| ICP-OES法测定矿石中钨的含量 |
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| 引用本文： | 刘芝花,宋旭东,侯冀川. ICP-OES法测定矿石中钨的含量[J]. 广东化工, 2014, 0(5): 162-163,169 |
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| 作者姓名： | 刘芝花 宋旭东 侯冀川 |
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| 作者单位： | [1]广东省特种设备检验研究院东莞检测院,广东东莞523120 [2]国家钨与稀土产品质量监督检验中心,江西赣州341000 |
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| 摘 要： | 文章通过酸溶样品,利用柠檬酸和过氧化氢络合钨钼,抑制酸性介质中钨酸、钼酸析出,同时采用矿石标准物质作校正曲线,电感耦合等离子体发射光谱法测定矿石中的钨。建立了一种快速准确分析批量矿石样品中钨的ICP-OES法。检出限为0.0009%。用本方法测定国家一级矿石标准物质和选矿样品中的钨含量,测定值与认定值或硫氰酸盐光度法的实验值吻合。精密度为0.57%~4.66%,加标回收率在95%~101%之间。
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| 关 键 词： | 电感耦合等离子体发射光谱法 矿石 钨 |
Determination of Tungsten in Ores by Inductively Coupled Plasma-Optical Emission Spectrometry |
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| Liu Zhihua,Song Xudong,Hou Jichuan. Determination of Tungsten in Ores by Inductively Coupled Plasma-Optical Emission Spectrometry[J]. Guangdong Chemical Industry, 2014, 0(5): 162-163,169 |
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| Authors: | Liu Zhihua Song Xudong Hou Jichuan |
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| Affiliation: | 1. Dongguan Branch of Guangdong Institute of Special Equipment Inspection and Research Institute, Dongguan 523120; 2. National Tungsten ＆ Rare-earth Product Quality Supervision Testing Center, Ganzhou 341000, China) |
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| Abstract: | In the paper, the tungsten in ores were dissolved by acids, and the content of tungsten in the solution was determined by inductively coupled plasma-optical emission spectrometry. The precipitation of tungsten acid and molybdenum acid was inhibited by complexing action of citric acid and hydrogen peroxide to guarantee the determination accuracy of tungsten. A novel method for the determination of tungsten in ores by inductively coupled plasma-optical emission spectrometry was developed. The detection limit was 0.0009 %. Results of tungsten were in agreement with the certified values of national standard reference materials and those obtained by thiocyanate spectrophotometry method. The relative standard deviation （RSD） were 0.57 %--4.66 %, and found recoveries were in the range of 95 %-101%. |
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| Keywords: | inductively coupled plasma-optical emission spectrometry： ore： tungsten |
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