Estimation of OCDD degradation rate in soil.
The current concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were determined in soils contaminated with Chinese technical product sodium pentachlorophenate (Na-PCP). The estimated half-life of octachlorodioxin (OCDD) was about 14 years in contaminated soils based on the local historical record and mass balance calculation during the past 43 years (1960-2003). The isomer profiles remained the same regardless of paddy field soil or riverbank soil. The results indicated that the congener-specific information was efficient in estimating the PCDD/Fs fate in contaminated soils.
Zhao
Xing-ru
XR
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing 100085, China.
Zheng
Ming-hui
MH
Zhang
Bing
B
Qian
Yong
Y
Xu
Xiao-bai
XB
D000383:Agriculture; D001673:Biodegradation, Environmental; D002247:Carbon Isotopes; D002849:Chromatography, Gas; D004147:Dioxins / Q000378:metabolism*; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D006207:Half-Life; D012987:Soil / Q000032:analysis*
D002247:Carbon Isotopes; D004147:Dioxins; D012987:Soil