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Halogenated and parent polycyclic aromatic hydrocarbons in vegetables: Levels, dietary intakes, and health risk assessments

文献类型： 外文期刊

作者： Wang, Li 1 ; Li, Chunmei 1 ; Jiao, Bining 3 ; Li, Qiwan 2 ; Su, Hang 1 ; Wang, Jing 1 ; Jin, Fen 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Key Lab Agroprod Qual & safety, Beijing, Peoples R China

2.Yunnan Acad Agr Sci, Inst Agr Qual Stand & Testing Tech, Kunming, Yunnan, Peoples R China

3.Chinese Acad Agr Sci, Citrus Res Inst, Chongqing, Peoples R China

关键词： Halogenated polycyclic aromatic hydrocarbons;Polycyclic aromatic hydrocarbons;Vegetables;Dietary intake;Risk assessment

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2018 年 616 卷

页码：

收录情况： SCI

摘要： Halogenated polycyclic aromatic hydrocarbons (HPAHs) are attracting increasing concern because of their greater toxicity than their corresponding parent PAHs. However, human exposure to HPAHs via food consumption is not fully understood. In this study, daily intake via vegetable ingestion of 11 HPAHs and 16 PAHs and subsequent cancer risk were assessed for population in Beijing. A total of 80 vegetable samples were purchased from markets, including five leafy vegetables and three root vegetables. The concentrations of total HPAHs (Sigma HPAHs) were 0.357-0.874 ng/g in all vegetables, lower than that of total PAHs (Sigma PAHs, 10.6-47.4 ng/g). Sigma HPAHs and Sigma PAHs concentrations in leafy vegetables were higher than those in root vegetables, suggesting that the atmospheric deposition might be the dominant source of PAHs and HPAHs in leafy vegetables. Among the HPAH congeners, 2-BrFle and 9-ClFle were the predominant compounds and frequently detected in the vegetable samples. HPAHs and PAHs were also found in certificated vegetables at the concentrations of 0.466-0.751 ng/g and 10.6-38.9 ng/g, respectively, which were lower than those in non-certificated vegetables except for spinach. For leafy vegetables from local farms, the Sigma PAHs and Sigma HPAHs levels in the rape and Chinese cabbage samples significantly decreased with increasing the distance away from the incineration plant. The incremental lifetime cancer risks of HPAHs were below the acceptable risk level (10(-6)), suggesting that there might be little or no risk to consumers from these compounds in vegetables. For all population groups, children were the most sensitive population to PAHs and HPAHs, and their health issues should be paid more attention. (c) 2017 Elsevier B.V. All rights reserved.

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