, and birds is an urgent task of sanitation and hygiene.

Material and methods. Suspensions of an equal combination of the bacterial strains Bacillus subtilis TNP-3 and Bacillus subtilis TNP-5 were added to a solution of bicarbonate and sodium chloride. The strains were isolated from the permafrost soils of Yakutia, certified and deposited in the All-Russian collection of microorganisms used in animal husbandry and veterinary medicine (VGNKI, Moscow). The bactericidal activity of the «Probiodes 3 + 5» solutions was studied by the method of “coarse calico tests”. As test cultures there was used 2 billion suspension of diurnal cultures of Str. equi H-34 and Sal. abortus equi BN-12. The effectiveness of sanitization was taken into account according to the level of bacterial contamination - the number of mesophilic aerobic and facultative anaerobic microorganisms (KMAFAnM) on the skin of the nipples of the udder.

Results. Reliable disinfection of coarse calico tests contaminated with Str. equi H-34, was established with the use of «Probiodez 3 + 5» (5x108 CFU / ml) for 6 hours exposure. By increasing the dose of B. subtilis in the solution «Probiodes 3 + 5» to (1.0 × 109 CFU / ml), there was reliable disinfection of coarse calico tests contaminated with Sal. abortus equi BN-12, exposure 6 hours. The drug «Probiodes 3 + 5» helps to reduce the total bacterial contamination and subclinical mastitis, effective for sanitary-hygienic treatment in dairy cattle breeding.

Conclusion. The results of the studies allow making a conclusion that the bacterial strains B. subtilis TNP-3 and B. subtilis TNP-5 are promising for the development of effective, safe hygienic and sanitizing agents for widespread use.)

Hygiene and Sanitation. 2020;99(3):265-269
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Modern world distribution of bed bugs

Roslavtseva S.A.

Abstract

Data on the increase in the number of bed bugs (Heteroptera: Cimicidae) at the end of the XX century and the beginning of the XXI century in the highly developmental countries of Europe, America and Australia and the reasons for this phenomenon are given. In this review, the hygienic and epidemiological significance of bed bugs discussed. In the organism of bed bugs, such there were found 25 pathogens including bacteria, viruses, fungi, protozoa, helminthes, 5 of these pathogenic microorganisms can multiply in bed bugs. The interest on the hepatitis B virus and the possibility of human infection with this virus by inhalation is shown. Attention is paid to the appearance of tropical bed bug in Russia, particularly in the big cities (St. Petersburg, Moscow, Smolensk).
Hygiene and Sanitation. 2020;99(3):270-273
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Actual problems of assessing the quality of disinfection measures for parasitosis in the Russian Federation

Aslanova M.M., Gololobova T.V., Kuznetsova K.Y., Zagaynova A.V., Maniya T.R., Abramov I.A.

Abstract

Introduction. The main and the most significant issues of the management of disinfection measures taking into account modern trends and factors affecting the quality of these measures in relation to parasitic infections in the territory of the Russian Federation are considered. The professional community of physicians, epidemiologists, hygienists, disinfectants was almost powerless in the fight against slow or latent infections of a parasitic nature, which are still ca lled “neglected diseases” (“unnoticed diseases”), partly because they occur without pronounced symptoms, and there are a number of unresolved problems in the prevention and diagnosis. Despite the fact that modern medicine in the field of prevention and diagnosis of some infectious diseases has achieved good results, the problems with the disinfection of parasitic pathogens remain relevant. Environmental degradation, various natural disasters, urbanization, increased anthropogenic pressure, as well as climate change do not contribute to improving the difficult situation with regard to the spread, reproduction and formation of new stable foci of parasites. The measures for the improving the system of non-specific prevention of parasitic diseases are determined.

Material and methods. In the course of the work, there were analyzed statistical reports of the Federal Reserve and the literature data.

