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Species-specific bioaccumulation and health risk assessment of heavy metal in seaweeds in tropic coasts of South China Sea

文献类型: 外文期刊

作者: Peng, Ziting 1 ; Guo, Zhiqiang 1 ; Wang, Zhe 1 ; Zhang, Ruifen 2 ; Wu, Qian 3 ; Gao, Heqi 1 ; Wang, Yuxi 1 ; Shen, Zhixin 4 ; Lek, Sovan 1 ; Xiao, Juan 1 ;

作者机构: 1.Hainan Univ, Engn Res Ctr Utilizat Trop Polysaccharide Resourc, Sch Food Sci & Engn,Minist Educ,Key Lab Food Nutr, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China

2.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Guangdong Key Lab Agr Prod Proc,Minist Agr & Rura, Guangzhou 510610, Peoples R China

3.Hubei Univ Technol, Natl 111 Ctr Cellular Regulat & Mol Pharmaceut, Hubei Res Ctr Food Fermentat Engn & Technol, Key Lab Fermentat Engn,Minist Educ,Hubei Key Lab, Wuhan, Peoples R China

4.Hainan Acad Ocean & Fisheries Sci, Haikou 571126, Hainan, Peoples R China

5.Univ Toulouse III Paul Sabatier, F-31062 Toulouse 4, France

关键词: Heavy metals; Seaweeds; Health risk assessment; Bioaccumulation; South China Sea

期刊名称:SCIENCE OF THE TOTAL ENVIRONMENT ( 影响因子:10.753; 五年影响因子:10.237 )

ISSN: 0048-9697

年卷期: 2022 年 832 卷

页码:

收录情况: SCI

摘要: Seaweeds are widely known superfood in coasts where most anthropogenic heavy metal discharges are inputted and stored. The present study analyzed 11 seaweed species and 13 heavy metals to test the hypothesis that the species specific capacity of heavy metal bioaccumulation had great significance to health risk of human. The seaweeds were collected from tropic coasts of Hainan Island. We comparatively determined the bioaccumulation level of metals in different species. The results revealed that the red algae mainly concentrated V, Se, Mn, Ni, and Ag. The brown algae mainly concentrated Cr, Co, Cu, Cd, As and Fe, while the green algae mainly concentrated Zn and Pb. The cluster analysis, principal component analysis and metal pollution index indicated that Padina crassa, Sargassum thunbergii, Caulerpa racemosa and Asparagopsis taxiformis showed similar metal bioaccumulation behavior. The health risk assessment revealed that the overall hazard index (HI) of seaweeds consumption to adults was less than 1, while the HI of Sargassum oligocystum, Turbinaria ornate, Sargassum polycystum and Sargassum thunbergii consumption to children was greater than 1, suggesting a moderate or high risk to children. Moreover, the exposure amount and the carcinogenic risk parameter indicated that As and Cr were the limiting factor for seaweeds consumption. Overall, our findings here largely supported our hypothesis that the heavy metal bioaccumulation behavior and health risk was highly variable and complex among different species. We thus suggested that the species-specific health risk of heavy metals in seaweeds should be cautiously evaluated in natural environments.

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