Abstract
A method has been developed for the microdetermination of nickel after coprecipitation of its morpholine-4-carbodithioate on microcrystalline naphthalene and subsequent dissolution in chloroform. Molar absorptivity and Sandell's sensitivity at 390 nm are calculated to be 6.1×103 dm3 mol-1 cm-1 and 0.0096 μg/cm2 respectively. Beer's law is obeyed over the range of 5-70, μg of nickel. Thirty μg of nickel in 10 ml of final solution gives a mean absorbance of 0.312 with a standard deviation of 0.0022(relative standard deviation of 0.7%). The method has been applied to the determination of nickel in some alloys.
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