2001—2017年我国部分地区蔬菜中砷和重金属累积特征及膳食暴露风险
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(中国疾病预防控制中心营养与健康所 卫计委微量元素重点实验室,北京 100050)

作者简介:

程家丽 女 副研究员 研究方向为食品卫生与营养 E-mail:jlcheng77@163.com

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基金项目:

国家自然科学基金项目(41701554)


Accumulation and dietary exposure risk of arsenic and heavy metals in the vegetables from some areas of China, 2001-2017
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(Key Laboratory of Trace Element Nutrition of National Health and Family Planning Commission, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China)

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    摘要:

    目的 探讨我国部分地区蔬菜中砷和重金属的累积特征,并分析潜在膳食暴露风险。方法 搜索论文数据库,收集2001—2017年发表文献中蔬菜铜(Cu)、铅(Pb)、镉(Cd)、铬(Cr)、砷(As)及汞(Hg)含量的数据,分析我国根茎类、叶菜类及茄果类蔬菜中As和重金属的污染特性,并采用美国环保署推荐的健康风险评价模型评估蔬菜中砷和重金属的膳食暴露风险。结果 3类蔬菜中Cu、Pb、Cd、Cr、As和Hg均呈非正态分布,变异系数均<10%。根茎类、叶菜类及茄果类蔬菜中Cd、As、Hg的含量均差异有统计学意义(P<0.05),叶菜类和茄果类蔬菜中Pb-Cr含量差异有统计学意义(P<0.05),但3类蔬菜中Cu含量均差异无统计学意义(P>0.05)。根茎类蔬菜中Pb、As和Hg的含量较高,叶菜类蔬菜中Cd含量较高。根茎类和叶菜类蔬菜中Pb-Cd及根茎类蔬菜中Pb-Cr相关性均较强(P<0.01)。3类蔬菜中Cu、Cd、Cr和As污染指数均在安全范围内,而根茎类和叶菜类蔬菜中的Pb和Hg均存在不同程度的污染,但基本属于轻度污染。根茎类和茄果类数值中As和重金属对成人和儿童的风险值均<1.0,但叶菜类蔬菜中Pb对成人和儿童的风险值的第95百分位数分别是1.780和2.020,表明叶菜类蔬菜中的Pb存在潜在的人体非致癌风险。结论 中国蔬菜中Cu、Cd、Cr、As和Hg整体污染较轻,但叶菜类蔬菜中Pb污染应引起重视。

    Abstract:

    Objective To investigate the accumulation of arsenic and heavy metals and to better understand the health risks associated with chemicals in vegetables from China. Methods Statistical characteristics of the concentrations of six elements, i.e., Cu, Pb, Cd, Cr, As and Hg, in vegetables from some areas of China were investigated, and their health risks were assessed using the hazard model recommended by US Environmental Protection Agency, based on the available information regarding the concentrations of arsenic and heavy metals reported in published literatures. Results The Kolmogorov-Smirnov test indicated that all the six elements in three types of vegetables had skewed concentration distributions. And the coefficients of variation of element concentrations are less than 10%. The contents of Cd, As and Hg were significantly different (P<0.05) among rhizome vegetables, leafy vegetables and eggplant vegetables. The contents of Pb and Cr were significantly different (P<0.05) among leafy vegetables and eggplant vegetables. No significant differences (P>0.05) were observed for Cu. The contents of Pb, As and Hg in rhizome and Cd concentration in leafy vegetables were relatively higher, respectively. The linear correlation of Pb-Cd in rhizomes and leafy vegetables were all stronger (P<0.01). The linear correlation of Pb-Cr was stronger in rhizomes vegetables (P<0.01). The pollution indexes showed that the levels of Cu, Cd, Cr and As in three types of vegetables were within the limits of safety. But the levels of Pb and Hg in rhizome vegetables and leafy vegetables belong to slight pollution. The non-carcinogenic risk levels from exposure to arsenic and metals (including Cu, Pb, Cd, Cr and Hg) were separately acceptable in rhizome vegetables and eggplant vegetables. However, health risk assessment indicated that the hazard quotients of Pb in leafy vegetables were 1.780 and 2.020 for adult and children at the 95th percentile, respectively. This indicated that the lead in leafy vegetables had a potentially non-carcinogenic risk via food exposure. Conclusion The pollution of arsenic, copper, mercury, chromium and cadmium in vegetables in China were generally low, but the lead pollution in leaf vegetables should be of concern.

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程家丽,任硕,刘婷婷,王同蕾.2001—2017年我国部分地区蔬菜中砷和重金属累积特征及膳食暴露风险[J].中国食品卫生杂志,2018,30(2):187-193.

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  • 收稿日期:2018-02-23
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  • 在线发布日期: 2018-04-28
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