Title: Spectrophotometric determination of micro nickel in hot-dipping zinc alloys with o-carboxyl-phenyl diazoamino azobenzene
Abstract: A high sensitive and selective spectrophotometric method for the determination of trace nickel in zinc alloy has been developed.In the boric acid buffer solution(pH=10), nickel with a new chromogenic reagent o-carboxyl-phenyl diazoamino azobenzene forms a brick red stable complex which shows maximum absorption wavelength at 542 nm with a molar absorptivity of 1.24×10~5 L·mol~(-1)·cm~(-1).Beer's law is obeyed in the range of 0-6 μg/25 mL for nickel. RSD is 1.0% for the determination of 5 μg/25 mL nickel. This method is very sensitive,simple,and it has been used for the determination of nickel in hot-dipping zinc alloy with satisfactory results.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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