Sensitive spectrophotometric determination of nickel(II) with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol.
作者： W Fu-Sheng
DOI: 10.1016/0039-9140(81)80011-2
关键词: Absorption (chemistry) 、 Chemistry 、 Highly sensitive 、 Nickel 、 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol 、 Inorganic chemistry 、 Electroplating 、 Aluminium 、 Molar absorptivity
摘要: Abstract A simple, selective and highly sensitive procedure for spectrophotometric determination of nickel has been developed. At pH 5.5, reacts with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol in water—ethanol medium to form a red-violet complex which two absorption maxima, at 520 56Onm. The molar absorptivity 56Onm is 1.26 × 10 5 l.mole −1 .cm . Beer's law obeyed 0–15 μg nickel. Nickel aluminium alloys electroplating waste-water determined by this method.
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