ICP-AES有机进样法测定燃料油中铝、硅、钙、钒、铁、镍含量

Determination of Al,Si,Ca,V,Fe,Ni elements in residual oil by organic direct injection ICP-AES

采用ICP-AES有机进样法测定燃料油中铝、硅、钙、钒、铁、镍元素。采用航空煤油为稀释剂,按照油/溶剂(质量比)1/9加以稀释后直接进入ICP-AES(电感耦合等离子体发射光谱)仪器测定。方法检出限:钒为0.5μg/g,硅为1μg/g,铝、镍为0.2μg/g,铁、钙为0.05μg/g;相对标准偏差<5%;回收率在88.4%～109.8%之间;与无机灰化-碱熔法(IP 501/05)测定的结果进行了比对,结果基本一致。

Abstract： An organic direct injection inductively coupled plasma method was established for the analysis of A1, Si, Ca, V,Fe,Ni elements in residual oil. Aviation kerosene as dilu- ent,the sample was diluted according to oiL/diluent （mass proportion） 1/9, and determined by ICP-AES. The detection limits of V was 0. 5μg/g,A1 and Ni were 0.2 μg/g,Si was 1 μg/g,Fe and Ca were 0. 05 μg/g. The repeatability of the method were less than 5%. The values of recovery were in the ranges of 88.4% - 109. 8%. The results of both the direct in- jection method and ashing-fusion method （ IP 501/05 ） were near the same.