title: [In-situ remediation of polychlorinated biphenyls polluted soil by ecological controlling measures: a field trial].
abstract: A field experiment was conducted to study the remediation of agricultural soils polluted with polychlorinated biphenyls (PCBs) by several ecological controlling measures. After sequential stages of liming, plowing, planting alfalfa and paddy, a significant part of PCBs was removed from the soil, with an average removal rate of 86.9%. The treatment also decreased the toxic equivalency of dioxin-like PCBs in soil. Analysis of PCB congener composition showed that at stages of liming, plowing and alfalfa planting, the low-chlorinated biphenyls were removed; whereas at the stage of paddy planting, the high-chlorinated biphenyls were degraded. The ecological controlling measures had little influence on the microbial communities in soil. The results suggest that ecological control techniques could be widely applied in the remediation of agricultural soils with PCBs contamination.
authors.affiliation: Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. cpan@issas.ac.cn
authors.forename: Cheng
authors.initials: C
authors.lastname: Pan
authors.forename: Ying
authors.initials: Y
authors.lastname: Teng
authors.forename: Yong-Ming
authors.initials: YM
authors.lastname: Luo
authors.forename: Chen
authors.initials: C
authors.lastname: Tu
authors.forename: Xiu-Fen
authors.initials: XF
authors.lastname: Li
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Ma
authors.forename: Man-Yun
authors.initials: MY
authors.lastname: Zhang
authors.forename: Zhen-Gao
authors.initials: ZG
authors.lastname: Li
authors.forename: Jing
authors.initials: J
authors.lastname: Song
mesh_terms: D002681:China; D018556:Crops, Agricultural / Q000254:growth & development; D017753:Ecosystem; D052918:Environmental Restoration and Remediation / Q000379:methods*; D000455:Medicago sativa / Q000254:growth & development / Q000378:metabolism*; D012275:Oryza / Q000254:growth & development / Q000378:metabolism*; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification*; D012987:Soil / Q000032:analysis; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000302:isolation & purification*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls