Evaluation on sediments quality around the Yongxing Island of Xisha

Xu Ge; Wang Dehong; Wang Shiwen; Shi Jun; Yuan Chao; Han Liuyu

doi:10.12284/hyxb2022004

Volume 44 Issue 1

Jan. 2022

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Xu Ge，Wang Dehong，Wang Shiwen, et al. Evaluation on sediments quality around the Yongxing Island of Xisha[J]. Haiyang Xuebao，2022, 44(1)：137–146 doi: 10.12284/hyxb2022004

Citation:

Xu Ge，Wang Dehong，Wang Shiwen, et al. Evaluation on sediments quality around the Yongxing Island of Xisha[J]. Haiyang Xuebao，2022, 44(1)：137–146 doi: 10.12284/hyxb2022004

Citation:

Xu Ge，Wang Dehong，Wang Shiwen, et al. Evaluation on sediments quality around the Yongxing Island of Xisha[J]. Haiyang Xuebao，2022, 44(1)：137–146 doi: 10.12284/hyxb2022004

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Evaluation on sediments quality around the Yongxing Island of Xisha

doi: 10.12284/hyxb2022004

Haikou Marine Environmental Monitoring Center Station, State Oceanic Administration, Haikou 570311, China

Received Date: 2021-05-04
Rev Recd Date: 2021-07-23

Available Online: 2021-08-11

Publish Date: 2022-01-14

Abstract

Abstract

Based on the investigations of surface sediments at six sampling stations of nine cruises carried out in the sea around the Yongxing Island of Xisha from 2009 to 2017, the background values of seven heavy metals are determined through the process of mathematical statistics, the contents and inter-annual variations of heavy metals are analyzed, and the contents of the heavy metals are evaluated by means of single factor standard index and potential ecological risk index. The results show that the background values of heavy metals in the sediments of the study area are low, the average level of them meet the first class of marine sediment quality, and the quality of sediment is excellent. The inter-annual variations of seven heavy metals in the sediments of the study area are slightly different and generally significant and affected obviously by the development activities on the Yongxing Island. From 2009 to 2017, the contents of Zn, Cd, Cu, Cr, As and Hg are to increase first and then decrease, while the content of Pb is to increase. The assessment by means of potential ecological risk index shows that the multi year average of potential ecological risk indexes are in the order of Cd, Hg, As, Cu, Pb, Cr, Zn, and Cd and Hg are the main potential ecological risk factors of the study area.
- Yongxing Island,
- sediment,
- heavy metals,
- background values,
- inter-annual variations,
- ecological risk

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References(28)

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