A solvent-extraction absorptiometric method for determining nickel in boiler feed-water

Abstract

A method has been developed for determining nickel in boiler feed-water. The nickel complex with furil α-dioxime is extracted into chloroform, and is then determined absorptiometrically. The criterion of detection was about 0·3 µg of nickel per litre, and the standard deviation of results varied from about 0·15 to 0·3 µg of nickel per litre in the range of concentrations 0 to 50 µg of nickel per litre; within this range, the calibration graph was linear. No appreciable interference was caused by other impurities likely to be present in feed-water, and a batch of ten samples could be analysed in about 2½ hours.