Abstract：A method for the determination of trace aluminum, molybdenum, vanadium, titanium and niobium in silicon steel by inductively coupled plasma mass spectrometry (ICP MS) was described A series of single parameter condition experiment was conducted The optimized operation parameters with RF power 1 400 W, turbo pump rate 30 rpm, sampling depth 140 and nebulizer pressure 090 were obtained The samples were dissolved by HNO 3 , and the Be and Y mixing internal standard were used to eliminate the signal drift caused by high matrix concentration The spectral interferences for all these five elements was also investigated in detail, and the isotopes 27 Al, 98 Mo, 51 V, 47 Ti and 93 Nb were used for measurement The yield of double charge ions and oxide ions were minimized by adjusting instrumental parameters to reduce the mass spectrum interferences At last, the matrix matched standard solution and the addition method were used to build the calibration curves, and the blank values originated from the reagents were determined and subtracted from the results The experiment results indicated that for all these five object elements, the LOD of this proposed method were less than 1 μg/g The method was applied to the determination of some silicon steel CRMs, the results were proved be in good agreement with the certified value, and the RSD for every elements were smaller than 52%
李 杰, 李 洁, 张穗忠，于录军. 电感耦合等离子体质谱法测定硅钢中痕量铝钼钒钛铌[J]. 冶金分析, 2013, 33(1): 22-26.
LI Jie, LI Jie, ZHANG Sui zhong, YU Lu jun. Determination of trace aluminum, molybdenum, vanadium,titanium and niobium in silicon steel by inductively coupled plasma mass spectrometry. , 2013, 33(1): 22-26.
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