东海沉积物中多溴联苯醚的分布特征研究
发布时间:2018-12-31 14:00
【摘要】:采集分析了中国东海28个表层沉积物和7个柱状沉积物.结果表明,东海表层沉积物中除BDE-209外∑PBDEs的浓度范围为0.20~2.09ng/g dw,BDE-209的浓度范围为0.57~2.87ng/g dw,在总PBDEs中所占浓度百分比为57.9%~76.7%;接下来分别是BDE-99和BDE-47,所占比例分别为11.7%~21.5%和7.1%~17.4%.表层沉积物中PBDEs分布呈现出(离海岸线)由近及远浓度越来越低的趋势,由北到南浓度上升的趋势.东海柱状沉积物中PBDEs浓度随着深度加深呈现出先上升后下降的趋势,很好的反映出了PBDEs在中国大陆的使用历史和现状.表层沉积物TOC含量在0.54%~0.88%之间,柱状沉积物TOC的含量在0.62%~0.88%之间,而且不管是表层沉积物(R2=0.723,P0.01)还是柱状沉积物(R2=0.595,P0.01),PBDEs浓度和TOC含量之间有较强的线性关系,表明沉积物中TOC含量是影响PBDEs分布的一个重要因素.
[Abstract]:28 surface sediments and 7 columnar sediments in the East China Sea were collected and analyzed. The results show that in the surface sediments of the East China Sea, the concentration range of 鈭,
本文编号:2396679
[Abstract]:28 surface sediments and 7 columnar sediments in the East China Sea were collected and analyzed. The results show that in the surface sediments of the East China Sea, the concentration range of 鈭,
本文编号:2396679
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