Community study of spontaneous abortions: Relation to occupation and air pollution by sulfur dioxide, hydrogen sulfide, and carbon disulfide

1982 ◽  
Vol 51 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Kari Hemminki ◽  
Marja-Liisa Niemi
Keyword(s):  
Air Pollution ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Carbon Disulfide ◽  
Community Study ◽  
Spontaneous Abortions

Real-Time Measurement of SO2, H2S, and CS2 Mixed Gases Using Ultraviolet Spectroscopy and a Least Squares Algorithm

2020 ◽  
pp. 000370282097322
Author(s):  
Zhaolun Cui ◽  
Xiaoxing Zhang ◽  
Dachang Chen ◽  
Yi Li ◽  
Yufei Wang ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Least Squares ◽  
Carbon Disulfide ◽  
Sulfur Hexafluoride ◽  
Quantitative Detection ◽  
Quantitative Calculation ◽  
Efficient Detection ◽  
High Concentrations ◽  
Mixed Gases

Sulfur dioxide, carbon disulfide, and hydrogen sulfide are important decomposition products of insulating gas sulfur hexafluoride, and their types and contents are of great significance for the fault diagnosis of SF6 insulated equipment. In this paper, a method of combining ultraviolet absorption spectroscopy and least squares fitting is proposed for the quantitative calculation of sulfur dioxide, carbon disulfide, and hydrogen sulfide mixed gases. All three gases have absorption peaks in the ultraviolet band and they overlap with each other which makes it hard to determinate the concentrations of the three gases directly. During the experiment, we found that high concentrations of sulfur dioxide and carbon disulfide interfered with the hydrogen sulfide calculation and the magnitude of this interference was positively correlated with these two gas concentrations. Therefore, we found a modified equation for the correction of hydrogen sulfide. Combined with this equation, accurate quantitative detection of three gases can be achieved. The detection ranges are 0.5–10 parts per million for sulfur dioxide and hydrogen sulfide, and 10–300 parts per billion for carbon disulfide. This paper provides a simple and efficient detection method, which is convenient for integration into detection equipment and it provides a support method for the diagnosis of sulfur hexafluoride decomposition gases.

Operational overview of the NASA GTE/CITE 3 airborne instrument intercomparisons for sulfur dioxide, hydrogen sulfide, carbonyl sulfide, dimethyl sulfide, and carbon disulfide

1993 ◽  
Vol 98 (D12) ◽  
pp. 23291 ◽  
Author(s):  
James M. Hoell ◽  
Douglas D. Davis ◽  
Gerald L. Gregory ◽  
Robert J. McNeal ◽  
Richard J. Bendura ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Carbon Disulfide ◽  
Dimethyl Sulfide ◽  
Carbonyl Sulfide

scholarly journals PROBLEMS OF ENDOGENOUS FIRES IN THE DEVELOPMENT OF THE ORE DEPOSITS AND THE EXPERIENCE OF THE HYGIENIC ASSESSMENT OF THE EMERGENCY, THE EMISSION OF SULFUR-CONTAINING COMPOUNDS

2019 ◽  
Vol 98 (9) ◽  
pp. 917-922
Author(s):  
A. B. Bakirov ◽  
Timur K. Valeev ◽  
R. A. Suleimanov ◽  
N. R. Rakhmatullin ◽  
Z. B. Baktybaeva
Keyword(s):  
Air Pollution ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Spontaneous Combustion ◽  
Ore Deposits ◽  
Underground Mine ◽  
Residential Areas ◽  
Atmospheric Air ◽  
The City ◽  
Sulfur Containing

Introduction. In the development and operation of ore deposits, there is a risk of adverse effects from the occurrence of endogenous mine fires (spontaneous combustion of ore), as a result of which there are emissions of significant amounts of harmful and poisonous gas-dust impurities into the atmosphere. This study was conducted in connection with the current unfavorable sanitary and epidemiological situation in the city of Sibay of the Republic of Bashkortostan, due to the decay of sulfur-containing ore of the underground mine. The purpose of the study is to assess the ecological and hygienic situation associated with air pollution by the decay products of the ore rock of the Sibai underground mine. Material and methods. The assessment of the level of air pollution in residential areas of Sibai was carried out on the basis of the analysis of monitoring data of 4 independent laboratories (more than 40000 samples from atmospheric air). Calculations and assessment of public health risk were carried out in accordance with the Guidelines 2.1.10.1920-04. Statistical processing was carried out using the software “Microsoft Excel”. Results. During the period of an intensive decay of the ore rock of the Sibay underground mine in the atmospheric air of some areas of the city, there were found concentrations of sulfur dioxide and hydrogen sulfide exceeding hygienic standards (maximum permissible concentration) by 30 or more times and 80 or more times correspondingly. The values of hazard indices in relation to the respiratory system when combined inhalation substances: hydrogen sulfide, sulfur dioxide, nitrogen oxide, nitrogen dioxide were ranging from 0,3 (acceptable risk) to 18,4 (high risk). Sulfur dioxide (the hazard ratio to 14.0) and hydrogen sulfide (the hazard ratio to 6.6) made the greatest contribution to the formation of a health risk. Conclusion. There is a high tendency to spontaneous combustion - the emergence of endogenous fires for copper-pyrite deposits represented by pyrite, chalcopyrite, pyrrhotite. The decay of the ore rock of the Sibay underground mine resulted in air pollution of residential areas with hydrogen sulfide and sulfur dioxide, which contributed to the formation of an increased non-carcinogenic risk to public health.

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