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首页> 外文期刊>Moscow University Soil Science Bulletin >Priority Organic Pollutants in Soil of Arboretum of the Botanical Garden of Moscow State University: Report 3. Specific Features of Vertical Distribution Pattern of Organochlorine Pesticide in Profile of Urbanozem
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Priority Organic Pollutants in Soil of Arboretum of the Botanical Garden of Moscow State University: Report 3. Specific Features of Vertical Distribution Pattern of Organochlorine Pesticide in Profile of Urbanozem

机译：莫斯科国立大学植物园植物园土壤中的优先有机污染物：报告3. Urbanozem剖面中有机氯农药的垂直分布特征

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摘要

The vertical distribution pattern of dichlorodiphenyltrichloroethane (DDT) and its metabolites (hexachlorocyclohexane (HCH) isomers and hexachlorobenzene (HCB)) in the urbanozem of the arboretum of the Botanical Garden of Moscow State University at Vorob'evy Gory is studied. The highest contents of DDT, dichlorodiphenyldichloroethylene (DDE), and HCH isomers in the soil profile are found in the Au humus horizon and/or in the top part of the U technogenic 10—20-cm-thick layer. The greatest HCB content is typical of the U technogenic 20—30-cm-thick layer. The total content of DDT and its metabolites (156.2 mg/kg) in the surface layer is within the range typical of soils of old parks and recreational zones. The residual DDT content in the soil profile is 0.336—1.47 of the maximum permissible content. The ratio between metabolites and isomers of DDT points to its slight transformation (5.67—37.6%) and application as an industrial chemical. The contents of HCB (2.479—5.868 ug/kg) and the total content of HCH isomers (a + p + y) in the profile of the urbanozem are 1—2 orders of magnitude lower than the maximum permissible contents or approximate permissible contents (0.3824—0.9863 uu/kg) and correspond to their background levels. The ratio between the HCH isomers shows that the transformation rate of the pesticide is rather high and that in the preceding period it was mainly used in the form of lindane.
机译：研究了莫斯科州立大学植物园植物园的二氯二苯基三氯乙烷（DDT）及其代谢产物（六氯环己烷（HCH）异构体和六氯苯（HCB））的垂直分布模式。在土壤剖面中，DDT，二氯二苯基二氯乙烯（DDE）和六氯环己烷异构体的含量最高，出现在金腐殖质层和/或厚度为10-20厘米的U型技术层的顶部。 HCB含量最高的是典型的U型20-30厘米厚的层。表层中滴滴涕及其代谢产物的总含量（156.2 mg / kg）在老公园和休闲区土壤的典型范围内。土壤剖面中的残留DDT含量为最大允许含量的0.336-1.47。滴滴涕的代谢物和异构体之间的比例表明其有轻微的转化（5.67-37.6％）并被用作工业化学品。六溴环十二烷的含量（2.479-5.868 ug / kg）和六氯环己烷异构体的总含量（a + p + y）比最大允许含量或近似允许含量低1-2个数量级（ 0.3824-0.9863 uu / kg），并与其背景水平相对应。六氯环己烷异构体之间的比率表明，农药的转化率很高，并且在前一时期主要以林丹的形式使用。

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