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Extraction Of Copper Aluminum And Iron

To extraction flasks containing 2 mg of aluminum, o mg of iron and eitlier 170 mg of copper or 157 mg of nickel, 1.10 g of picolinic acid was added. Analysts o f a nickel-copper alloy A r.4uo-g sample of National Bureau of Standards alloy, iu2A, was placed in a loo-ml beaker and dissolved in 10 ml of liot concentrated perchloric acid.

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