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光度分析中使用的显色剂,除必需具有灵敏度高和选择性好等基本特点外,无毒害和使用方便则是其实际应用和推广普及的主要条件。迄今,许多显色剂虽具有较高的灵敏度和良好的选择性,但由于试剂本身或其反应产物(如其金属螯合物)不溶于水,需要用有机溶剂进行萃取后,再取有机相作光度测定。为此,我们设想,若将已知的灵敏度高和选择性好的有机显色剂,在保持其分
In addition to the basic characteristics of high sensitivity and good selectivity, the developer used in photometric analysis is non-toxic and easy to use, which is the main condition for its practical application and popularization. So far, although many of the developers have high sensitivity and good selectivity, since the reagent itself or its reaction product (such as its metal chelate) is insoluble in water, it needs to be extracted with an organic solvent and then the organic phase Photometry. To this end, we envisage that if the known high sensitivity and good selectivity of the organic developer, while maintaining its points