Results. The analysis of statistical data showed that during 2014-2018, the incidence of parasites in the Russian population remained at a high level and did not have a pronounced tendency to decrease, and the proposed anti-parasitic disinfectants cannot meet modern anti-epidemiological and hygienic requirements.

Conclusion. A number of recommendations and initiatives on disinfection measures for the prevention and spread of parasitic infections in the territory of the Russian Federation were proposed to solve the tasks. There are determined main ways of improving the system of nonspecific prevention of parasitic diseases.

Hygiene and Sanitation. 2020;99(3):274-278
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HYGIENE OF CHILDREN AND ADOLESCENTS

Physical activity and individual accidental risk of infringement of the health of schoolchildren

Novikova I.I., Yerofeev Y.V., Flyanku I.P., Usacheva E.V., Kulikova O.M.

Abstract

Introduction. The optimal physical activity of schoolchildren ensures adequate physical development, considered as the totality of the morphological and functional properties of the body that characterize the process of its growth and maturation at each age interval.

Main objective of research. To determine the values of individual accumulative risks of impairment of schoolchildren’s health components depending on the level of the physical activity and develop recommendations for their reduction.

Material and methods. The study involved 709 schoolchildren aged 12-14 years. To solve the tasks there were used hygienic methods with an assessment of the physical mode, training mode, indicators of the functional capabilities of schoolchildren; anthropometric methods; information and analytical methods and statistical methods, including associative analysis. The level of physical activity of schoolchildren was classified according to daily energy expenditure, determined by summing energy expenditure across all categories of physical activity.

Result and discussion. Individual accumulative risks of schoolchildren’s health problems were shown to be elevated in all components of health with an increase in the deviation of the level of physical activity from the optimum, and the time factor has a significant effect on the growth of individual accumulative risks of schoolchildren’s health problems. In order to reduce the likelihood of the formation of health disorders in schoolchildren, it has been established that the identification of physical activity impairments and the application of corrective measures should be carried out as early as possible - in the period up to 6 months from the moment when violations were detected. In drawing up a plan of corrective measures for the formation of an optimal level of average daily workload for school-age children, the categories of physical activity outside the normal range require a reduction to the recommended intensity and duration according to the gender and age. Associative rules have been obtained that allow identifying the causes of the disturbance of the structure of physical activity and make adjustments taking into account the relationship between categories of physical activity. The optimization was achieved by reducing the duration of time spent on various categories of physical activity to the recommended one.

Conclusion. Application of the results of this study will reduce individual accumulative risks of violations of schoolchildren’s health, preserve the health of the younger generation, and provide optimal personal and physical development.

Hygiene and Sanitation. 2020;99(3):279-285
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Long-term dynamics of changes of anthropometrical indices of school students

Pavlovskaja V.S., Kalishev M.G., Rogova S.I.

Abstract

Introduction. The relevant direction of studying the physical development of children and adolescents is the study of the dynamics of changes anthropometric indices from generation to generation. Systematic monitoring of regular indices in different regions is necessary.

Material and methods. A one-step study of anthropometric indices of 2990 healthy boys of East Kazakhstan aged from 6 to 17 years was carried out in 2016. Children were clustered into age groups and ethnicity according to the principles of anthropology. The research of anthropometric indices was performed according to generally accepted methods in the morning. The chest circumference was measured during the pause period.

The values of anthropometric indices of schoolchildren in 2016 were compared with the values of similar indices of children in 1986. Microsoft Office Excel 2007 was used to statistically process the data.

Results. In modern boys of the Kazakh nationality there is a harmonization of growth and weight indices. The maximum weight gain and chest circumference increase occurs at the same time as the “growth jump,” while 1986 schoolchildren had an average annual body weight gain one year late after the start of the rapid growth period. In Russian boys born in 1986 the maximum weight gain is established at 14 years, and in modern children - at the age of 13 years.

Conclusions. A comparative analysis of the multi-year dynamics of children’s anthropometric indices revealed acceleration trends reliably confirmed by the higher values of these indices in modern boys compared to their 1986 peers.There have been established national characteristics in the physical development of boys.

