空气－乙炔火焰原子吸收法测定饲料中微量铬的研究

The Determination of the Atomic Absorption of Air Acetylem Flame and the Study on a Small Amount of Chromium in Feed

研究了以ＳｒＣｌ２作抑制剂、ＮＨ４Ｃｌ作释放剂，用ＡＡＳ法测饲料中微量铬时，共存元素不干扰测定，样品回收率为９３．８％～１０１．０％，相对标准偏差为０．７８％

It is studied when a small amount of chromium in feed is measured with the method of AAS,coexistence elements and determined with SrCl 2 as a depressor and NH 4Cl as a releasing agent.As a result,the rate of sample reclamation is 93.8%～101.0% and the relative standard deviation is 0.78%.