SPECTROPHOTOMETRIC DETERMINATION OF TRACES OF NICKEL WITH 4-ISOPROPYL-1,2- CYCLOHEXANEDIONEDIOXIME

Journal Article · Fri May 01 04:00:00 EDT 1959 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

OSTI ID:4267140

McDowell, B L; Meyer, Jr, A S; Feathers, Jr, R E; White, J C

The use of xylene rather than chloroform to extract the nickel(II)-4- isopropyl- l,2-cyclohexanedionedioxime chelate results in increased sensitivity in the spectrophotometrie determination of nickel. The extraction coefficient in xylene is more than five times as great as that in chloroform, and the low solubility of xylene in aqueous solution permits the use of much larger phase ratios (aqueous to organic). The system eonforms to Beer's law for concentrations of nickel from 1 to 12 of nickel per ml. of xylene. The precision of the method is 2%. Iron, cobalt, and copper interfere seriously; however, their interference can be minimized so that weight ratios of metal to nickel of 20, 2, and 8, respectively, can be tolerated. Concentrations of nickel from 0.005 to l00 ppm were determined in water, alkali metals, and several analytical reagents. Recoveries in excess of 95% were obtained when known amounts of nickel were extracted from aqueous solutions of relatively high ionic strength at aqueous-to-organic volume ratios as high as 300 to 1. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• NSA Number: NSA-13-013262
• OSTI ID: 4267140
• Journal Information: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 31; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKALI METALS
CHEMICALS
CHEMISTRY
CHLORINATED HYDROCARBONS
CHLOROFORM
COBALT
COPPER
CYCLOALKANES
ERRORS
HEXANE
IRON
NICKEL
NICKEL COMPLEXES
ORGANIC COMPOUNDS
OXIMES
PHOTOMETRY
PROPYL RADICALS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SOLUBILITY
SOLUTIONS
SPECTROSCOPY
TRACE AMOUNTS
USES
WATER
XYLENE