期刊
ENVIRONMENTAL POLLUTION
卷 178, 期 -, 页码 433-440出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.03.059
关键词
Pentachlorophenol (PCP); Soil profiles; Flooded soils; Dissipation; Redox reaction
资金
- Major Program of National Natural Science Foundation of China [41090284, 41130532]
- National Natural Science Foundation of China [20977077, 40971136]
Pentachlorophenol (PCP) dissipation occurs naturally in flooded soils and although dissipation half-lives vary between soil profiles at the millimeter-scale the reason is poorly understood. Vertical variations of PCP dissipation were investigated in three typical Chinese paddy soils; Soil 1 (Umbraqualf), Soil 2 (Plinthudult) and Soil 3 (Tropudult). The soil depth was divided into a surface and a deep layer based upon different PCP dissipations in the surface layer of 40-93, 42-88 and 16-100% for Soils 1-3 respectively. In the deep layer, PCP was greatly dissipated in Soil 2, but much less in Soil 1 and Soil 3. Correlation analysis indicated that SO42- and Fe(III) were negatively related to PCP dissipation. SO42- and cr were highly mobile in the flooded soil profiles. Fe(III) reduction increased with increasing soil depth, and was inhibited by high SO42- concentrations. (C) 2013 Elsevier Ltd. All rights reserved.
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