Water-Soluble 1,2-Dioximes as Analytical Reagents

4-Methyl- and 4-Isopropyl-1,2-Cyclohexanedionedioxime. Gravimetric Reagents for Nickel and Palladium

“…The factor for nickel in bis(4-methvll,2-cyclohexanedionedioximato-Ar,AT,)mckel(II) [(CLHnOgNg^Ni] is 0.1590. 4-Isopropylnioxime. The optimum conditions for quantitatively precipitating nickel as bis(4-isopropyl-l,2-cyclohexanedionedioximato-AjA'lnickeKII) were found to be the same as those for 4-methylnioxime.…”

“…Chem. 21, 1400(1949. (8) Rosenmund, K. W., Kuhnheim, W., Rosenberg-Gruszynski, D., and Rosetti, ., Z. Untersuch.…”

Determination of Trace Amounts of Copper and Lead by Tungsten Metal Furnace Atomic Absorption Spectrometry after Preconcentration with Activated Carbon Impregnated with 1,2-Cyclohexanediondioxime

“…6,7 However, there have been no reports concerning the determination of other metals, such as copper and lead, and for the composition of these metals-Dox complexes. The present authors have reported a method for the determination of nickel 8 , palladium 9 and cobalt 10,11 by tungsten metal furnace atomic absorption spectrometry after preconcentration using activated carbon impregnated with 1,2-cyclohexanediondioxime (AC-Dox).…”

Nickel-63 in Marine and Terrestrial Biota, Soil, and Sediment

“…Before dissolution of the samples in concentrated nitric and perchloric acids, 6 mg of stable nickel were added to each sample to serve as both a carrier and a yield determinant. Nickel was concentrated from the digest by precipitation of nickel 1,2-cycloheptanedione dioxime from acid solution (5). The precipitate was collected by filtration, removed from the filter by dissolution in 8M HNO3, and oxidized with perchloric acid to destroy the organic matter; the nickel was concentrated again by a second precipitation with heptoxime.…”