Hygiene and Sanitation. 2020;99(3):286-290
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FOOD HYGIENE

Study of actual nutrition in modern student youth

Gorbatkova E.J.

Abstract

One of the most important factors affecting the health of modern youth is nutrition. Taking into account the timeliness of this problem, a research aimed at improving the quality of nutrition for students of higher education institutions of various fields of study (Ufa, the Republic of Bashkortostan) was executed. A software directed at studying the nutritional composition of the diet of students was developed, registered and tested. The development and implementation of the program were carried out taking into account regional features of nutrition of the population of the Republic of Bashkortostan. The food ration of university students of various fields of study was also evaluated according to food groups. The insufficiency of the daily ration based on a number of indics was revealed (according to nutritional composition and food products. The nutritional status of students according to the level of insufficiency of daily intake of nutrients in order to identify the degree of risk of abnormalities in the state of health development was evaluated also. According to the document of the Government of the Russian Federation “Fundamentals of the state policy of the Russian Federation in the field of healthy nutrition of the population for the period until 2020”, implementation the development of a set of measures aimed at reducing the prevalence of diseases associated with nutrition is one of the main directions of the state policy in the field of healthy nutrition. In this regard, a conceptual medical-pedagogical model aimed at forming a system of values in relation to healthy lifestyle among students was developed. Currently, there was executed an evaluation of the effectiveness of this model in the educational process of the M. Akmulla Bashkir State Pedagogical University. There was also been studied content of macro- and microelements in the venous blood of the students based on the changes in the quality of nutrition. There was also conducted analysis of hygienic conditions of students’ educational environment of leading universities in Ufa (the Republic of Bashkortostan).
Hygiene and Sanitation. 2020;99(3):291-297
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HEALTH RISK ASSESSMENT

On the relationship of anthropogenic air pollution by particulate matter with cancer risk

Kolpakova A.F.

Abstract

In the review the author highlights contemporary concepts about the relation between the air pollution by the particulate matter (PM) and human morbidity and mortality due to oncological diseases (OD). The author used materials of the articles indexed in the PubMed and RISC databases. The role of air pollution by PM as a risk factor of carcinogenesis in dependence on size, origin, chemical composition and concentration in air is discussed. PM of road-transport origin contains transitional metals acknowledged as most dangerous and is the result the operational wear of motor transport, road surface, and vehicle emissions. Long-term exposure to PM with an aerodynamic diameter ≤2.5 increases risk of appearance of OD of different localization. Dose-dependent action of PM was established. Reduction in air pollution by PM is accompanied by decrease of premature mortality of population, including from OD, and it can be examined as a modifiable risk factor. The results of the meta-analysis of literature data about the economic damage, caused by morbidity and mortality from OD led to the conclusion that reduction in PM concentration is the most realistic and effective method to decrease these social and economic losses. The accumulated carcinogenic risk provides for the lifelong probability of the development of OD, which requires the active medical examination of workers after the curtailment of work with carcinogens for early diagnostics and treatment of OD. The important preventive measure is to decrease the level of air pollution independently on their initial concentration.
Hygiene and Sanitation. 2020;99(3):298-302
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POPULATION HEALTH

The main trends in the primary incidence of malignant neoplasms in the adult population of the oil and gas producing region

Mamyrbaev A.A., Egizbaeva D.K., Aitmaganbet P.Z., Sabyrakhmetova V.M., Umarova G.A., Sakebaeva L.D., Karashova G.I.

