Abstract：
:This study analyzed the seasonal variations and the spatial distributions of total mercury (THg), inorganic divalent mercury (IHg), and methylmercury (MeHg) in sediments of river mouth (RM), main channel (MC), and entrance (E) of the Port of Kaohsiung, Taiwan. The THg, IHg, and MeHg concentrations were, respectively, 198-9130, 2.6-3164, and <0.3-42.6 μg/kg in the wet season and 362-2264, 11.0-790, and 3.3-65.6 μg/kg in the dry season. As for seasonal variations, the concentrations of THg and IHg for RM sediment were higher in the wet season than in the dry season, whereas for MC and E was converse. Generally, MeHg in sediment was higher in the dry season than in the wet season. THg and IHg were mainly transported from the river, whereas MeHg was generated by onsite microbes transforming the local available IHg. Results indicated that the formation of MeHg in sediment may be mainly influenced by the concentration of IHg and seasonal variations.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Chen CF,Ju YR,Lim YC,Chen CW,Wu CH,Lin YL,Dong CDdoi
10.1016/j.jenvman.2019.109683subject
Has Abstractpub_date
2020-01-01 00:00:00pages
109683eissn
0301-4797issn
1095-8630pii
S0301-4797(19)31401-Xjournal_volume
253pub_type
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