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Trace Analysis of Nickel by Extraction‐Atomic Absorption Spectrophotometry Determination of its Acenaphthenequinone Dioxime Complex in Molten Naphthalene
Author(s) -
Lin JennLin
Publication year - 1986
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198600028
Subject(s) - chemistry , nickel , reagent , naphthalene , atomic absorption spectroscopy , absorbance , trace amounts , spectrophotometry , extraction (chemistry) , aqueous solution , liquid–liquid extraction , solvent , inorganic chemistry , analytical chemistry (journal) , chromatography , organic chemistry , medicine , physics , alternative medicine , quantum mechanics , pathology
A procedure is described for the trace analysis of nickel using the liquid‐liquid extraction of nickel acenaphthenequinone dioxime complex with molten naphthalene followed by solid‐liquid separation. Nickel complex cannot be extracted into any non‐aqueous organic solvents, but can be quantitatively extracted into molten naphthalene. It is very stable at high temperature and is dissolved in the mixed solvent (HNO 3 ‐DMF). The absorbance of the solution was measured at 231.5 nm against a reagent blank. Beer's law is followed in the concentration range of 5–100 μ g of nickel in 10 ml of the final solution. The sensitivity for 1% absorption is 0.155 μ g/ml nickel. The relative standard deviation is 1.0% for ten replicate determinations of 60 μ g of nickel. The interference of various ions has been studied and the method has been applied to the determination of nickel in aluminium alloys.