Kalpazanov I, Argirova M
Probl Khig. 1988;13:18-29.
A method for evaluation, comparison and classification of the settlements is proposed according to the rate of pollution of the atmospheric air by a given component. For basis is accepted the sigma method. Three normative categories for classification are used. It is proceeded from the standardized towards MAC concentrations. In this case the average annual are applied. The method permits an objective comparison and classification in accordance with the rate of pollution of the settlements and their survey in dynamics. The approbation is made on the basis of the data from 1981 and 1985 for the settlements with 5 pollutants. It is established that the basic group of settlements do not change their category during the 5-year plan, while the changes of the groups are smooth in the neighbouring categories. The method gives adequate results and could serve the evaluation of the state of the atmospheric air in this country and the effectiveness of the air protective measurements.
提出了一种根据大气中给定成分的污染率对居民区进行评估、比较和分类的方法。以西格玛方法为基础。使用了三个用于分类的规范类别。分类是从标准化浓度相对于最大允许浓度（MAC）进行的。在这种情况下采用年均值。该方法能够根据居民区的污染率进行客观比较和分类，并对其进行动态监测。基于1981年和1985年5种污染物的居民区数据进行了验证。结果表明，在五年计划期间，居民区的基本类别没有变化，而相邻类别之间的变化是平缓的。该方法给出了充分的结果，可用于评估该国大气空气质量状况以及空气保护措施的有效性。
