从1970年生产球墨铸铁开始,我们就开展了测定球铁中镁的工作。从最早的用氢氧化钠分离,EPTA滴定测镁,到目前广泛使用的不经分离,用偶氮氯膦Ⅰ直接发色测镁,尽管分析时间从原来的几小时缩短到1小时,但始终感到化学分析法不能满足炉前快速测镁的要求。于是考虑借助看谱来解决这一问题。从1980年开始,经过一段时间的摸 From the 1970 production of ductile iron, we have carried out the determination of magnesium in ductile iron work. From the earliest sodium hydroxide separation, EPTA titration of magnesium, to the present widely used without separation, with chlorophosphorus I direct colorimetric magnesium, although the analysis time from the original few hours to 1 hour, but always Feel chemical analysis method can not meet the requirements of rapid determination of magnesium furnace. So consider looking at the spectrum to solve this problem. Since 1980, after a period of touch