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Distribution of selenium and its relationship to the eco-environment in Bohai Bay seawater
Duan, Liqin1,2; Song, Jinming1; Li, Xuegang1; Yuan, Huamao1; Xu, Sisi1,2
2010-08-20
发表期刊MARINE CHEMISTRY
卷号121期号:1-4页码:87-99
文章类型Article
摘要We determined the selenite (Se(IV)) and selenate (Se(VI)) concentrations in the surface and bottom waters of Bohai Bay to understand the behavior of selenium in this area. The average concentrations of selenite and selenate were 0.72 nM and 0.36 nM, respectively. The surface concentration of selenite and selenate decreased from the western bay to the bay mouth, with the highest value near the Haihe Estuary. The bottom concentration of selenite and selenate displayed a similar distribution as the surface concentration. The selenium distribution was mainly controlled by environmental factors, riverine discharges and biological activities. Based on the data in this study, a preliminary estimate of the selenium budget via riverine input has been established. According to our estimate, about 7.18 x 10(7) mmol/yr of selenium reaches the Bohai Bay via rivers. Selenium showed significant positive correlations with dissolved inorganic nitrogen (DIN). phosphate and silicates, reflecting its strong nutrient-type behavior. The selenium concentration also correlated well with the chlorophyll a concentration and phytoplankton biomass, possibly implying that selenium plays a key role in regulating the phytoplankton productivity and that phytoplankton dynamics also affect the selenium inventory in Bohai Bay. Furthermore, the selenium concentration in each site was lower than the "no-effect" value of selenium and seemed to be required for the normal growth and development of phytoplankton, but it may have adverse effects for higher trophic levels due to the bioaccumulation of selenium. (C) 2010 Elsevier B.V. All rights reserved.
关键词Selenium Speciation Distribution Environmental Parameters Bohai Bay Seawater
DOI10.1016/j.marchem.2010.03.007
收录类别SCI
语种英语
WOS记录号WOS:000286559100009
引用统计
被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/32761
专题海洋生态与环境科学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
第一作者单位中国科学院海洋研究所
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Duan, Liqin,Song, Jinming,Li, Xuegang,et al. Distribution of selenium and its relationship to the eco-environment in Bohai Bay seawater[J]. MARINE CHEMISTRY,2010,121(1-4):87-99.
APA Duan, Liqin,Song, Jinming,Li, Xuegang,Yuan, Huamao,&Xu, Sisi.(2010).Distribution of selenium and its relationship to the eco-environment in Bohai Bay seawater.MARINE CHEMISTRY,121(1-4),87-99.
MLA Duan, Liqin,et al."Distribution of selenium and its relationship to the eco-environment in Bohai Bay seawater".MARINE CHEMISTRY 121.1-4(2010):87-99.
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