Liu Peng-Yan, Zheng Ming-Hui, Xu Xiao-Bai
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing.
Chemosphere. 2002 Mar;46(8):1191-3. doi: 10.1016/s0045-6535(01)00202-8.
The phototransformation of polychlorinated dibenzo-p-dioxins (PCDDs) by photolysis of pentachlorophenol (PCP) on soil surface under irradiation of UV light in the laboratory has been investigated. Octachlorodibenzo-p-dioxin (OCDD) and heptachlorodibenzo-p-dioxin (H7CDD) were detected from the products of the photoreactions. The effects of soil types with different basic soil physicochemical properties were varied from silt loam, silt clay and clay soil on the formation of PCDDs by irradiation of PCP on soils surface. Fulvic acids can prevent phototransformation of PCDDs by photolysis of PCP on soil surface.
在实验室中，研究了在紫外光照射下，五氯苯酚（PCP）在土壤表面光解对多氯二苯并对二噁英（PCDDs）的光转化作用。从光反应产物中检测到了八氯二苯并对二噁英（OCDD）和七氯二苯并对二噁英（H7CDD）。不同基本土壤理化性质的土壤类型，如粉质壤土、粉质粘土和粘土，对PCP在土壤表面照射形成PCDDs的影响各不相同。富里酸可以通过抑制PCP在土壤表面的光解来阻止PCDDs的光转化。
