采用无水四硼酸锂熔剂熔融法制样,波长色散X射线荧光光谱法测定了锌精矿中的Zn、Pb、Fe、Cu、SiO2、As和Cd等7个主次量成分.采用低温硝酸锂预氧化处理,解决了锌精矿样品对铂黄金坩埚的腐蚀问题.以8个锌精矿标准样品建立校准曲线,用理论α系数法校正基体效应.测定锌精矿样品各成分的相对标准偏差(RSD,n=11)在0.20％～6.8％之间.用标准物质和实际样品验证,测定结果与标准物质认定值和实际样品化学方法测定值相符.%The samples were prepared by fusion method using anhydrous lithium tetraborate as flux. Seven components (including Zn. Pb, Fe, Cu, SiO2, As and Cd) in zinc concentrates were determined by wavelength dispersive X-ray fluorescence spectrometry. Low temperature preoxidation treatment was carried out with LiNO3,and thus the corrosion problem of platinum-gold alloy crucible was resolved. Calibration curve was established by eight zinc concentrates standard materials. The matrix effect was corrected by the theoretical alpha coefficients. The relative standard deviations (RSD, n= 11) of all the components determined in zinc concentrates were between 0. 20 % and 6. 8 %. The method has been applied to the determination of these components in standard materials and practical samples, and the analytical results were in good agreement with certified values of standard materials and values found of practical samples by chemical methods.
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