高倍稀释熔融制样X射线荧光光谱测定钨砂和铬铁矿中主含量  

Determination of WO_3 in Wolfram Ore and Cr_2O_3 in Chromite by XRF with High-Dilution Fusion Sample Preparation

作　　者：吴秀兰 朱明达 张志峰 王伊琴 

机构地区：[1]二连浩特检验检疫局技术中心,内蒙古二连浩特011100

出　　处：《岩矿测试》2004年第1期73-74,共2页Rock and Mineral Analysis

摘　　要：用X射线荧光光谱测定钨砂中WO3和铬铁矿中Cr2O3,通过高倍稀释熔融玻璃片制样法,采用高纯WO3或Cr2O3作单一标准样测量X射线荧光强度计数,然后同未知样品测量所得X射线荧光强度计数相比,即可计算出WO3和Cr2O3的测量值。方法用于钨砂矿和铬铁矿中WO3和Cr2O3的测定,结果与标准值相符。A method for the determination of WO_(3) in wolfram ore and Cr_(2)O_(3) in chromite by XRF with sample preparation of high-dilution fusion glass-disc was developed. Lithium metaborate was used as flux with a flux-sample ratio of 80～100∶1. High purity WO_(3) and Cr_(2)O_(3) were used as calibration standards. The method has been applied to the determination of WO_(3) in wolfram ore and Cr_(2)O_(3) in chromite with satisfactory results.

关 键 词：钨砂矿 铬铁矿 熔融 X射线荧光光谱 

分 类 号：O657.34[理学—分析化学] P618.3[理学—化学]