生物浓缩系数

除佛山污泥处理的通菜对氯苯类和醚类的生物浓缩系数（BCF）大于1外，其余均小于1.0。

Except the bioconcentration factors ( BCFs ) of Foshan sludge treated Ipomoea aquatic plant to chlorobenzenes and ethers were more than 1.0 , all the others were less than 1.0 .

除个别污泥处理的不同植物对有机氯农药和多环芳烃类（菲）的生物浓缩系数（BCF）小于1.0、多环芳烃类（苯并[a]芘）大部分小于1.0外，其余均大于1.0。

Except that the bioconcentration factors ( BCFs ) of some plants treated with sludge to OCPs , part of PA and most B [ a ] P were less than 1.0 , all the others were more than 1.0 .

附加参数包括，农药挥发性，代谢增毒作用，生物浓缩系数和除草剂对后茬作物的毒性。

The additional factors including : evaporation , toxicity of metabolite , coefficient of biological concentration and toxicity of herbicide to following crops .

该系统中的生物相对于其所处水环境具有显著的富集痕量金属组分作用，生物体中Cu、Hg和As生物浓缩系数依次为1385、93和725。

The bioaccumulation factors of clams are 1385 for Cu , 93 for Hg and 725 for As .