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Distribution, pollution, and human health risks of persistent and potentially toxic elements in the sediments around Hainan Island, China

Marine Pollution Bulletin 2022 17 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Zhiwei Che, Zhiwei Che, Sajid Mehmood Jie Yang, Jie Yang, Jie Yang, Jie Yang, Waqas Ahmed, Waqas Ahmed, Waqas Ahmed, Jie Yang, Jie Yang, Jiechang Weng, Mohsin Mahmood, Jie Yang, Juha M. Alatalo, Jiechang Weng, Mohsin Mahmood, Jie Yang, Jie Yang, Jie Yang, Juha M. Alatalo, Juha M. Alatalo, Wenjie Liu, Jie Yang, Jie Yang, Jie Yang, Mohsin Mahmood, Jie Yang, Jie Yang, Wang Lu, Jie Yang, Jie Yang, Sajid Mehmood Juha M. Alatalo, Mir Muhammad Nizamani, Jie Yang, Wenjie Ou, Jie Yang, Mir Muhammad Nizamani, Wang Lu, Fu Xiu Xian, Fu Xiu Xian, Jie Yang, Yunting Wang, Weidong Li, Sajid Mehmood

Summary

Researchers measured six potentially toxic elements — including cadmium, arsenic, and lead — in marine sediments around Hainan Island, China, finding that cadmium and zinc showed the highest pollution levels linked to human activities, and that zinc contamination in one city posed potential carcinogenic health risks to children and adults.

Human activities have changed the global concentration of potentially toxic elements (PTEs) and significantly altered the marine ecosystem. Little is known about the concentrations of these PTEs around Hainan Island in China, or their distribution and human health risks. Understanding the variability of PTEs in marine sediments and how they accumulate is important not only for biodiversity and ecological conservation, but also for management of aquatic natural resources and human health risk assessments. This study showed that the concentrations of six PTEs (Cd, Cu, Zn, As, Pb, and Hg), sampled in nine different cities, were linked to human activities. In order to understand the ecological risks associated with PTE pollution, we calculated the contamination factor (CF), enrichment factor (EF), pollution load index (PLI), and geo-accumulation index (Igeo) of each element in each city. These indicators suggest that the pollution of Cd and Zn in the sediments of these cities is higher than that of the other PTEs. We also carried out a human health risk assessment which demonstrated the carcinogenic effects of Zn on children and adults in ChengMai, while Pb showed non-carcinogenic effects at all the studied sites, suggesting that Zn pollution in the sediments of ChengMai may pose human health risks. We would therefore advise that follow-up studies endeavor to monitor the levels of PTEs in the flora and fauna of these cities.

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