【摘要】 本文采用自制仪器对鲁米诺-氰化钾-铜（Ⅱ）化学发光体系进行了系统研究,选定了测铜的最佳条件。该体系以铜（Ⅱ）作为氧化剂直接氧化鲁米诺产生λ_max为425nm的闪烁化学发光。测铜的线性范围为2×10^-10—6×10^-7/ml,检测下限为9×10^-l2g/ml,对10^-10g/ml铜（Ⅱ）测定的变异系数为4.6％。采用焦磷酸钠作为掩蔽剂可消除常见共存离子的干扰。此法用于水及人体全血中痕量铜的测定,结果均比较满意。更多还原

【Abstract】 A chemiluminescent method has been proposed for the determination of trace copper in water and human blood. The optimum conditions of the chemiluminescent reaction in the system of luminolpotassium cyanide-copper（Ⅱ）have been investigated systematically withself-made instrument. The linear range of the calibration curves is obtained from 2×10^-10 to 6×10^-7g/ml Cu（Ⅱ）, The detection limit is 9×10^-12g/ml, the relative standard deviation is 4.6% for determination of 10^-10g/ml Cu（Ⅱ）. The interference behaviour of 34 foreign ions have been examined. The interference from Fe（Ⅲ）, Sn（Ⅳ）, Ni（Ⅱ）, Co（Ⅱ）, etc, can be eliminated effectively with sodium pyrophosphate as a masking agent.更多还原