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中文摘要：
采用GC/MS分析方法测定了珠江三角洲水体5个钻孔(分别采自东江东莞段、珠江广州段、北江中段、西江入海口和顺德段)80个样品中10种多溴联苯醚(PBDEs,BDE209和∑9BDEs)的含量,对其沉积规律进行研究和探讨.∑9BDEs含量范围为1.54~94.8 ng·g-1,平均值为15.4 ng·g-1.BDE209含量范围为14.4~588 ng·g-1,平均值为136 ng·g-1,占总PBDEs含量的70%以上.钻孔中PBDEs含量从底部到表层呈现上升趋势,表明近年来珠江三角洲PBDEs环境排放仍在增加.5个钻孔中低溴代∑9BDEs从表层至底部逐渐增加,而高溴代∑9BDEs逐渐减少,意味着钻孔中可能存在脱溴降解行为.
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