��ע��߻��ȷ��ⶨ��ͭ��о��Ժ�10B-H_2O

ժҪ ��о��Na_2B_4O_7-NaOH ��,ͭ(��)�߻��Ժ�10B�µ��ɫ��Ӧ,��ע�似��,��˲ⶨ��ͭ��ע��߻��ⶨ Cu(��)��Է�ΧΪ0��50ng/mL ��50��300mg/mL,��Ϊ3ng/mL,��Ƶ�ʴ�30��/h��50ng/mL ͭ�ⶨ��Ա�׼ƫ��Ϊ1.62%(n=10)��Ӧ��ʯ��Ͻ��к��ͭ�Ĳⶨ,��Ľ��

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�ؼ���� ͭ�ⶨ �� Ժ�10B ��ע�� ͭ�ⶨ �� Ժ�10B ��ע��

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.

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

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

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Ф��;��;��;.��ע��߻��ȷ��ⶨ��ͭ��о��Ժ�10B-H_2O_2-Cu(��)��ϵ[J]. ��ѧ��ҵ�빤��, 1993,10(3): 13-18

Xiao Xinliang Liu Xiangyang Liu Ruixian .The Determination of Trace Amount of Copper �� by Catalytic Flow Injection Spectrophotometric Method[J]. Chemcial Industry and Engineering, 1993,10(3): 13-18