Eco-physiological responses of Polytrichum commune to soil contamination by polychlorinated biphenyls Analysis of PCBs in the sediments and fish from freshwater fishponds in the Pearl River Delta, China HPLC fingerprint of Angelica sinensis (Ⅰ) A Review on the Sources,Distribution and Metabolism of PCBs in Plants Chemical constituents from fruits of Amomum villosum Chemical constituents from fruits of Amomum villosum Effect of PCBs on microbial and enzyme activities in vegetated and non-vegetated mangrove sediments The advance in environmental eco-toxicology of polychlorinated biphenyls