| 东海和黄海冬季海水中二甲亚砜的分布及影响因素 |
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| 引用本文： | 王 鑫,张洪海,杨桂朋.东海和黄海冬季海水中二甲亚砜的分布及影响因素[J].环境科学研究,2014,27(10):1119-1125. |
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| 作者姓名： | 王 鑫 张洪海 杨桂朋 |
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| 作者单位： | 中国海洋大学化学化工学院, 山东 青岛 266100 |
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| 基金项目： | 国家自然科学基金项目(41030858,41320104008,41306069) |
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| 摘 要： | 于2011年12月—2012年1月对我国东海、黄海表层及不同深度海水中c(DMSOd)(DMSOd为溶解态二甲亚砜)和c(DMSOp)(DMSOp为颗粒态二甲亚砜)的分布进行了研究,并探讨了其来源及影响因素. 结果表明:表层海水中c(DMSOd)和c(DMSOp)分别为(10.10±7.54)和(8.72±7.80) nmol/L,其水平分布明显受调查海域中浮游植物组成和丰度的影响；垂直分布上,c(DMSOd)和c(DMSOp)的最大值均出现在浅水层(3~20 m). 相关分析表明,c(DMSOd)与c(DMS)(DMS为二甲基硫)之间没有相关性,但与c(DMSOp)显著相关(R=0.442, n=41, P<0.006),说明冬季表层海水中DMSOd主要来源于浮游植物细胞内DMSO的释放,而不是DMS的氧化(光化学氧化和微生物氧化). 另外,c(DMSOp)/ρ(Chla)与盐度呈正相关(R=0.532, n=46, P<0.004),说明盐度的改变会影响浮游植物组成的变化,进而影响c(DMSOp).
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| 关 键 词： | 二甲亚砜 分布 东海 黄海 |
| 收稿时间： | 2013/11/15 0:00:00 |
| 修稿时间： | 2014/3/24 0:00:00 |
Distribution of Dimethylsulfoxide and Its Influencing Factors in the East China Sea and the Yellow Sea in Winter |
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| WANG Xin,ZHANG Hong-hai and YANG Gui-peng.Distribution of Dimethylsulfoxide and Its Influencing Factors in the East China Sea and the Yellow Sea in Winter[J].Research of Environmental Sciences,2014,27(10):1119-1125. |
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| Authors: | WANG Xin ZHANG Hong-hai and YANG Gui-peng |
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| Affiliation: | College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China |
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| Abstract: | Distributions of dissolved and particulate dimethylsulfoxide (DMSOd and DMSOp) were studied in the surface waters at different depths in the East China Sea and the Yellow Sea from December 2011 to January 2012, to explore their sources and influencing factors. The concentrations of DMSOd and DMSOp in the surface waters were (10.10±7.54) and (8.72±7.80) nmol/L, respectively, which were clearly affected by phytoplanktons and abundance in the area. The vertical profiles of DMSOd and DMSOp were characterized by high concentrations in the upper mixed layer (3-20 m). No relationship was found between DMSOd and DMS, whereas a significant correlation was observed between DMSOd and DMSOp (R=0.442, n=41, P<0.006). The result suggested that DMSOd mainly originated from the diffusion of intracellular DMSOp, rather than from the oxidation of DMS (photochemical and biological oxidation). In addition, the positive linear correlation between DMSOp/Chla and salinity (R=0.532, n=46, P<0.004) indicated that changes of salinity might influence the phytoplankton taxonomic composition and thus DMSOp concentration. |
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| Keywords: | dimethylsulfoxide distribution East China Sea Yellow Sea |
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