Selective spectrophotometric determination of nickel in hydrogenated greases, steels and solders by solvent extraction with 3-(4-methoxyphenyl)-2-mercaptopropenoic acid
- 1 January 1984
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 109 (5) , 605-609
- https://doi.org/10.1039/an9840900605
Abstract
The synthesis, characteristics and analytical applications of 3-(4-methoxyphenyl)-2-mercaptopropenoic acid (4MF2MP) are described. A highly sensitive, selective and rapid spectrophotometric method is described for the determination of trace amounts of nickel by 3-(4-methoxyphenyl)-2-mercaptopropenoic acid. This compound reacts instantaneously with Ni(II) in alkaline media to produce a yellow complex (1:2) soluble in water (λmax.= 400 nm, ε= 1.95 × 104 l mol–1 cm–1) that can be extracted quantitatively with isoamyl alcohol (λmax.= 410 nm, ε= 9.5 × 103 l mol–1 cm–1) and octanol (λmax.= 415 nm, ε= 1.9 × 104 l mol–1 cm–1). This method has been applied to the determination of nickel in hydrogenated greases, steels and solders. The results are compared with those obtained using dimethyl glyoxime.Keywords
This publication has 0 references indexed in Scilit: