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Determination of urinary manganese by the direct chelation-extraction method and flameless atomic absorption spectrophotometry.
  1. T Watanabe,
  2. R Tokunaga,
  3. T Iwahana,
  4. M Tati,
  5. M Ikeda


    The direct chelation-extraction method, originally developed by Hessel (1968) for blood lead analysis, has been successfully applied to urinalysis for manganese. The analyses of 35 urine samples containing up to 100 microgram/1 of manganese from manganese-exposed workers showed that the data obtained by this method agree well with those by wet digestion-flame atomic absorption spectrophotometry and also by flameless atomic absorption spectrophotometry.

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