A Review on the Distribution and Cycling of Mercury in the Pacific Ocean
With the rapid development of economy in surrounding land, the Pacific Ocean is facing a number of serious environmental challenges, including mercury (Hg) pollution. Over the past several decades, a number of studies have been conducted on investigating the cycling of Hg in this ecosystem. This review summarizes recent studies on the distribution of Hg species in the water, sediment, and biota and the important processes controlling Hg cycling in the Pacific Ocean. Although a lot of studies have been conducted in this system, more efforts should be made on Hg speciation and cycling in the Pacific Ocean, especially some areas that have rarely studied so far. There is a need to measure the rates of important biogeochemical processes in this ecosystem. Application of multiple methods expected to give a better estimation of the sources and sinks of Hg species in the Pacific Ocean in future studies.
KeywordsMercury Distribution Cycling Pacific Ocean
This research was partially supported by the National Natural Science Foundation of China (Grant No. 21577134), the Fundamental Research Funds for the Central Universities (Grant Nos. 201762031, 201841008), and the Opening Funding of State Key Laboratory of Environmental Chemistry and Ecotoxicology (Grant No. KF2018-01), Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences.
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