合金中微量锆的测定,采用较多的是偶氮胂Ⅲ光度法。对于较复杂合金,一般需要分离复杂的共存元素后测定。流程长、操作繁杂,难以满足生产的要求。有资料介绍萃取光度法。我们研究了微量锆在异戊醇介质中与偶氮氯膦Ⅲ的显色反应。采用萃取光度法,可大大提高锆的灵敏度及选择性。用此方法测 Determination of trace zirconium alloy, the use of more arsenazo Ⅲ luminosity method. For more complex alloys, generally require the separation of complex co-existing elements after the determination. Long process, complex operation, it is difficult to meet the production requirements. Information on extraction spectrophotometry. We studied the chromogenic reaction of trace zirconium with chlorophosphonazo III in isopentanol. Using extraction spectrophotometry, can greatly improve the sensitivity and selectivity of zirconium. Measured with this method