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Accumulation, migration and health risk of trace metals in a soil-strawberry-human system of the Yangtze River Delta region, China

文献类型： 外文期刊

作者： Yang, Yunxi 1 ; Yang, Lanqin 1 ; Liu, Benle 3 ; Wang, Zehao 1 ; Yu, Yuechen 1 ; Bo, Luji 4 ; Li, Bing 5 ;

作者机构： 1.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China

2.Suzhou Univ Sci & Technol, Jiangsu Collaborat Innovat Ctr Technol & Mat Water, Suzhou 215009, Peoples R China

3.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China

4.Shandong Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Agroenvironm Huang Huai Hai Plain, Minist Agr & Rural Affairs, Jinan 250100, Peoples R China

5.Shandong Explorat Bur Geol & Mineral Resources, 801 Hydrogeol & Engn Geol Brigade, Jinan 250014, Peoples R China

关键词： Strawberry; Soil; Metal accumulation; Bioaccessibility; Health risk

期刊名称：ENVIRONMENTAL RESEARCH （ 影响因子：8.3； 五年影响因子：8.2 ）

ISSN： 0013-9351

年卷期： 2023 年 231 卷

页码：

收录情况： SCI

摘要： Growing concern has been paid to metals in soil-strawberry system. In contrast, few attempts have been made to investigate bioaccessible metals in strawberries and further assess health risk based on bioaccessible metals. Moreover, the connections between soil parameters (e.g. soil pH, organic matter (OM), total and bioavailable metals) and metal transfer in soil-strawberry-human system still need to be systematically investigated as well. Considering that strawberries are extensively grown under plastic-shed conditions in China, a total of 18 paired plastic-shed soil (PSS) and strawberry samples were taken from the strawberry bases located in the Yangtze River Delta of China as a case study to assess accumulation status, migration and health risk of Cd, Cr, Cu, Ni, Pb, and Zn in the PSS-strawberry-human system. Overall, heavy application of organic fertilizers induced accumulation and contamination of Cd and Zn in PSS. In particular, 55.6% and 44.4% of PSS samples had considerable and moderate ecological risk caused by Cd, respectively. Despite no metal pollution in strawberry, PSS acidification mainly caused by high nitrogen input promoted Cd and Zn uptake by strawberry and enhanced bioaccessible concentrations of Cd, Cu, and Ni. In contrast, the increased soil OM caused by organic fertilizer application decreased Zn migration in PSS-strawberry-human system. Additionally, bioaccessible metals in strawberries induced limited non-cancer and cancer risk. To mitigate accumulation of Cd and Zn in PSS and metal transfer in the food chain, feasible fertilization strategies should be developed and carried out.

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