東海沉積物中多溴聯(lián)苯醚的分布特征研究
發(fā)布時(shí)間:2018-12-31 14:00
【摘要】:采集分析了中國(guó)東海28個(gè)表層沉積物和7個(gè)柱狀沉積物.結(jié)果表明,東海表層沉積物中除BDE-209外∑PBDEs的濃度范圍為0.20~2.09ng/g dw,BDE-209的濃度范圍為0.57~2.87ng/g dw,在總PBDEs中所占濃度百分比為57.9%~76.7%;接下來分別是BDE-99和BDE-47,所占比例分別為11.7%~21.5%和7.1%~17.4%.表層沉積物中PBDEs分布呈現(xiàn)出(離海岸線)由近及遠(yuǎn)濃度越來越低的趨勢(shì),由北到南濃度上升的趨勢(shì).東海柱狀沉積物中PBDEs濃度隨著深度加深呈現(xiàn)出先上升后下降的趨勢(shì),很好的反映出了PBDEs在中國(guó)大陸的使用歷史和現(xiàn)狀.表層沉積物TOC含量在0.54%~0.88%之間,柱狀沉積物TOC的含量在0.62%~0.88%之間,而且不管是表層沉積物(R2=0.723,P0.01)還是柱狀沉積物(R2=0.595,P0.01),PBDEs濃度和TOC含量之間有較強(qiáng)的線性關(guān)系,表明沉積物中TOC含量是影響PBDEs分布的一個(gè)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,
本文編號(hào):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,
本文編號(hào):2396679
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