%0 Journal Article
%T Research on the Mercury Species in Jiaozhou Bay in Spring<br>春季胶州湾海水汞的形态研究
%A XU Liao-qi
%A LIU Ru-hai
%A WANG Jin-yu
%A TANG Ai-kun
%A WANG Shu
%A <br>许廖奇
%A 刘汝海
%A 王金玉
%A 汤爱坤
%A 王舒
%J 环境科学
%D 2012
%I 
%X In April 2010, seawater samples collected every twenty minutes in the Jiaozhou Bay were separated and determined in-situ and indoor to study mercury speciation and its daily variation and to further understand the end-result and effect of mercury on offshore environment. Results showed that dissolved element mercury (DEM) concentration of seawater ranged from 38.2 pg·L-1 to 156 pg·L-1, with an average value of 97.5 pg·L-1. The highest and the lowest value appeared at around 13:00 and 17:30 respectively under the influence of tide and light intensity. DEM concentration gradually declined with depth. DEM of surface sea primarily derived from photoreduction of bivalent mercury. Dissolved mercury (DHg) concentrations ranged from 7.32ng·L-1 to 49.1ng·L-1 (average value was 13.9 ng·L-1), from 4.39 ng·L-1 to 19.3 ng·L-1 (average value was 7.94 ng·L-1) for dissolved reactive mercury (RHg). The maximum peaks of DHg and RHg all appeared around 13:00, due to dirty seawater carried by tidal movement in the lowest tide. The variation trend with depth of RHg and DHg concentrations was similar at different time. Under the influence of the light and water temperature, the ratio of RHg to DHg was higher in the surface water. RHg accounted for 62% of DHg, so the mercury had relatively high activity and biological availability, and contributed to the form of DEM. The methylmercury concentration was low, with an average value of 0.30 ng·L-1, and some samples were lower than the detection limit.
%K Jiaozhou Bay
%K dissolved element mercury
%K reactive mercury
%K dissolved mercury
%K methylmercury<br>胶州湾
%K 溶解态元素汞(DEM)
%K 活性汞
%K 溶解态汞
%K 甲基汞
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=4189763B19B8AD45884AE1E766603310&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=CA4FD0336C81A37A&sid=ECE8E54D6034F642&eid=F4B561950EE1D31A&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=33