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The role of polycyclic aromatic hydrocarbons (PAHs) in geoenvironmental studies is demonstrated. Indicator ratios used to identify PAH origin are considered. Their reliability is assessed for natural and technogenic objects, taking into account their stability in the environment and the specific natural conditions. The most accurate indicators are determined for identifying combustion products of domestic and medicinal wastes.  相似文献   
2.
Mineralogy and Petrology - The Ust-Chulman apatite ore body is situated within the Nimnyrskaya apatite zone at the Aldan shield in Russia. The latest data confirm the carbonatitic origin of the...  相似文献   
3.
European experience in the groundwater use regulations is considered using the case of FRG, where such regulations are based on quality standards and quantitative characteristics of impact on groundwater and surface water and landscape features. Basic documents verified in the water use management system in EU are used.  相似文献   
4.
The paper presents data on the possibility of using the proportions of concentrations of polycyclic aromatic hydrocarbons (PAH) as indicators of the pollution sources with oil hydrocarbons. Approaches are suggested to estimate the efficiency of these indicator ratios, and the efficiency of the currently used ratios is evaluated. Multivariate data analysis is applied to demonstrate how the ratios depend on the degree of transformation of the petroleum products. The data presented in the paper are utilized to more accurately determine the indicator ratios of oil-bearing samples with regard for the contamination age.  相似文献   
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