The Determination of Trace Amount of Copper �� by Catalytic Flow Injection Spectrophotometric Method

Abstract In the medium of sodium teiraborate-sodium hydroxide buffer,the flow inje-ction aanlysis for determination of trace amount of Cu(��) based on the catalytic action of Cu(��) on the oxidation of acid black 10B with hydrogen peroxide has been established.The linear range of determination is 0��50ng/mL and 50��300ng /mL Cu(��).The limit of detection is 3ng/mL.The relative standard deviation is 1.62%(n=10).30 samples could be injected pen hour.This method was succes-sfully applied to the determination of Cu(��) contained in iron ore and aluminum alloy.

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Keywords�� copper determination;;acid black 10B;;flow injection analysis;;catalyticy spectrophotometr

Received 1993-07-15; published 1993-07-15

Cite this article:

Xiao Xinliang Liu Xiangyang Liu Ruixian .The Determination of Trace Amount of Copper �� by Catalytic Flow Injection Spectrophotometric Method[J] Chemcial Industry and Engineering, 1993,V10(3): 13-18