[Biologic monitoring of chlorine organic hydrocarbons in vinyl chloride and polyvinyl chloride production].

The authors presented data of chemical analytic control of chlorine compounds level in workplace air of vinyl chloride and polyvinyl chloride production, and biomonitoring results of vinyl chloride and 1.2-dichloroethane metabolite - thiodiacetic acid urinary level in workers of this production. Findings are exceeded hygienic norms on maximal concentrations of 1.

[Ambient and enclosed space air sampling for determination of contaminants].

The paper touches upon the issues how to correctly and maximally take single and average daily samples of ambient, residential and public building, and enclosed space air for further tests for the content of hazardous substances. The paper is debated.

[Evaluating fluorine effects in children of Irkutsk area].

The authors studied connection between exposure to fluorine compounds and fluorides excretion. Average fluorine content of urine and hair samples of children exceeds the reference values. Ambient air and soil pollution with fluorine was proved to be an important health risk factor for urban children in Irkutsk region.

[Environmental lead pollution in Ulan-Bator and children's health].

The paper gives data on environmental lead pollution (ambient air, snow, soil). There is a direct correlation between the blood content of lead in children living in different microdistricts of Ulan-Bator and the level of environmental lead pollution, which results in neurological diseases in children.

[Study of hydrogen cyanide activity in various working environment in gold-mining industry].

The study concerned an influence of saline content of liquid phase of crushed ore and presence or absence of solution blending on the process of cyanic hydrogen release in air of working area gold-mining industry.

[Role of environmental pollution with lead in children health state].

Evidence is that high environmental pollution with lead causes accumulation of the metal amounts exceeding allowable levels (10 g/dl) in serum of children, and further on to neuropsychologic disorders. The authors defined correlations between lead content of environment, serum lead level in children and changes of some neuropsychologic parameters.

[Evaluation of a chemical factor during fires].

The working conditions of firemen during active service cannot be assessed without characterizing the degree of ambient gas contamination with toxic substances. Firemen extinguish fires and liquidate accidents under difficult conditions, which presents a threat to their life and health. Fire-induced combustion products can emit as high as 100 types of chemical compounds.

[Methodical approaches to determination of microelements in biologic materials].

The authors present data on sensitivity, accuracy and reliability of analytic methods suitable for mass determination of major microelements in human biologic materials. The findings are that, considering probable microelements content, combination of atomic absorptive analyzers appears optimal.

[Characteristics of work conditions and evaluation of health status of firemen].

Hygienic evaluation of fireman's work conditions revealed that smoke generation zone near ignition source contains a complex of toxic chemicals in concentrations hundreds of times exceeding the MACs. Staffers are exposed to noise and vibration, levels of which exceed the normal values. Those who more frequently participated in fire extinguishing and therefore faced more toxic factors demonstrate higher levels of disablement.

[Impact of lead-induced environmental pollution on children's health in Mongolia].

Studies were undertaken to evaluate lead-induced environmental pollution in the urban and rural areas of Mongolia. There was a correlation between blood lead levels in children and the lead pollution of air, soil, snow cover, which is well known to affect children's morbidity.

[Urinary sulfates as a biologic indicator of exposure to methylsulfate compounds in manufacture of sulfate cellulose].

The authors studied urine excretion of sulfates before and after a shift in workers engaged into brewing and flushing shops of sulfate cellulose production, who are exposed to various amounts of methyl sulfate compounds. Significant increase of urine sulfate appeared by the end of the shift and correlated with intensity of the air pollution with methyl sulfate compounds. Lower urine excretion of sulfates occurred with longer length of service.

[Photometric detection of metacide in the air of the working area].

The method of photometric detection of metacide in the air is based on the interaction of latter with p-nitrophenyldiasonium in borate-buffer solution. The measurement takes place in 10 mm-basins at the wave-length 540 nm. The lower limit of detection is 0.

[The spectrophotometric determination of vinylimidazole and benzvinylimidazole in the air of a work area].

A spectrophotometric method of vinyl-imidazole and benzo-vinyl-imidazole detection in the air of working area is worked out. The method is based on the vinyl oxidation into formaldehyde and the detection of latter by reaction with sodium bichromotropate. The optic density is measured at 580 nm.

[The gas chromatographic determination of sulfur- and oxygen-containing organic compounds released into the air of cellulose sulfate works].

The article presents data on the design of sensitive, selective, useful in group analysis method to detect dimethylsulphide, dimethyldisulphide, acetic, propionic, butyric and valeric acids, methyl alcohol and phenol by means of gas chromatography in the air of cellulose sulphate production working zone. The methods were tested in examining the work conditions in Bratsk found-lavage shops.

[Photometric determination of xanthates in the air of work areas].

The article contains a description of a photometric technique for xanthate detecting in the air in the working zone area. The detection technique is based on the xanthates' interaction with the nickel salts, with the formation of yellow--coloured nickel xanthates and subsequent photometry of the 20 mn thick solution in dishes at 440 nm wave.

[Photometric determination of butyl "aeroflot" flotation agent (sodium dibutyl dithiophosphate) in the air of work zone and skin washings].

Photometric procedure of butyl "aeroflot" identification in the work zone air and in wash-out from workers' integument was developed, The procedure was based on the formation of yellow- and orange-dyed copper dibutyl dithiophosphate under butyl "aeroflot" interaction with copper sulphate with the subsequent photometry of dyed solutions for the wavelength of 420 nm in the 10-mm cell. Buffer solution with pH-9.2 was used as an absorbing solution for the workplace air sampling and integument wash-out.