Transfer of mercury and phenol derivatives across the placenta of Baltic grey seals (Halichoerus grypus grypus)

Iga Nehring , Agnieszka Grajewska , Lucyna Falkowska , Marta Staniszewska , Iwona Pawliczka Vel Pawlik , Dominika Saniewska


The placenta is an intermediary organ between the female and the developing foetus. Some chemical substances, including the most harmful ones, exhibit the ability to accumulate in or penetrate through the placenta. The aim of the study was to determine the role of the placenta of the Baltic grey seal (Halichoerus grypus grypus) in the transfer of endocrine disrupting compounds (EDCs) - (bisphenol A, 4-tert- octylphenol, 4- nonylphenol), as well as total and organic mercury. 30 placentas were collected from grey seals pupping under human care at the Hel Marine Station in the years 2007-2016. The assays were conducted using the technique of high-preformance liquid chromatography (phenol derivatives) and atomic absorption spectrometry (mercury and selenium). A measurable level of EDCs was indicated in the placentas of grey seals. It was established that the inorganic Hg form was accumulated in the placenta, and that its concentrations were an order of magnitude higher than the concentrations of the organic form, which penetrated to the foetus. Similar observations were made for phenol derivatives - bisphenol A, 4-tert- octylphenol and 4-nonylphenol. For this compound group the placenta was a barrier, but the properties of phenol derivatives suggest the possibility of their penetration through this organ.
Author Iga Nehring (FOG / IO / DMChEP)
Iga Nehring,,
- Division of Marine Chemistry and Environmental Protection
, Agnieszka Grajewska (FOG / IO / DMChEP)
Agnieszka Grajewska,,
- Division of Marine Chemistry and Environmental Protection
, Lucyna Falkowska (FOG / IO / DMChEP)
Lucyna Falkowska,,
- Division of Marine Chemistry and Environmental Protection
, Marta Staniszewska (FOG / IO / DMChEP)
Marta Staniszewska,,
- Division of Marine Chemistry and Environmental Protection
, Iwona Pawliczka Vel Pawlik (FOG / IO / HMS)
Iwona Pawliczka Vel Pawlik,,
- Hel Marine Station
, Dominika Saniewska (FOG / IO / DMChEP)
Dominika Saniewska,,
- Division of Marine Chemistry and Environmental Protection
Journal seriesEnvironmental Pollution, ISSN 0269-7491, (A 40 pkt)
Issue year2017
Publication size in sheets0.5
Keywords in EnglishGrey seal, maternal transfer, organic mercury, phenol derivatives, placenta, selenium
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 5.099 (2) - 2016=5.552 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.