Changes over time in persistent organic pollutants (POP) concentrations in human milk in the Republic of Moldova
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2018-10-04 17:35
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TÎRSINA, Alla, SYRKU, Raisa, PYNZARU, Iu., BAHNAREL, Ion. Changes over time in persistent organic pollutants (POP) concentrations in human milk in the Republic of Moldova. In: Toxicological and Environmental Chemistry, 2017, nr. 5-6(99), pp. 1007-1019. ISSN 0277-2248. DOI: https://doi.org/10.1080/02772248.2017.1287469
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Toxicological and Environmental Chemistry
Numărul 5-6(99) / 2017 / ISSN 0277-2248

Changes over time in persistent organic pollutants (POP) concentrations in human milk in the Republic of Moldova

DOI:https://doi.org/10.1080/02772248.2017.1287469

Pag. 1007-1019

Tîrsina Alla12, Syrku Raisa1, Pynzaru Iu.1, Bahnarel Ion1
 
1 National Center of Public Health,
2 Necunoscută, Portugalia
 
 
Disponibil în IBN: 16 februarie 2018


Rezumat

Persistent organic pollutants (POP) in human milk originating from various sources are used as environmental exposure markers. Further, mothersmilk is a predominant pathway for human exposure for suckling infants to POP. The aim of present study was to provide baseline and time trend information on human milk POP concentrations in the Republic of Moldova. A pooled sample of breast milk was analyzed in 2009 and 2015 and health risk evaluated by comparing reference values of humans' daily intake with estimated daily intake (EDI). Results showed decreases for concentrations of dichlorodiphenyltrichloroethane, hexachlorobenzene, dieldrin, heptachlor, α and β-hexachlorocyclohexane, polychlorinated biphenyls, dioxin-like polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins and dibenzofurans between sampling periods. Regardless of the decrease, EDI was higher than reference values for dioxins toxic equivalents, polychlorinated biphenyls and β-hexachlorocyclohexane in both phases. However, increased levels were detected for polybrominated diphenyl ethers (twofold) and hexabromocyclododecane (threefold) from 2009 to 2015, but the EDI in both phases is much lower than the reference. The decline in certain POP levels may be attributed to coordinated efforts undertaken by national and international entities to regulate these compounds. The basis for the elevated levels of polybrominated diphenyl ethers and hexabromocyclododecane remains unknown but raises concerns regarding lactational exposure.

Cuvinte-cheie
estimated daily intake, persistent organic pollutants,

human exposure, human milk, Republic of Moldova risk analysis, time trends