Occurrence of PCBs, PCDD/Fs, PBDEs and DDTs in Spanish breast milk:: Enantiomeric fraction of chiral PCBs
Occurrence of PCBs, PCDD/Fs, PBDEs and DDTs in Spanish breast milk:: Enantiomeric fraction of chiral PCBs
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DOI：
10.1016/j.chemosphere.2007.07.019
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发表时间：
2008-01-01
期刊：
影响因子：
8.8
通讯作者：
Jose Gonzalez, Maria
中科院分区：
文献类型：
--
作者：
Bordajandi, Luisa R.;Abad, Esteban;Jose Gonzalez, Maria
在西班牙的一些母乳样本中，已确定了滴滴涕、多氯联苯和多氯二苯并对二恶英/多氯二苯并呋喃的浓度和特定同系物特征。与1990年代的数据相比，发现的浓度呈下降趋势。滴滴涕、多氯联苯和2，3，7，8-多氯二苯并对二恶英/多氯二苯并呋喃的平均浓度分别为238纳克/克脂肪重量、111纳克/克脂肪重量和82.1皮克/克脂肪重量。在计算世界卫生组织毒性当量时，多氯二苯并对二恶英/多氯二苯并呋喃是占总量百分比最高的一类（62-84%），其次是非邻位多氯联苯（10-25%）和单邻位多氯联苯（5-24%）。所发现的同系物特定累积模式与工业化国家的其他研究报告中所报告的模式具有可比性。此外，在母乳样本中亦检测出九种多溴联苯醚同系物的含量。浓度范围为0.04至1.38纳克/克脂肪重量。还研究了母乳样品中若干手性多氯联苯的对映体富集情况，包括同系物84、91、95、132、135、149、171、174、176和183，其中有些是首次在该矩阵中进行。(c)2007爱思唯尔有限公司保留所有权利。
Concentrations and congener specific profile of DDTs, PCBs and PCDD/Fs have been determined in a number of Spanish breast milk samples. The concentrations found indicate a decreasing tendency compared to previous data from the 1990s. Mean concentrations of 238 ng/g fat weight, 111 ng/g fat weight and 82.1 pg/g fat weight were found for DDTs, PCBs and 2,3,7,8-PCDD/Fs, respectively. When the WHO-TEQs were calculated, PCDD/Fs was the family contributing with the highest percentage to the total (62-84%), followed by the non-ortho PCBs (10-25%) and the mono-ortho PCBs (5-24%). The congener specific accumulation patterns found were comparable to those reported in other studies in industrialised countries. In addition, the levels of 9 PBDEs congeners have been also determined in the breast milk samples. The concentrations ranged from 0.04 to 1.38 ng/g fat weight. The enantiomeric enrichment of a number of chiral PCBs in the breast milk samples, including congeners 84, 91, 95, 132, 135, 149, 171, 174, 176 and 183, has also been studied, for some of them for the first time in this matrix. (c) 2007 Elsevier Ltd. All rights reserved.