婴儿配方乳粉中二噁英及其类似物污染分析

目的 了解婴儿配方乳粉中二噁英及其类似物污染水平,为相关研究提供基础数据。方法 采集601份市售婴儿配方乳粉,按照GB 5009.205—2013《食品安全国家标准 食品中二噁英及其类似物毒性当量的测定》对17种多氯代苯并二噁英和多氯代苯并呋喃(PCDD/Fs)和12种二噁英样多氯联苯(dl-PCBs)进行测定。结果 PCDD/Fs和总二噁英及其类似物的平均含量分别为0.07和0.10 pg TEQ/g,范围分别为0.001～0.69和0.003～0.91 pg TEQ/g,远低于欧盟限量规定。结论 我国婴儿配方乳粉中二噁英及其类似物污染处于低水平。建议在重点地区进一步加强污染调查,解析污染来源,为科学制定降低和减少食品中二噁英污染控制规范提供有力支持。

Analyzing of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and dioxin-like polychlorinated biphenyls in infant formula milk powders

Objective To collect data on concentrations of dioxins and their analogues in infant formula on Chinese market, and to provide scientific basis for further study. Methods A large-scale national survey on contamination of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans(PCDD/Fs) and dioxin-like polychlorinated biphenyls(dl-PCBs) in infant formula milk powder was conducted and 601 samples were collected across China. Seventeen congeners of PCDD/Fs and 12 dl-PCB congeners recommended by the World Health Organization(WHO) were determined according to the national standard method GB 5009.205-2013. Results The mean of concentrations of PCDD/Fs and total dioxins (PCDD/Fs plus dl-PCBs) were 0.07 and 0.10 pg TEQ/g respectively, within the range of 0.001-0.69 and 0.003-0.91 pg TEQ/g respectively. The concentrations were significantly lower than the maximum limit of dioxins in infant food recommended by the European Union. Conclusion The concentrations indicated the relative low level contamination of dioxins in infant formula milk powders in China. Further studies should be conducted to investigate the source of dioxins from typical regions of China, and improve the risk assessment, contamination control, reduction and legislation to protect the food safety and human health in China.