Research Progress in Determination of Existing Forms of Copper, Lead, Zinc and Cadmium in Seawater by Stripping Voltammetry

Abstract

The existence of trace metals in seawater determines their biotoxicity and availability, and directly affects their migration and fate, thus attracting much attention . However, the seawater matrix is complex , trace metal concentration is extremely low, sampling and analysis process is easy to introduce pollution, so the research on trace metal and its existing forms in seawater requires high sampling and test analysis technology . Among many morphological analysis methods, stripping voltammetry combines effective enrichment methods with advanced measurement techniques, has the advantages of high sensitivity, , good selectivity, etc., and is currently widely used .  Internationally, stripping voltammetry for speciation analysis of trace metals has been continuously updated and developed, but at present, the research in this field in China is still relatively scarce, whether in the offshore or the ocean, . This article will introduce the existing forms and latest research progress of several trace metals (Cu, Pb, Zn , CD) in seawater by stripping voltammetry in the world at present, so as to promote the understanding and development of marine science in our country .