The distribution of acid-volatile sulfide and simultaneously extracted metals in sediments from a mangrove forest and adjacent mudflat in Zhangjiang Estuary, China.
The distribution of acid-volatile sulfide and simultaneously extracted metals in sediments from a mangrove forest and adjacent mudflat in Zhangjiang Estuary, China.
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DOI：
10.1016/j.marpolbul.2010.03.029
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发表时间：
2010-08
影响因子：
5.8
通讯作者：
L. Jingchun;Y. Chong-ling;K. Spencer;Z. Ruifeng;L. Haoliang
中科院分区：
文献类型：
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作者：
L. Jingchun;Y. Chong-ling;K. Spencer;Z. Ruifeng;L. Haoliang
研究了张江口红树林、林缘和邻近泥滩沉积物中酸挥发性硫化物(AVS)和同步提取金属(SEM)的分布。目的是研究河口沉积物中AVS和SEM的空间分布，并确定红树林对沉积物中AVS和SEM浓度的影响。结果表明，森林沉积物中的AVS浓度显著低于滩涂沉积物中的AVS浓度。森林沉积物中AVS值与含水率呈显著正相关，而LOI对滩涂沉积物中AVS含量起着重要作用。在森林沉积岩心中，AVS峰值在沉积剖面中比在泥滩岩心中出现得更深。SEM与AVS的分布趋势不同，上游森林沉积物中存在潜在毒性。
The distribution of acid-volatile sulfide (AVS) and simultaneously extracted metals (SEM) were studied in sediments collected from mangrove forest, forest fringe and adjacent mudflat in the Zhangjiang Estuary, China. The aim was to examine the spatial distribution of AVS and SEM in sediments of the Estuary and determine the influence of mangrove trees on AVS and SEM concentrations in the sediments. The results indicated that AVS concentrations in forest sediments were significantly lower than those in mudflat sediments. There was a significant positive correlation between AVS values and moisture contents in forest sediments, while LOI played an important role in AVS concentrations of mudflat sediments. In the forest sediment core, the peak value of AVS appeared deeper in the sediment profile compared to it appeared in the mudflat core. The distribution of SEM showed different trends from that of AVS, and potential toxicity existed in the upriver forest sediments.