甘肃省市售食品中二噁英类化合物污染现状研究

Pollution status of dioxin-like compounds in commercial food in Gansu province

中文关键词:  甘肃省  市售食品  二噁英类化合物  污染

英文关键词:Gansu province  commercial sold food  dioxin-like compounds  pollution

中文摘要:

      目的 了解甘肃省市售食品中二噁英类化合物的污染现状。方法 按总膳食研究方法, 对甘肃省8类市售食品样品(水产及其制品、肉类及其制品、蛋及其制品、乳及乳制品、谷类及其制品、薯类及其制品、豆类及其制品、蔬菜类及其制品)中17种多氯代苯并二噁英和多氯代苯并呋喃同系物(polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, PCDD/Fs)同系物和12种二噁英样多氯联苯(dioxin like polychlorinated biphenyls, dl-PCBs)同系物进行含量测定和毒性当量浓度汇总分析和评价。结果 甘肃省送检的食物样品中水产、肉类均检出二噁英类化合物, 其余6类食品样品中个别同系物未检出。按毒性当量(toxic equivalent, TEQ)计算时, 肉类食品样品中PCDD/Fs和dl-PCBs毒性当量浓度最高, 均为0.08 pgTEQ/g。结论 甘肃省8类市售食品样品中动物性食品二噁英类化合物检出率高于植物性食品, 肉类食品样品中PCDD/Fs和dl-PCBs毒性当量浓度均高于全国平均水平。建议对甘肃省二噁英类化合物暴露水平高的食品进行长期监测, 提出相应的风险管理措施。

英文摘要:

      Objective To investigate the pollution status of dioxin-like compounds in commercial sold food in Gansu province. Methods According to the total diet study method, 17 kinds of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/FS) homologues and 12 kinds of dioxin-like polychlorinated biphenyls (dL-PCBs) homologues in 8 types of commercial sold foods samples (aquatic products and their products, meat and their products, eggs and their products, milk and dairy products, cereals and their products, potatoes and their products, beans and their products, vegetables and their products) in Gansu province were determined and their toxicity equivalent concentrations were analyzed and evaluated. Results Dioxin compounds were detected in aquatic products and meat samples in Gansu province, and some homologues were not detected in the other 6 kinds of food samples. According to toxic equivalent (TEQ), the highest concentrations toxic equivalent of PCDD/FS and dL-PCBs were found in meat samples, both of which were 0.08 pgTEQ/g. Conclusion The detection rates of animal food dioxin compounds in 8 types of commercial food samples in Gansu Province are higher than those of plant foods, and the toxicity equivalent concentrations of PCDD/FS and dL-PCBs in meat food samples are higher than the national average level. It is suggested that the food with high exposure level of dioxin compounds should be monitored for a long time in Gansu and corresponding risk management measures should be put forward.