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锑的测定曾有不少报导,目前以碘化钾和孔雀绿比色法应用较多,在实践中我们认为前者灵敏度较低,重现性差,后者灵敏度虽高,但孔雀绿本身的颜色较深,比色时,克分子吸光系数较高,往往因此而造成误差,而且需萃取,操作烦琐,也不太理想。根据我厂铸造铝合金ZL11的锑的加入量为0.2～0.3%,我们改用883型笔录式极谱仪测定锑的含量,本方法是以NaOH溶解试样,在8N-HC1底液中扫描,由于HC1
Determination of antimony, there have been many reports, the current potassium iodide and malachite green colorimetric method is more, in practice, we think the former low sensitivity, poor reproducibility, the latter the sensitivity is high, but the color of malachite green itself , Colorimetric, higher molecular extinction coefficient, often resulting in error, and the need for extraction, cumbersome operation, nor is it ideal. According to my factory casting aluminum alloy ZL11 antimony added amount of 0.2 ~ 0.3%, we use the 883-type recording polarographic instrument for the determination of antimony content, the method is based on the dissolution of NaOH samples, 8N-HC1 scan the bottom liquid Due to HC1