Levels, congener profiles, and dietary intake assessment of polychlorinated dibenzo-p-dioxins/dibenzofurans and dioxin-like polychlorinated biphenyls in beef, freshwater fish, and pork marketed in Guangdong Province, China
| Autor: | Chao-Zheng Zhang, Xiao-Ling Deng, Xiao-Ming Li, Jian Wen, Fei Zou, Hui Liang, Wei-Liang Wu, Xing-fen Yang, Shao-Jun Zhou, Yonghui Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Pollution China Polychlorinated Dibenzodioxins Environmental Engineering food.ingredient Adolescent 010504 meteorology & atmospheric sciences Swine media_common.quotation_subject Population Food Contamination Fresh Water 010501 environmental sciences Biology 01 natural sciences Dietary Exposure Food group Toxicology Young Adult food Animals Humans Environmental Chemistry Child education Waste Management and Disposal Aged 0105 earth and related environmental sciences media_common Pollutant education.field_of_study Food additive Fishes food and beverages Dibenzofurans Polychlorinated Middle Aged biology.organism_classification Polychlorinated Biphenyls Red Meat Congener Environmental chemistry Freshwater fish Cattle Female Polychlorinated dibenzofurans |
| Zdroj: | Science of The Total Environment. 615:412-421 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2017.09.273 |
| Popis: | Persistent organic pollutants such as polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (DL-PCBs) consisting of non-ortho and mono-ortho PCBs are suggested to be very hazardous and have adverse effects on human health. However, their levels and congener profiles in retail foods marketed in Guangdong Province of China have not been elucidated thus far. Thus, in this study, 226 individual samples of beef, freshwater fish, and pork marketed across four regions of Guangdong Province were randomly collected during 2013-2015 to determine their levels of PCDD/Fs and DL-PCBs. The results showed that the total toxic equivalency quantities (TEQs) of most samples were below the maximum limits except for the 26 samples collected from the vicinities of pollution areas. The median total TEQs of these three categories were 0.174, 0.488, and 0.113pgTEQ/g fw, respectively, which indicated that the contamination status of the studied foods was not serious. For congener profiles, significantly different patterns were observed in three food groups, but with the same major TEQ contributors being 2,3,4,7,8-PeCDF in beef, freshwater fish, and pork. Regional differences of congener profiles in each food group were also found in this study, which might be attributed to the regionally different distributions of PCDD/Fs and DL-PCBs in environment media. The dietary exposures of four population subgroups (girls, boys, male adults, and female adults) to PCDD/Fs and DL-PCBs via three food groups were estimated to assessed the potential risks. They were all lower than the provisional tolerable monthly intake (PTMI, 70pgTEQ/kgbw/month) established by Joint FAO/WHO Expert Committee on Food Additive. In these food categories, the exposure to PCDD/Fs and DL-PCBs via freshwater fish was the highest one, which accounted for about 20% of PTMI, indicating that it was the major route to expose dioxin compounds. |
| Databáze: | OpenAIRE |
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