Is fish bone subfossil a good archive of heavy metal pollution on Nandao Island, South China Sea?
Is fish bone subfossil a good archive of heavy metal pollution on Nandao Island, South China Sea?
复制标题
鱼骨亚化石是南海南岛重金属污染的良好档案吗?
DOI:
10.1016/j.marpolbul.2019.04.036
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发表时间:
2019-06
影响因子:
5.8
通讯作者:
Xiaodong Liu
中科院分区:
文献类型:
--
作者:
Xueying Wang;Jing Sun;Libin Wu;Liqiang Xu;Yongli Zhou;Zixuan Rao;Jing Jin;Xiaodong Liu
To examine whether historical fish bones can record the magnitude of heavy metal pollution, we analyzed up to 700 years old fish bone remains extracted from an ornithogenic sediment profile on Nandao Island, South China Sea. Bulk sediments and subfossil fish bones were analyzed for elemental and mineralogical composition, as well as stable carbon and nitrogen isotopes. The results showed that pre-1850 CE fish bones experienced significant diagenesis, and could not be used to reconstruct historical record of heavy metal pollution. Fish bone diagenesis was mainly attributed to the erosion from guano in sediment profile. In contrast, the fish bones from in post-1850 CE time were well preserved and could provide useful information on historical pollution loads over the past 160 years. Since 1850 CE, relatively high concentrations of heavy metals from anthropogenic sources, especially Zn, were recorded in fish bone subfossils on Nandao Island, South China Sea.
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