Accumulation characteristics and estimated dietary intakes of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and polychlorinated biphenyls in plant-origin foodstuffs from Chinese markets.
Accumulation characteristics and estimated dietary intakes of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and polychlorinated biphenyls in plant-origin foodstuffs from Chinese markets.
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DOI：
10.1016/j.scitotenv.2021.145830
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发表时间：
2021-02
期刊：
影响因子：
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通讯作者：
Shuai Sun;Rong Cao;Jing Jin;Yichi Zhang;Yuan Gao;Xianbo Lu;Jiping Chen;Haijun Zhang
中科院分区：
文献类型：
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作者：
Shuai Sun;Rong Cao;Jing Jin;Yichi Zhang;Yuan Gao;Xianbo Lu;Jiping Chen;Haijun Zhang
2018-2019年，在中国大陆5个地区的市场上随机采集了9个具有代表性的植物源性食品池，调查了其中多氯二苯并二恶英和二苯并呋喃（PCDD/Fs）和多氯联苯（PCBs）的水平和累积特征。所收集的食物包括谷类、豆类、马铃薯、叶菜类、根茎类、瓜类、豆类、食用菌和混合植物油。在新鲜植物食物库中，以鲜重计，毒性当量浓度（WHO-TEQ）在上限（UB）情景中为0.9-14.5皮克/千克，在下限（LB）情景中为0.002-7.3皮克/千克;三氯二苯并呋喃和四氯苯分别是主要的多氯二苯并对二恶英/多氯二苯并呋喃和多氯联苯同系物。在混合植物油中，在UB和LB情景下，按脂质重量计算，WHO毒性当量浓度分别为129.4皮克/千克和103.6皮克/千克;高氯化多氯二苯并对二恶英/多氯二苯并呋喃和多氯联苯同系物的含量要丰富得多。在UB和LB情景下，五个调查区域的标准成人从植物食物中摄入的WHO-TEQ估计值分别为3.39-4.20和1.57-2.13 pg WHO-TEQ/kg体重/月。在所有调查区域中，谷物和植物油的消费是WHO-TEQ估计膳食摄入量的主要来源。三氯二苯并呋喃占通过植物性食物摄入的PCDD/Fs的41.1-83.9%，三氯苯占通过植物性食物摄入的PCBs的61.2-73.0%，提示三氯二苯并呋喃和三氯苯对人体健康的潜在毒性作用应引起关注。
The levels and accumulation characteristics of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) were investigated in nine pools of representative plant-origin foodstuffs randomly collected from markets located in five regions of the Chinese mainland during 2018–2019. The collected foodstuffs consisted of cereals, beans, potatoes, leafy vegetables, root and stem vegetables, melon vegetables, legume vegetables, edible fungi, and mixed vegetable oil. In the fresh plant food pools, the concentrations of toxic equivalency (WHO-TEQ) were in the ranges of 0.9–14.5 pg/kg in upperbound (UB) scenario and 0.002–7.3 pg/kg in lowerbound (LB) scenario on a fresh weight basis; and TriCDFs and TeCBs were the predominant PCDD/F and PCB homologues, respectively. In the mixed vegetable oil, the WHO-TEQ concentrations were 129.4 pg/kg and 103.6 pg/kg on a lipid weight basis in UB and LB scenarios, respectively; and high-chlorinated PCDD/F and PCB homologues were much more abundant. The estimated plant food-borne dietary intakes of WHO-TEQ by a standard adult in the five surveyed regions were in the ranges of 3.39–4.20 and 1.57–2.13 pg WHO-TEQ/kg body weight/month in UB and LB scenarios, respectively. Among all surveyed regions, consumption of cereals and vegetable oil made up the primary contributions to the estimated dietary intakes of WHO-TEQ. TriCDFs accounted for 41.1–83.9% of the PCDD/Fs dietary intakes via consumption of plant foods, and TeCBs made up 61.2–73.0% of the PCBs dietary intakes via consumption of plant foods, suggesting that the potential toxic effects of TriCDFs and TeCBs on human health should be concerned.