Rapid spectrophotometric determination of chromium(III) with 1-(2-thiazolylazo)-2-naphthol in presence of surfactant.

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概要

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• Chromium(III) reacts with 1-(2-thiazolylazo)-2-naphthol at 80–95°C in acid media (pH 5.7), in presence of benzoate and sodium dodecyl sulfate. Presence of surfactant increases sensitivity of the complex and reduces heating time to 5 min, thus giving rise to perhaps the most rapid method for absorptiometric determination of chromium(III). The 1:1 complex obeys Beer's law for 0.2 to 2.4 μg of Cr(III) per ml, has molar absorptivity and Sandell sensitivity of 1.46×10<SUP>4</SUP> dm<SUP>3</SUP>mol<SUP>−1</SUP>cm<SUP>−1</SUP> and 3.5 ng cm<SUP>−2</SUP> respectively, at 575 nm.

• 公益社団法人 日本化学会の論文

著者

• Eshwar Muppalla

  Department of Chemistry, Indian Institute of Technology

• Rathaiah Gogineni

  Department of Chemistry, Indian Institute of Technology

関連論文

• Rapid spectrophotometric determination of chromium(III) with 1-(2-thiazolylazo)-2-naphthol in presence of surfactant.

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