Spectrophotometric studies on complexation reactions of some water-soluble 5-nitro-2-pyridylhydrazones with cobalt. Spectrophotometric and derivative spectrophotometric determination of trace cobalt with 2-benzimidazolyl-3-sulphophenylmethanone 5-nitro-2-pyridylhydrazone
โ Scribed by Hajime Ishii; Tsugikatsu Odashima; Yoshiaki Kawamonzen
- Book ID
- 108304327
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 472 KB
- Volume
- 244
- Category
- Article
- ISSN
- 0003-2670
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Four new hydraxones, 2-pyridinecarbaldehyde 3-nitro-2pyridylhydraxone, 2pyridinecarbaldehyde 3,5-dinitro-2pyridylhydraxone (PA-3,5-NPH), 2-quinolinecarbaldehyde 5-nitro-Zpyridylhydrazone and (i-phenanthridinecarbaldehyde %nitro-2\_pyridylhydraxone, were synthesized. Their properties and reactivities
A flow-mJectlon spectrophotometrlc method IS presented for the determloatlon of traces of cobalt utdlzmg Its complex formatlon with 2-(5-bromo-2-pyndylao)-5-~N-propyl-N-sulphopropylam~no)an~l~ne (PSAA) Copper(H) enhances the rate of the slow complex formatlon reaction and this provides high sensltlv