一、前言分光光度分析是比较普及而简便的仪器分析方法,对于单组分已有许多成熟的测定方法,但是对于多组分分析,由于显色剂、反应条件、干扰情况和数据处理等因素,不经分离而同时测定的分光光度方法为数还不多。铜、镍、铁常常共存于许多试样之中,如电镀液、工业废水、合金等。对于这三元素的个别测定已有许多方法,但由于它们与同一显色剂生成的有色物质最大吸收峰往往接近或严重重叠,而引起相互间的干扰,为此过去常从化学处理角度考虑,采用预先分离或溶 I. Introduction Spectrophotometric analysis is a more universal and simple instrument analysis method. There are many mature measurement methods for single components. However, for multi-component analysis, due to factors such as developer, reaction conditions, interference and data processing , The number of spectrophotometric methods that are determined simultaneously without isolation is not significant. Copper, nickel, iron often co-exist in many samples, such as electroplating solution, industrial wastewater, alloys and so on. There are many methods for the individual determination of these three elements. However, since the maximum absorption peaks of the colored materials generated by the same color developing agent often approach or seriously overlap with each other, causing interference with each other, for the past, from the chemical treatment point of view, Using pre-separation or dissolution