Occurrence of PCBs, PCDD/Fs, PBDEs and DDTs in Spanish breast milk: Enantiomeric fraction of chiral PCBs

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 an...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2008, Vol.70 (4), p.567-575
Main Authors: Bordajandi, Luisa R., Abad, Esteban, González, María José
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemical Fractionation - methods
Chiral PCBs
DDT - analysis
DDT - chemistry
Enantiomeric fraction
Environmental Pollutants - analysis
Environmental Pollutants - chemistry
Environmental pollutants toxicology
Female
General aspects
Halogenated Diphenyl Ethers
Human milk
Humans
Medical sciences
Milk, Human - chemistry
PBDEs
PCBs
PCDD/Fs
Phenyl Ethers - analysis
Phenyl Ethers - chemistry
Polybrominated Biphenyls - analysis
Polybrominated Biphenyls - chemistry
Polychlorinated Biphenyls - analysis
Polychlorinated Biphenyls - chemistry
Polychlorinated Dibenzodioxins - analogs & derivatives
Polychlorinated Dibenzodioxins - analysis
Polychlorinated Dibenzodioxins - chemistry
Spain
Stereoisomerism
Toxicology
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Summary: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.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2007.07.019