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  Bestimmung von Spurenelementen in der Plazenta I. Mitt.: Spektralphotometrische Bestimmung des Kupfergehaltes von Humanplazenten. [Determination of microelements in placenta I. Commun.: spectrophotometric determination of copper content of human placentas (author's transl)].

  Riemschneider R, Martins AF.

  Geburtshilfe Frauenheilkd. 1978 May;38(5):371-5.

  The copper content of human placenta determined by means of the Bathocuproinemethod lies at 1,21 +/- 0,18 ppm in the fresh and 7,06 +/- 1,04 ppm in the dried material. Furthermore an improved generally applicable method for decomposition of biological materials that prevents the volatilization of trace elements is described.

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