E. Kavlentis
1988
Citations
0
Influential Citations
1
Citations
Journal
Analytica Chimica Acta
Abstract
3,4-Dihydroxybenzaldehyde 4-nitrophenylhydrazone reacts with iron(III) to form a red complex extractable into methyl isobutyl ketone. Sulphide, fluoride and phosphate inhibit the formation of the complex. Sulphide and fluoride are masked with Cu(II) and Al(III), respectively. These properties are used to determine sulphide (0.15–4 mg l−1), fluoride (0.3–9 mg l−1) and phosphate (0.3–8 mg l−1) in mixtures by spectrophotometry or atomic absorption spectrometry.