Perfluorinated compounds in milk, milk powder and yoghurt purchased from markets in China

被引:35
作者
Wang JieMing [1 ]
Shi YaLi [1 ]
Pan YuanYuan [1 ]
Cai YaQi [1 ]
机构
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
来源
CHINESE SCIENCE BULLETIN | 2010年 / 55卷 / 11期
基金
中国国家自然科学基金;
关键词
Perfluorinated compounds; milk; milk powder; yoghurt; HUMAN BREAST-MILK; PERFLUOROOCTANE SULFONATE; PERFLUOROALKYL CONTAMINANTS; DIETARY EXPOSURE; FOOD; CHEMICALS; PERFLUOROCHEMICALS; MIGRATION; WILDLIFE; INFANTS;
D O I
10.1007/s11434-010-0055-0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The exposure to perfluorinated compounds (PFCs) through the diet for humans is of great concern. Among the diet, dairy products are in great demand. This paper reports the study on the levels of 9 perfluorinated acids and 2 fluorotelomer acids in milk, milk powder and yoghurt purchased from Chinese markets from 2008 to 2009. The analytes were quantitated by high performance liquid chromatography/electrospray tandem mass spectrometry (HPLC-ESI-MS/MS). In milk samples, perfluoroheptanoic acid (PFHpA) and perfluorononanoic acid (PFNA) were detected frequently, both in 68% of samples. In milk powder samples, perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA) and PFNA were the only detected PFCs and none of them was observed in more than 35% of samples. In yoghurt, PFOA was the most frequently detected compound, found in 69% of samples. None of fluorotelomer acids was observed in any samples. The mean concentrations of total PFCs were 178 pg/g (wet weight) in milk, 98 pg/g (dry weight) in milk powder and 42 pg/g in yoghurt (wet weight). It is notable that the data of this study indicate significant differences (P < 0.001) among three kinds of packaging of milk in the concentration of total PFCs. A preliminary human health risk assessment of milk and dairy products consumption was conducted in this study. For adults, the mean daily intake of PFOS and total PFCs was equal to or lower than 23 and 167 pg kg(-1) d(-1) (body weight), respectively.
引用
收藏
页码:1020 / 1025
页数:6
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