Liu Bin, Zhang Li-shi, Zhang Jian-qing, Jiang You-sheng, Zhou Jian, Huang Hai-yan
Persistent Organic Pollution Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China.
Zhonghua Yu Fang Yi Xue Za Zhi. 2011 Dec;45(12):1068-72.
To reveal the levels and distribution of polybrominated diphenyl ethers (PBDEs) in fish and egg products at retail in Shenzhen, and to evaluate the local people's exposure to PBDEs from these food.
27 fish and egg samples were collected from supermarket and farmer's market in Shenzhen during August and October in 2008. According to the guideline of USEPA1614 method, the accelerated solvent extraction (ASE) technology was used for the extraction of PBDEs from fish and egg samples. After a series of purification processes including treatments of FMS column chromatography, acidic silica gel, silica gel and Al2O3 column, the levels of eight PBDEs congeners in the samples were determined by isotope dilution high resolution gas chromatography-high resolution mass spectrometry (HRGC-HRMS) method.
When BDE-209 was not taken into account, the median concentrations of ΣPBDEs in fish products was 914.7 pg/g wet weight, among which the datas for fresh water fish and sea fish were 328.2 and 1108.8 pg/g wet weight, respectively, showing a statistical significant difference (P < 0.05). BDE-47 was the predominant congener in fresh water fish and sea fish by a contribution proportion of 61% and 57%, respectively. The median concentrations of ΣPBDEs in egg products were 99.8 pg/g wet weight and the predominant congeners are BDE-47 and BDE-99, with a contribution proportion above 70%. BDE-209 was not detected in fresh water fish and the median concentration in sea fish and egg products are 243.7 and 472.6 pg/g wet weight, respectively, which caused the predominant congener changed to BDE-209 in egg products when BDE-209 was take into account. The median dietary intake of PBDEs from fish and egg products among local residents in Shenzhen was estimated as 102 ng/d.
The level of ΣPBDEs in fish and egg products in Shenzhen is relatively high. The characteristics of PBDEs pollution are quite different between fish and egg products. The level of daily dietary intake of PBDEs from fish and egg products among local residents in Shenzhen is also relatively high.
揭示深圳市零售的鱼类和蛋类产品中多溴二苯醚（PBDEs）的含量水平及分布情况，并评估当地居民通过这些食物对PBDEs的暴露情况。
2008年8月至10月期间，从深圳市的超市和农贸市场采集了27份鱼类和蛋类样本。按照美国环保署1614方法的指导方针，采用加速溶剂萃取（ASE）技术从鱼类和蛋类样本中萃取PBDEs。经过弗罗里硅土柱色谱、酸性硅胶、硅胶和氧化铝柱等一系列净化处理后，采用同位素稀释高分辨气相色谱 - 高分辨质谱（HRGC - HRMS）法测定样本中8种PBDEs同系物的含量水平。
不考虑BDE - 209时，鱼类产品中ΣPBDEs的中位浓度为914.7 pg/g湿重，其中淡水鱼和海鱼的数据分别为328.2和1108.8 pg/g湿重，差异具有统计学意义（P < 0.05）。BDE - 47是淡水鱼和海鱼中的主要同系物，在淡水鱼和海鱼中的贡献率分别为61%和57%。蛋类产品中ΣPBDEs的中位浓度为99.8 pg/g湿重，主要同系物为BDE - 47和BDE - 99，贡献率超过70%。淡水鱼中未检测到BDE - 209，海鱼和蛋类产品中的中位浓度分别为243.7和472.6 pg/g湿重，考虑BDE - 209后，蛋类产品中的主要同系物变为BDE - 209。深圳当地居民通过鱼类和蛋类产品摄入PBDEs的中位膳食摄入量估计为102 ng/d。
深圳市鱼类和蛋类产品中ΣPBDEs的含量水平相对较高。鱼类和蛋类产品中PBDEs的污染特征差异较大。深圳当地居民通过鱼类和蛋类产品摄入PBDEs的每日膳食摄入量水平也相对较高。
