Regional geochemical baseline establishment, heavy metal pollution assessment and investigation of its variation in response to human activities in mangrove intertidal sediments in Hainan, China

Fang LU; Yong CHEN; Wenquan LIU; Jichao YANG

doi:10.1007/s00343-025-4228-8

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Regional geochemical baseline establishment, heavy metal pollution assessment and investigation of its variation in response to human activities in mangrove intertidal sediments in Hainan, China

Chemistry | Updated：2025-12-16

- Regional geochemical baseline establishment, heavy metal pollution assessment and investigation of its variation in response to human activities in mangrove intertidal sediments in Hainan, China
- Journal of Oceanology and Limnology Vol. 43, Issue 6, Pages: 1792-1808(2025)
- Affiliations：
  
  1.College of Ocean Science and Engineering, Shandong University of Science and Technology, Qingdao 266000, China
  2.Laboratory for Marine Geology, Qingdao Marine Science and Technology Center, Qingdao 266237, China
  3.First Institute of Oceanography, Ministry of Natural Resources (MNR), Qingdao 266061, China
- Author bio：
  
  chy@fio.org.cn
- Funds：
- DOI：10.1007/s00343-025-4228-8
  CLC：
- Received：22 August 2024，
  
  Published：01 November 2025
- Accepted：
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LU Fang,CHEN Yong,LIU Wenquan,et al.Regional geochemical baseline establishment, heavy metal pollution assessment and investigation of its variation in response to human activities in mangrove intertidal sediments in Hainan, China[J].Journal of Oceanology and Limnology,2025,43(06):1792-1808.
DOI：

LU Fang,CHEN Yong,LIU Wenquan,et al.Regional geochemical baseline establishment, heavy metal pollution assessment and investigation of its variation in response to human activities in mangrove intertidal sediments in Hainan, China[J].Journal of Oceanology and Limnology,2025,43(06):1792-1808. DOI： 10.1007/s00343-025-4228-8.

摘要

Abstract

The intertidal zone of mangroves has a significant impact on the ecological environment by serving as a crucial habitat for a wide range of organisms. When assessing heavy metal contamination in sediments within this zone

it is essential to establish a regional geochemical baseline that accounts for natural variations. In this study

regional geochemical baselines of heavy metals were established based on core sediment samples collected from Dongzhai Harbor in November 2015. Linear regression analysis was employed to examine the correlations between heavy metals and potential normalized elements. Subsequently

the sediment quality and intensity of pollutant input in the sediments of a mangrove intertidal zone were evaluated with enrichment factor (EF) and excessive influx of heavy metals. The EF values for Cr

and Ni in the study area were all below 1.5

indicating minimal levels of contamination; however

minor Cu contamination was observed in the high tidal flat area due to potential terrestrial inputs. These findings suggest that the overall environmental quality about heavy metals was good within the intertidal zone of mangroves. Moreover

as for the excess fluxes of heavy metals in intertidal sediments

there was consistency between influence and intervention of human activities on sedimentary environment during the selected period when examining variation trends.

关键词

Keywords

references

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