Indirect spectrofluorimetric kinetic determination of palladium and nickel based on the oxidation of 2,2′-dipyridylketone hydrazone and dipyridylglyoxal hydrazone

✍ Scribed by F. Grases; C. Genestar

• Book ID: 104100312
• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 390 KB
• Volume: 161
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)85807-9

✦ Synopsis

Kinetic methods for palladium (0.1-0.8 mg l-') and nickel (0.1-0.7 mg 1-l) are based, respectively, on the uncatalyzed bromate oxidation of 2,2'-dipyridylketone hydrazone (DPKH) in acidic media and of dipyridylglyoxal hydrazone (DPDKH) in basic media, to yield fluorescent products. Complexation of DPKH and DPDKH by Pd(I1) and Ni(II), respectively, causes a decrease in ligand concentration and thus in reaction rate, which can be related to the concentration of metal. The method for palladium is relatively free from interferences.