Pyridine ketoximes as analytical reagents. XVIII

Beaupr, P. W.; Holland, W. J.

doi:10.1007/bf01196414

Cited by 6 publications

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“…ion by an indirect method (191), 8-amino-7-(2-aminophenylazo)-!,6-naphthalene disulfonic acid for cobalt (256), Aluminophthalexon and Aluminophthalexon A for chromium(III) (409), and 3-N-salicylideneamino-4-hydroxybenzenesulfonic acid (652) and 8,8'-diquinolyldisulfide and its derivatives (559) for copper. Other new reagents were Ar/-hydroxy-Ar',Ar"-diphenyl-p-toluamidine and thiocyanate for iron(III) (431), l-phenyl-2,3-dimethyl-5-pyrazolonylazopyrogallol for gallium (170), 2,3,4-trihydroxy-4-sulfoazobenzene for molybdenum(VI) (171), and 2-pyridyl-2-thienyl Z-ketoxime for palladium (51) and platinum (53). Also reported as new reagents were Ar-phenyl-Ar'-(a-pyridyl)thiourea for rhodium (607), mephazine hydrochloride for ruthenium(III) (187), '-furoylphenylhydroxylamine and 1,8-dihydroxynaphthalene for titanium (149), and 2-[2-(5-chloropyridyl)azo]-5-dimethylaminophenol for zinc (166).…”

Section: Chemistrymentioning

confidence: 99%

Ultraviolet and light absorption spectrometry

Hargis¹,

Howell²

1980

Anal. Chem.

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Section: Chemistrymentioning

confidence: 99%

Ultraviolet and light absorption spectrometry

Hargis¹,

Howell²

1980

Anal. Chem.

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“…This solution was further diluted to give a working solution containing 4 This solution was further diluted to give a working solution containing 4 …”

mentioning

confidence: 99%

Pyridine ketoximes as analytical reagents. XXII

Beaupr

Holland

1983

Mikrochim Acta

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This communication forms part of a continued investigation into the analytical applications of the organic chelating reagent 2-pyridyl-2-thienyl-Z-ketoxime (PTK). This reagent has previously been used for the determination of trace amounts of cobalt 1-3, palladium 4, 5, platinum 6, 7, and gold s.Previously, a method was described for the determination of trace amounts of palladium in a sulfide concentrate 5. The procedure has the advantages of speed, small sample size and no necessity to preconcentrate the palladium by fire assay.In the present work, this method has been modified for the determination of palladium in a standard reference nickel-copper matte. ExperimentalApparatus A Beckman DB spectrophotometer and matched 4-cm quartz cells were used for all spectrophotometric measurements.Reagents 2-Pyridyl-2-thienyl-Z-ketoxime. The synthesis of this reagent has been previously described 1.Reagent solution. A 1% w/v solution in 95% ethanol was used. Standard palladium(II) solution. A standard stock solution was prepared by dissolving palladium wire (Alfa Ventron, 99.99%) in aqua regia, boil-18"

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