Spectrophotometric determination of microamounts of gold(III) with propericiazine |
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| Authors: | H Sanke Gowda A Thimme Gowda N M Made Gowda |
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| Institution: | 1. Department of Post-Graduate Studies and Research in Chemistry, University of Mysore, Manasagangotri, Mysore-570 006, India;1. Division of Biochemistry, Department of Human Biological Chemistry and Genetics, The University of Texas Medical Branch, Galveston, Texas 77550 U.S.A. |
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| Abstract: | Propericiazine is proposed as a new reagent for the spectrophotometric determination of gold(III). The reagent forms an orange-red-colored species with gold(III) instantaneously in 4–8 M phosphoric acid. The orange-red species exhibits maximum absorbance at 511 nm. Beer's law is valid over the concentration range 0.1–7.0 μg/ml. The molar absorptivity is found to be 3.85 × 104 liter mol−1 cm−1. The effects of acidity, time, order of addition of reagents, temperature, reagent concentration, and diverse ions are investigated. |
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| Keywords: | To whom correspondence should be addressed |
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