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首页> 外文期刊>Chemosphere >Profiles and inventories of organic pollutants in sediments from the central Beibu Gulf and its coastal mangroves
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Profiles and inventories of organic pollutants in sediments from the central Beibu Gulf and its coastal mangroves

机译：北部湾中部及其沿海红树林沉积物中有机污染物的概况和清单

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Sediment cores from the central Beibu Gulf and its northern coastal mangroves were analyzed for polycyclic aromatic hydrocarbons (PAH), the organo-chlorine pesticides dichlorodiphenyltrichloroethane (DDT) and hexachlorobenzene (HCB), and polychlorinated biphenyls (PCB), to reconstruct the organic pollution history of developing south-west China. Reflecting regional development, in the gulf Sigma PAH (38-74 ng g(-1)) decreased towards the surface after peak concentrations near 10 cm, while Sigma DDT (ND - 0.5 ng g(-1)) increased due to fresh inputs, and HCB (ND - 0.04 ng g(-1)) occurred only in surface sediments. Profiles in mangrove sediments showed a continuing local scale increase in Sigma PAH (29-438 ng g(-1)) as well as Sigma DDT (0.2-41.0 ng g(-1)) and HCB (0.01-1.01 ng g(-1)) pollution, despite some variability. No trend was evident for Sigma PCB (ND - 0.22 ng g(-1)), which was not detected in the central gulf. Calculated loads estimate that 2816 ng cm(-2) PAHs and 7 ng cm(-2) DDTs are stored in depositional areas of the Beibu Gulf. Mangrove sediments, threatened by land-use-change, contain 1400-4600 ng cm(-2) PAHs and 34-39 ng cm(-2) DDTs. (C) 2016 Elsevier Ltd. All rights reserved.
机译：分析了北部湾中部及其北部沿海红树林的沉积物芯中的多环芳烃（PAH），有机氯农药二氯二苯基三氯乙烷（DDT）和六氯苯（HCB）以及多氯联苯（PCB），以重建有机污染历史西南发展中的国家。反映区域发展，海湾中的Sigma PAH（38-74 ng g（-1））在峰值浓度接近10 cm后朝表面下降，而Sigma DDT（ND-0.5 ng g（-1））由于新鲜投入而增加和HCB（ND-0.04 ng g（-1））仅在表面沉积物中发生。红树林沉积物中的剖面表明Sigma PAH（29-438 ng g（-1））以及Sigma DDT（0.2-41.0 ng g（-1））和HCB（0.01-1.01 ng g（- 1））污染，尽管有一些可变性。 Sigma PCB（ND-0.22 ng g（-1））没有明显的趋势，这在中央海湾中没有发现。计算出的负载量估计有2816 ng cm（-2）PAH和7 ng cm（-2）DDT存储在北部湾的沉积区域中。受土地用途变化威胁的红树林沉积物含有1400-4600 ng cm（-2）PAHs和34-39 ng cm（-2）DDT。 （C）2016 Elsevier Ltd.保留所有权利。

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