X射线荧光光谱粉末压片法检测合金铸铁中13种成分

本文介绍了粉末压片制样-X射线荧光光谱法对合金铸铁中Si、P、Cu、S、Mn、As、Ti、Sn、V、Cr、Ni、Mo和Al的分析。采用样品低温退火的方式进行样品前处理，并在样品成型过程中于黏结剂层中滴加10 d按一定比例配制的松香与丙酮的混合溶液进行样品制备。选用15个国家级、部级标准物质及自制标准物质配制成标准系列绘制校准工作曲线；运用空白试样系数校正法对V、Cr、Mn 等各元素的谱线重叠进行校正，同时将理论α系数与经验系数相结合，有效的克服了铸铁中各元素谱线干扰与基体效应。本法测定结果与电感耦合等离子体发射光谱及火花发射光谱法分析结果一致。

Determination of thirteen components in cast iron by X-ray fluorescence spectrometry with power press method

This paper reported the method for the determination of Si, P, Cu, S, Mn, As, Ti, Sn, V, Cr, Ni, Mo and Al in cast iron by X-ray fluorescence (XRF) spectrometry with power pressed method. The sample was pretreated with low-temperature annealing method, and during the sample-molding process, ten drops of mixed solution with certain ratio of rosin and acetone in the adhesive layer. The method selected fifteen national/ministerial grade and self-made standard samples to prepare a standard series of sample for establishing the calibration curve. The blank sample coefficient correction method was employed for calibrating the interference resulted from the overlaps of spectrum lines. Theoretical alpha coefficient and empirical coefficient was combined to overcome the sample spectral interference and matrix effect. The results of the proposed method were consistent with those of inductively coupled plasma spectrometry and spark source optical emission spectrometry.