Abstract
The use of the lipophilic persistent organic pollutants (POPs) including polychlorinated biphenyls (PCBs) and several organochlorine pesticides (OCPs) has been prohibited for more than 30 years. In this study, we present the temporal trends of the lipophilic POP serum concentrations in Danish nulliparous pregnant women between 2011 and 2013. We randomly selected 197 pregnant women (gestational age 11–13) from the Aarhus Birth Cohort. The concentrations of the lipophilic POPs in the serum samples were analyzed using gas chromatography. The concentrations were corrected for total serum lipids. The statistical analysis was performed by regression analysis with adjustment for age, BMI, gestational age at blood draw, and smoking status. The serum concentrations of PCB 118, 138, 153, 156, 170, 180, 187, and hexachlorobenzen, trans-nonachlor, β-hexachlorocyclohexane (β-HCH), and p,p’-dichlorodiphenyldichloroethylene were lower in 2013 than in 2011. However, the oxychlordane concentration was lowest in 2011. The serum levels of most lipophilic POPs followed downward trends during the study period, which was expected, as these compounds has been banned for many years. The upward trend of oxychlordane was unexpected and presumably a chance finding.
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Abbreviations
- AMAP:
-
Arctic Monitoring and Assessment Programme
- BMI:
-
Body mass index
- CI:
-
Confidence interval
- DDE:
-
Dichlorodiphenyldichloroethylene
- DDT:
-
Dichlorodiphenyltrichloroethane
- HCB:
-
Hexachlorobenzene
- HCH:
-
Hexachlorocyclohexane
- LOQ:
-
Limit of quantification
- OCP:
-
Organochlorine pesticide
- PFAA:
-
Perfluorinated alkyl acid
- PBB:
-
Polybrominated biphenyl
- PBDE:
-
Polybrominated diphenyl ether
- PCB:
-
Polychlorinated biphenyl
- POP:
-
Persistent organic pollutant
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Acknowledgement
We thank our fellow researchers of the FETOTOX Project (http://www.fetotox.au.dk) for their contributions to the work. In addition, we want to acknowledge the work of the team at the Centre de Toxicologie, Institute National de Santé Publique du Québec, Québec, Canada, who carried out the quantitative chemical analysis. The study was supported by the Danish Council for Strategic Research (Grant No. 10-092818). The funding sources were not involved in the research activities. The Aarhus Birth Cohort Biobank was funded by a grant from the Danish National Research Foundation with additional support from Tryg Fonden and Aarhus University Research Foundation.
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Responsible editor: Hongwen Sun
In the second paragraph of the Statistics section, the text was added: However, the PBDE data were not available for 39 samples from 2011 and these samples were excluded from the statistical analyses involving ∑lipPOP
Equation 2 in statistics was corrected.
An erratum to this article is available at http://dx.doi.org/10.1007/s11356-017-9330-9.
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Bjerregaard-Olesen, C., Long, M., Ghisari, M. et al. Temporal trends of lipophilic persistent organic pollutants in serum from Danish nulliparous pregnant women 2011–2013. Environ Sci Pollut Res 24, 16592–16603 (2017). https://doi.org/10.1007/s11356-017-8992-7
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DOI: https://doi.org/10.1007/s11356-017-8992-7