Abstract

The article analyzes statistical data for the adult population of the oil and gas producing region at the Aktobe district over 2011-2015. Data on the incidence of malignant (reporting statistical forms No. 35 and No. 7) of the adult population of Mugalzhar, Temirsky district in the Aktobe region were studied in the process of the implementation of the research. In the work, there were used statistical and epidemiological methods. There was a decline in the primary incidence of malignant tumors (MT) in the adult population in Mugalzhar region (there is a gradual decrease from 2011 till 2014, in 2015 — the sharp decrease of the indices of the primary incidence) and Kobdinsky region (there is a decrease of the MT from 2013 and an increase in the rate of growth in Temirsky region (the incidence of MT decreases from 2011 till 2013, the trend of increasing primary indices is traced from 2013) during the period under review. Ranking of the MT with the first time established diagnosis among the adult population living in the Mugalzhar district showed the women’s breast cancer to held the first place, the second — the esophagus, the third place is the uterus. The elderly population of the Temir district is ranked first with MT of the esophagus, on the second — MT of tracheaetracheae, bronchus, lung, in third place - MT of the women’s breast. Among the adult population of the Kobda district, which is the control, the MT of the stomach is leading, after it the MT of tracheae, bronchus, lung, the MT esophagus is on the third place. The statistically significant direct, strong correlations between the annual average daily concentration of carbon monoxide, nitric oxide, hydrocarbon in the atmospheric air and the index of the MT incidence (body of uterus, uterine cervix, breast, mammary gland) at the adult population was revealed. In the Mugalzharsky and Kobdinsky districts the proportion of people living by 2015 more than 5 years from the date of diagnosis is higher than in the Temir district. In the Temir district, the detection rate among newly registered MT patients, in comparison with the Mugalzhar and Kobdinsky regions is high at the I-II stages, and at the IV stage.
Hygiene and Sanitation. 2020;99(3):303-308
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METHODS OF HYGIENIC AND EXPERIMENTAL INVESTIGATIONS

Elementary status evaluation of Kirov region’s population by method of mass spectrometry with inductively coupled plasma

Skalnaya M.G., Grabeklis A.R., Skalny A.A., Ajsuvakova O.P., Lobanova Y.N., Serebryansky E.P., Skalny A.V.

Abstract

Introduction. The purpose of this study was to study and assess the elemental status of residents of the Kirov region as a part of the Volga Region Federal District (VFD).

Material and methods. The content of elements in the hair of 295 men and women (73 and 222, respectively, 25-50 years old) and 120 boys and girls (46 and 74, respectively, 3-15 years old) were studied using massspectrometry with inductively coupled plasma. This indicator serves an index in assessing the impact of environment on human organism. Methods of non-parametric statistics were used for the mathematical simulation of our data.

Results. It was found that women, girls and boys compared with other regions of the VFD are characterized by a relative increase in the absolute content (median) in the hair of Mg, Fe, V. For people living in the territory of the Kirov region a relative increase in the Si level in the hair is characterized with exception of boys. The relatively reduced level of Cu (with the exception of women) and Se (with the exception of men) also make oneself conspicuous.

Discussion of the results. The main problems associated with a decrease in the content of Cu and Se compounds, as well as an increase in the content of Si, Mg, Fe and V, most likely have a geochemical nature and, in particular, are associated with the chemical composition of drinking water. The hair of children in a greater degree than in adults is shown to be a biological substrate, the elemental composition of which indicates to ecological and social factors, the quality of products and the development of the health care system.

Conclusions. The obtained data can be recommended for the use as reference values in assessing the level of chemical compounds in the hair of adults and children living in the territory of the Kirov region.

Hygiene and Sanitation. 2020;99(3):309-316
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REMARKABLE AND ANNIVERSARY DATES

Significant and anniversary dates of the history of hygiene and sanitation in 2020

Article E.

Abstract

Significant and anniversary dates of the history of hygiene and sanitation in 2020
Hygiene and Sanitation. 2020;99(3):317-318
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OBITUARY

In memory of the Executive Secretary of our journal Professor Nikolay Ivanovich Prokhorov

Article E.

Abstract

In memory of the Executive Secretary of our journal Professor Nikolay Ivanovich Prokhorov
Hygiene and Sanitation. 2020;99(3):319-320
pages 319-320 views