title: Occurrence of PCBs, PCDD/Fs, PBDEs and DDTs in Spanish breast milk: enantiomeric fraction of chiral PCBs.
abstract: 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.
authors.affiliation: Department of Instrumental Analysis and Environmental Chemistry, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain. Luisa.Ramos-Bordajandi@ec.europa.eu
authors.forename: Luisa R
authors.initials: LR
authors.lastname: Bordajandi
authors.forename: Esteban
authors.initials: E
authors.lastname: Abad
authors.forename: María José
authors.initials: MJ
authors.lastname: González
mesh_terms: D005591:Chemical Fractionation / Q000379:methods; D003634:DDT / Q000032:analysis* / Q000737:chemistry; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry; D005260:Female; D055768:Halogenated Diphenyl Ethers; D006801:Humans; D008895:Milk, Human / Q000737:chemistry*; D010647:Phenyl Ethers / Q000032:analysis* / Q000737:chemistry; D011075:Polybrominated Biphenyls / Q000032:analysis* / Q000737:chemistry; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000737:chemistry; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D013030:Spain; D013237:Stereoisomerism
chemical_list: D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; D010647:Phenyl Ethers; D011075:Polybrominated Biphenyls; D000072317:Polychlorinated Dibenzodioxins; C086401:pentabromodiphenyl ether; D003634:DDT; D011078:Polychlorinated Biphenyls