硅钙钡镁合金中钡钙镁的测定  

Determination of Barium, Calcium, Magnesium in Si-Ca-Ba-Mg Alloy

作　　者：沙艳梅[1] 赵学沛[1] 王明军[1] 何雪梅[1] 

机构地区：[1]河南省地质矿产勘查开发局第一地质勘查院测试中心,河南南阳473000

出　　处：《岩矿测试》2004年第4期308-310,共3页Rock and Mineral Analysis

摘　　要：采用HNO3-HF-HClO4分解试样,分别以硫酸钡重量法、EDTA容量法及原子吸收法测定了硅钙钡镁合金中的Ba、Ca、Mg,结果与硅钙钡合金标样的标准值相符。加标回收试验的回收率为99.00%～102.00%,样品5次测定的RSD小于1.19%。Determination of barium, calcium and magnesium in Si-Ca-Ba-Mg Alloy was reported in this paper. Samples were dissolved in HNO_(3)-HF-HClO_(4).Barium,calium and magnesium in Si-Ca-Ba-Mg alloy were determined by BaSO_(4) gravimetry, EDTA volumetry and AAS respectively. The recoveries for these elements were (99.0%～)102.0% with precision of less than 1.19% RSD(n=5). The method has been applied to the determination of these elements in the standard samples and the results are in agreement with certified values.

关 键 词：回收试验 RSD 原子吸收法 HC 测定 HF 硫酸钡 镁合金 EDTA容量法 试样 

分 类 号：P744[天文地球—海洋科学] TG146[一般工业技术—材料科学与工程]