| 改进的极谱法测定化探样品中的钨钼 |
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| 引用本文： | 贾玉萍,王湘玲,肖建平.改进的极谱法测定化探样品中的钨钼[J].岩矿测试,2009,28(5):494-496. |
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| 作者姓名： | 贾玉萍 王湘玲 肖建平 |
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| 作者单位： | 中国建筑材料工业地质勘查中心新疆总队实验室,新疆乌鲁木齐,830002 |
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| 基金项目： | 新疆维吾尔自治区矿产资源补偿费地质勘查项目资助 |
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| 摘 要： | 试样经氢氧化钾熔融,水提取,采用二苯乙醇酸代替苯羟乙酸,在硫酸-二苯乙醇酸-二苯胍-氯酸钾体系中,利用JP—06A精密极谱分析计测定钨、钼,使测定的灵敏度大为提高。钨、钼的峰电位分别为-0.76 V、-0.26 V(相对饱和甘汞电极),钨、钼含量在1.0~100.0 ng/mL时,峰高与浓度呈线性关系。方法经国家一级标准物质检验,测定结果与标准值吻合,方法精密度(RSD,n=12)钨、钼均小于5%。
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| 关 键 词： | 极谱法 二苯乙醇酸 极谱催化波 钨 钼 |
| 收稿时间： | 2008/11/12 0:00:00 |
| 修稿时间： | 2/6/2009 12:00:00 AM |
Determination of Tungsten and Molybdenum in Geochemical Exploration Samples by Modified Polarography |
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| JIA Yu ping,WANG Xiang ling and XIAO Jian ping.Determination of Tungsten and Molybdenum in Geochemical Exploration Samples by Modified Polarography[J].Rock and Mineral Analysis,2009,28(5):494-496. |
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| Authors: | JIA Yu ping WANG Xiang ling and XIAO Jian ping |
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| Institution: | Laboratory of XinJiang Geological Exploration Center, China Building Materials Industry Corps;Laboratory of XinJiang Geological Exploration Center, China Building Materials Industry Corps;Laboratory of XinJiang Geological Exploration Center, China Building Materials Industry Corps |
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| Abstract: | The sample is melted with potassium hydroxide and extracted with deionized water.In sulfuric acid-diphenyl glycollic acid-diphenyl guanidine-potassium chlorate system,tungsten(W) and molybdenum(Mo) produce polarographic catalytic waves with peak potentials(vs SCE) at-0.76 V and-0.26 V,respectively.The method provides the high sensitivity and wide dynamic linear range(1.0~100.0 ng/mL for W and Mo).The method has been applied to the determination of W and Mo in National Standard Reference Materials and the results are in agreement with certified values with precision of less than 5%RSD(n=12). |
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| Keywords: | polarography diphenyl glycollic acid polarographic catalytic wave tungsten molybdenum |
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