水中微量镉的测定,目前多采用双硫腙比色法和原子吸收分光光度法。前者灵敏度较低,而且操做繁琐,还要接触使用剧毒物氰化钾,因此多数单位不愿采用。后者价格昂贵,尤其是对含量极微的饮用水,常常需要经巯基棉富集或其它方法处理后才能测定,也不十分理想。因此我们试用溶出分析法对水中微量镉进行了探讨性测定,发现本法灵敏度高、简 Determination of trace cadmium in water, the current use of dithizone colorimetry and atomic absorption spectrophotometry. The former is less sensitive, and cumbersome operation, but also contact the use of highly toxic potassium cyanide, so most units do not want to use. The latter are expensive, especially for very low levels of drinking water, which often need to be measured and not very desirable after being treated with thiamin-enriched or other methods. Therefore, we try to test the dissolution of water in the determination of trace cadmium and found that the method of high sensitivity, Jane