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Determination of total phosphorus in detergents by atomic absorption spectroscopy

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Summary

A method is described for the determination of phosphorus in solid detergents. Nitric acid plus perchloric acid followed by treatment of the residue with hydrofluoric acid serves admirably to dissolve detergents in aqueous solutions. The phosphorus is determined by atomic absorption spectroscopy using a phosphorus hollow cathode tube. The method of additions is utilized to overcome matrix interference. The values obtained for phosphorus are in good agreement with a standard colorimetric method. No loss occurred by volatilization.

Zusammenfassung

Eine Methode zur Bestimmung von Phosphor in festen Detergenzien wurde beschrieben. Salpetersäure, Perchlorsäure und nachfolgende Behandlung des Rückstandes mit Flußsäure eignen sich hervorragend, um Detergenzien in wäßrige Lösung zu bringen. Der Phosphor wird durch Atomarabsorption bestimmt, wobei eine Phosphor-Hohlkathodenröhre verwendet wird. Durch Zusätze umgeht man Störungen seitens der Matrix. Die erhaltenen Resultate stimmen gut mit denen der kolorimetrischen Standardmethode überein. Durch Verflüchtigung entstehen keine Verluste.

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Authors and Affiliations

  1. Department of Chemistry, Herbert H. Lehman College of The City University of New York, 10468, Bronx, N. Y., USA

    Gloria C. Toralballa, Gerald I. Spielholtz & Ralph J. Steinberg

Authors
  1. Gloria C. Toralballa
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  2. Gerald I. Spielholtz
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  3. Ralph J. Steinberg
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Toralballa, G.C., Spielholtz, G.I. & Steinberg, R.J. Determination of total phosphorus in detergents by atomic absorption spectroscopy. Mikrochim Acta 60, 484–490 (1972). https://doi.org/10.1007/BF01217952

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  • DOI: https://doi.org/10.1007/BF01217952

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