Impulse-infrared Absorption Method for Determination of Oxygen Content in Rare Earth Ferro-alloy
In this paper,a method of determination of oxygen content in rare earth ferro-alloys by inert gas pulse-infrared absorption was established.The effects of flux,sample preparation method,heating power and other conditions on the determi-nation results were investigated.The results showed the sample was prepared with particles nickel basket as the flux and analy-sis power was 5000 W.Under optimized conditions,the detection limit of the method was 0.0014％,the relative standard de-viation(RSD)of the actual sample was 1.80％to 4.46％(n=11),and the recoveries were 92.3％～115.5％.The method has the advantages of simple and fast operation,good precision,accurate and reliable results,it has certain practical applica-tion value.
NETL
NSTL
万方数据
