This paper discusses the interaction of organic pollutants and heavy metals in soils, which includes adsorption, chemical reaction and microbial processes.

本文主要讨论了有机污染物和重金属在土壤中的吸附过程、化学作用过程以及生物学过程等的交互作用方式及其机理。

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Officials have been able to conclude that the dolphins' deaths were not due to lack of food, interaction with fisheries, poisoning with pesticides, biotoxin poisoning or contamination by heavy metals.

CNN: Peru investigates mystery pelican deaths