Selective spectrophotometric determination of trace amounts of molybdenum with 2,2′-dihydroxybenzophenone thiosemicarbazone
ANALYSTANALYST Pub Date: DOI: 10.1039/AN9780301210
Abstract
2,2′-Dihydroxybenzophenone thiosemicarbazone reacts with molybdenum in solutions in mineral acids in the presence of tin(II) chloride to produce a red 1 : 1 complex (λmax.= 500 nm, ?μ= 3.3 × 103 l mol–1 cm–1). This complex is used for the spectrophotometric determination of trace amounts of molybdenum. The interferences of many metallic ions have been examined and a procedure for the determination of molybdenum in synthetic mixtures is proposed. Interfering metals can be removed by a preliminary extraction with dithizone.
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CAS no.: 89640-58-4
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