Distribution and enrichment of trace metals in surface marine sediments collected by the manned submersible Jiaolong in the Yap Trench, northwest Pacific Ocean

被引：12

作者：

Yang, Jichao ^{[1
,2
]}

Cui, Zhen ^{[1
]}

Dada, Olusegun A. ^{[3
]}

Yang, Yaomin ^{[1
]}

Yu, Hongjun ^{[1
]}

Xu, Yue ^{[1
]}

Lin, Zhen ^{[1
]}

Chen, Yu ^{[1
]}

Tang, Xin ^{[1
]}

机构：

[1] State Ocean Adm, Natl Deep Sea Ctr, 1 Weiyang Rd, Qingdao 266237, Peoples R China

[2] Ocean Univ China, Qingdao 266100, Peoples R China

[3] Fed Univ Technol Akure, Dept Marine Sci & Technol, Akure 340252, Nigeria

来源：

MARINE POLLUTION BULLETIN | 2018年 / 135卷

基金：

中国博士后科学基金; 国家重点研发计划;

关键词：

Heavy metals; Deep-sea sediment pollution; Ecological risk; Yap Trench; Hadal zone; Manned submersible Jiaolong; HEAVY-METALS; INTERTIDAL SEDIMENTS; HISTORICAL TRENDS; CONTAMINATION; SEA; BAY; POLLUTION; MARMARA; ESTUARY; CHINA;

D O I：

10.1016/j.marpolbul.2018.08.038

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, we carried out grain size and heavy metal analyses and also assessed heavy metal enrichment and ecological risk indices in ten sediment samples collected by the manned submersible Jiaolong at different segments of the Yap Trench. The results showed that the sediments in the Yap Trench were mainly slumping deposits composed of sandy silt. Heavy metals in the sediments showed different spatial distribution patterns from north to south direction of the trench. The distribution pattern of these heavy metals also differed in the eastern and western flanks of the trench. From the results of the enrichment factors, only arsenic, chromium, and manganese showed a slight enrichment. However, all elements were affected by natural factors. Further, most elements showed a low ecological risk, and only arsenic showed a moderate risk at two stations. Finally, the potential ecological risk of the whole study area was at a low level.

引用

页码：1035 / 1041

页数：7

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