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[Trace elements in the human placenta (author's transl)].

R Thieme, P Schramel, B J Klose

    Geburtshilfe Und Frauenheilkunde
    |May 1, 1975
    PubMed
    Summary

    Trace element analysis of human placentas reveals significant regional differences in Bavaria. Munich shows high antimony, bromine, lanthanum, and cobalt levels, likely due to urban pollution, while the Bavarian forest has elevated cerium and mercury.

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    Performance of two Picea abies (L.) Karst. stands at different stages of decline : VI. Nutrient concentration.

    Oecologia·2017

    Area of Science:

    • Environmental Science
    • Analytical Chemistry
    • Human Biology

    Context:

    • Human placentas serve as bioindicators for environmental exposure.
    • Regional variations in trace element concentrations can reflect localized pollution sources.
    • Bavaria presents diverse environmental conditions, from urban centers to natural landscapes.

    Purpose:

    • To quantify and compare trace element concentrations in human placentas from different regions of Bavaria.
    • To investigate potential correlations between geographic location and elemental composition of placental tissue.
    • To identify specific elements that are elevated in certain regions and explore possible causes.

    Summary:

    • Neutron activation analysis with radiochemical separation was used to determine trace elements in human placentas.

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  • Placentas from Munich exhibited higher concentrations of antimony (Sb), bromine (Br), lanthanum (La), and cobalt (Co), attributed to urban environmental pollution.
  • Placentas from the Bavarian forest showed increased levels of cerium (Ce), linked to local geology, and mercury (Hg), with an unexplained origin.

    • Impact:

    • Provides crucial data on regional trace element burdens in human placentas.
    • Highlights the impact of urban pollution on elemental accumulation in maternal-fetal tissues.
    • Identifies areas with potentially concerning environmental contaminants, such as mercury in the Bavarian forest, warranting further investigation.