Many heavy metal Cd exits in exchange condition, which is advantageous to the research of pollution repair and is more advantageous to the government pollution.
重金属镉的形态多以可交换态存在，有利于治理污染和土壤修复。
This article studied the heavy metal pollution condition in the sediments of the coastal wetlands at the Pearl River estuary.
本文研究了珠江口滨海湿地沉积物中的重金属污染状况及其生物有效性。
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