Ying Xiao-hu, Wang Qian, Cao Guo-zhou, Yu Ming-fang
Ningbo Entry-Exit Inspection and Quarantine Administration, Ningbo 315012, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2004 Dec;24(12):1681-3.
X-ray fluorescence analysis software Spectra Plus was used to calculate theoretical alpha influence coefficents of other elements to Cr in seven stainless steel standard samples, theoretical alpha influence coefficients of elements, by which Cr signal was enhanced, varied largely with the change of elements content. Variable theoretical alpha influence coefficients, which varied with elements content, were used to correct the matrix effects in stainless steel, the secondary excitation of Cr by other elements were corrected, and Cr (0.3%-20.8%) in stainless steel and low alloy steel could be analysed in accordance with one calibration curve. The matrix effects in samples can be corrected by variable theoretical alpha influence coefficients, so the measurable content range of calibration curve was enlarged. The contents of fifteen elements Al, Si, P, S, Ti, Cr, Mn, Co, Ni, Cu, As, Mo, Sn, W and Pb in stainless steel were measured by X-ray fluorescence spectrometer, variable theoretical alpha influence coefficients were used to correct the matrix effects, and the analysis results are comparable to those obtained by wet chemical method.
采用X射线荧光分析软件Spectra Plus计算了7个不锈钢标准样品中其他元素对Cr的理论α影响系数，增强Cr信号的元素的理论α影响系数随元素含量的变化有很大差异。采用随元素含量变化的可变理论α影响系数对不锈钢中的基体效应进行校正，校正了其他元素对Cr的二次激发，可根据一条校准曲线分析不锈钢和低合金钢中0.3%-20.8%的Cr。可变理论α影响系数可校正样品中的基体效应，从而扩大了校准曲线的可测量含量范围。用X射线荧光光谱仪测定了不锈钢中Al、Si、P、S、Ti、Cr、Mn、Co、Ni、Cu、As、Mo、Sn、W和Pb 15种元素的含量，采用可变理论α影响系数校正基体效应，分析结果与湿化学法相当。
