| 银-二乙基二硫代氨基甲酸钠法测定铁矿石中砷溶样方式的改进 |
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| 引用本文： | 黄睿涛,朱红玉.银-二乙基二硫代氨基甲酸钠法测定铁矿石中砷溶样方式的改进[J].岩矿测试,2007,26(5):423-424. |
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| 作者姓名： | 黄睿涛 朱红玉 |
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| 作者单位： | 1. 武汉钢铁集团鄂城钢铁有限责任公司质检中心,湖北,鄂州,436002
2. 云南出入境检验检疫局,云南,昆明,650228 |
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| 摘 要： | 改进了铁矿石样品溶解方法，尝试用硫-磷混酸溶解铁矿石样品，缩短了分析时间，提高了分析精度。溶解后的样品以银-二乙基二硫代氨基甲酸钠法（Ag—DDTC）用于部级标准物质测定，砷的测定结果与标准值相符；用于碱性矿石如球团样品中砷的分析，多名操作者的测定结果吻合。
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| 关 键 词： | 砷 硫-磷混酸 银-二乙基二硫代氨基甲酸钠法(Ag-DDTC) 样品溶解 铁矿石 |
| 文章编号： | 0254-5357（2007）05-0423-02 |
| 修稿时间： | 2006-11-15 |
Improvement of Sample Dissolution Method for the Determination of Arsenic in Iron Ores by Ag-DDTC Method |
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| HUANG Rui-tao,ZHU Hong-yu.Improvement of Sample Dissolution Method for the Determination of Arsenic in Iron Ores by Ag-DDTC Method[J].Rock and Mineral Analysis,2007,26(5):423-424. |
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| Authors: | HUANG Rui-tao ZHU Hong-yu |
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| Abstract: | The sample dissolution method is improved through using mixed acid of sulfuric acid-phosphoric acid to dissolve iron ore samples. Arsenic in sample solution from the new sample dissolution method is then determined by Ag-DDTC method. The new method provides the advantages of high precision, high efficiency and has been applied to the determination of arsenic in the Stand- ard Reference Materials. The results are in agreement with certified values and those by other analytical methods. |
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| Keywords: | arsenic sulfuric acid-phosphoric acid mixed acid Ag-DDTC method sample dissolution iron ore |
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