Gigiena i sanitariia
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Gigiena i sanitariia · Jul 1998
[The ecological hygiene assessment of the water environment based on factor analysis].
Regularities of the formation and spread of pollution of water objects in the area of sewage discharges of the cellulose-paper works were revealed. The bottom nature of water pollution and their change in their contribution in relation to the distance were determined. The bottom pollution of water was comparable with that due to sewage and varied from 46 to 69%. The transformation of organic matter makes a significant contribution to the total water pollution.
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Gigiena i sanitariia · Jul 1998
[The epidemiological validation of the MPEL for grain dust in the atmosphere].
The use of calculating and gravimetric methods for examining the grain dust pollution of the ambient air at the site of an elevator determined the maximum single, mean daily, and mean annual concentrations at different distances from the source of dust emission. The mean ratio of these concentrations was 12.1:4.3:1, respectively. The calculated concentration-effect and concentration-time relationships provided evidence for the maximum single, mean daily, and mean annual allowable concentrations for grain dust in the ambient air.