Chemical Forms Extraction and Analytical Methods of Phosphorus and Heavy Metals in Sediments

This paper introduced the chemical forms and their extraction methods of phosphorus and heavy metals in sediments, with the focus on the characteristics of different extraction methods. The chemical forms of phosphorus and heavy metals are of significance for evaluating their mobility and bioavailability in sediments, and the possibility of its remediation, while chemical form extraction and analysis could reflect the contributions of natural and human activities to the sources of phosphorus and heavy metals and their eco-toxicities. Different forms of phosphorus and heavy metals could have different toxicities and environmental behaviors due to their different conversion modes. It gave several recommendations and could serve as a reference to select the optimal extraction and analytical methods on analysis of phosphorus and heavy metals forms in sewer sediments.