TY - JOUR T1 - Determinants of persistent organic pollutant (POP) concentrations in human breast milk of a cross-sectional sample of primiparous mothers in Belgium JF - Environment International Y1 - 2019 A1 - Raf Aerts A1 - Ilse Van Overmeire A1 - Ann Colles A1 - Mirjana Andjelkovic A1 - Govindan Malarvannan A1 - Giulia Poma A1 - Elly Den Hond A1 - Els Van de Mieroop A1 - Marie-Christine Dewolf A1 - François Charlet A1 - An Van Nieuwenhuyse A1 - Joris Van Loco A1 - Adrian Covaci AB -

Background: Bio-accumulation of persistent organic pollutants (POPs) in the environment and in the food chain

can lead to high pollutant concentrations in human fat-containing tissues and breast milk.

Objectives: We aimed to identify the maternal characteristics that determined POP concentrations in breast milk

of primiparous mothers in Belgium.

Methods: Breast milk samples were obtained from a cross-sectional sample of 206 primiparous mothers in 2014.

POP concentrations in breast milk samples were determined by GC-ECNI-MS and GC-EI-MS/MS depending on

the analytes' sensitivity. Associations between POP concentrations in breast milk and potential determinants

were investigated using two-way contingency tables and multivariable generalized linear models.

Results: Fifteen of the 23 screened POPs were detected in the breast milk samples. Four organochlorine compounds

(p,p′-DDT, p,p′-DDE, HCB and β-HCH) and two brominated flame retardant congeners (BDE-47, BDE-

153) were detected at concentrations above the limit of quantification in>50% of the breast milk samples.

Maternal age and BMI were usually associated with higher POP concentrations. Rural residency and consumption

of home-produced eggs, fatty fish and fish oil supplements were associated with higher concentrations

of DDT and DDE. Consumption of fatty fish and being breastfed during childhood were associated with higher

concentrations of HCB and β-HCH. Fish oil supplements and home-produced eggs were associated with higher

concentrations of BDEs, but for BDE congeners exposure routes other than diet require further investigation.

Conclusions: Dietary and non-dietary determinants predict individual POP concentrations in breast milk.

VL - 131 ER -