Determination of hydroxamic acids by direct spectrophotometry of colored complex in acidic solution

Determination of hydroxamic acids by direct spectrophotometry of colored complex in acidic solution An improved spectrophotometry of hydroxamic acids was evaluated. A synthetic aromatic hydroxamic acid for flotation was directly determined without any extraction in the solution of appropriate acidity. The introduction of ethanol made the process more stable. The characteristic absorption peak of the soluble complex at the wavelength of 525 nm was sensitive to being detected. The relationship between the absorbance and the concentration was in accordance with Lambert–Beer’s law in the range 0–120 mg/L, with a related coefficient of 0.9997. Compared with other determinations, this method considerably reduces the period and manipulation under the precondition of accuracy, so that it could be an available determination for hydroxamic acids. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Determination of hydroxamic acids by direct spectrophotometry of colored complex in acidic solution

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Publisher
Springer Netherlands
Copyright
Copyright © 2010 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry ; Physical Chemistry ; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-010-0160-3
Publisher site
See Article on Publisher Site

Abstract

An improved spectrophotometry of hydroxamic acids was evaluated. A synthetic aromatic hydroxamic acid for flotation was directly determined without any extraction in the solution of appropriate acidity. The introduction of ethanol made the process more stable. The characteristic absorption peak of the soluble complex at the wavelength of 525 nm was sensitive to being detected. The relationship between the absorbance and the concentration was in accordance with Lambert–Beer’s law in the range 0–120 mg/L, with a related coefficient of 0.9997. Compared with other determinations, this method considerably reduces the period and manipulation under the precondition of accuracy, so that it could be an available determination for hydroxamic acids.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Aug 26, 2010

References

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