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Heavy metal accumulation and health risk assessment of crayfish in the middle and lower reaches of Yangtze River during 2015–2017

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Abstract

This study performed statistical analysis and risk assessment of five heavy metals (As, Cd, Cr, Hg, Pb) in crayfish samples collected from six provinces in the middle and lower reaches of Yangtze River during 2015–2017. The Spearman correlation test and the results of hierarchical cluster analysis (HCA) indicated that As, Pb, and Cd in crayfish were significantly correlated, and the results of HCA showed that Jiangxi, Jiangsu, and Zhejiang were clustered into one group; Hubei, Hunan, and Anhui were clustered into another group; and provinces in the same group had spatial similarities in heavy metals. The pollution index (PI) values of five heavy metals in all provinces were below 1, implying that crayfish samples in this area were not highly contaminated. The target hazard quotient (THQ) values of five heavy metals were mainly below 1 except Hg in Anhui (2.9709), which was far beyond 1, indicating that the health risk posed by Hg exposure should not be ignored in Anhui.

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Availability of data and material

The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.

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R 3.6.1

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Funding

This work is supported by the National Key Research and Development Program of China (No. 2019YFC1606003, No. 2017YFC1602000), Major Project of National Statistical Science Foundation of China (2021LD01) and Research Foundation for Advanced Talents of Beijing Technology and Business University (No. 19008020162).

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Contributions

L. Y., W. X., and D.H. participated in statistical analysis and study design. L. Y. and W. X. performed data analysis. X.G. conducted data curation. All authors drafted the manuscript. All authors assisted in collecting data, provided critical review of the manuscript, and approved the final draft for publication.

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Correspondence to Xueli Wang.

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The authors declare no competing interests.

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Highlights

• Heavy metals in crayfish did not exceed permission limit set in GB2762-2017 (China).

• Hg and Cr and Pb and As were significantly correlated respectively.

• PI values showed that crayfish were not highly contaminated by heavy metals.

• THQ of Hg in Anhui indicated potential health risk.

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Li, Y., Wang, X., Du, H. et al. Heavy metal accumulation and health risk assessment of crayfish in the middle and lower reaches of Yangtze River during 2015–2017. Environ Monit Assess 194, 24 (2022). https://doi.org/10.1007/s10661-021-09652-4

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  • DOI: https://doi.org/10.1007/s10661-021-09652-4

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