文献类型：期刊文献

英文题名：Distribution, relationship, and risk assessment of toxic heavy metals in walnuts and growth soil

作者：Han, Yongxiang[1] Ni, Zhanglin[1] Li, Shiliang[1] Qu, Minghua[1] Tang, Fubin[1] Mo, Runhong[1] Ye, Caifen[1] Liu, Yihua[1]

第一作者：Han, Yongxiang

通信作者：Liu, YH[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Peoples R China

年份：2018

卷号：25

期号：18

起止页码：17434-17443

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;Scopus(收录号：2-s2.0-85045274637);WOS:【SCI-EXPANDED(收录号:WOS:000436879200020)】；

基金：This study was supported by the Fundamental Research Funds of CAF (CAFYBB2017QC002).

语种：英文

外文关键词：Walnut; Soil; Heavy metal; Relationship; Health assessment

摘要：Walnut is one of the most popular nuts worldwide and contains various mineral nutrients. Little is known, however, about the relationship between toxic heavy metals in walnuts and growth soil. In this study, we investigated the distribution, relationship, and risk assessment of five toxic heavy metals-lead (Pb), arsenic (As), chromium (Cr), cadmium (Cd), and mercury (Hg)-in walnuts and growth soil in the main production areas of China. The results showed that the main heavy metal pollution in walnut and soil was Pb and Cd. Regionally, positive relationships existed between heavy metals and the pH and organic matter of soil. In addition, we observed a notable uptake effect between walnut and growth soil. In this study, we found a significant correlation (r = 0.786, P < 0.05) between the bioconcentration factors and the longitude of the sampling areas. The risks (total hazard quotients) of five heavy metals toward children and adults by dietary walnut consumption were 46.8 and 56.2%, respectively. The ability to identify toxic heavy metal pollution in walnuts and growth soil could be helpful to screen suitable planting sites to prevent and control heavy metal pollution and improve the quality and safety of walnut.