| 抗坏血酸增敏—石墨炉原子吸收光谱法测定痕量铊的方法研究 |
| |
| 引用本文： | 焦圣兵,胡梦颖,杜雪苗,徐进力.抗坏血酸增敏—石墨炉原子吸收光谱法测定痕量铊的方法研究[J].物探与化探,2019(3):642-648. |
| |
| 作者姓名： | 焦圣兵 胡梦颖 杜雪苗 徐进力 |
| |
| 作者单位： | 河北省区域地质矿产调查院;中国地质科学院地球物理地球化学勘查研究所;联合国教科文组织全球尺度地球化学国际研究中心 |
| |
| 基金项目： | 国土资源部公益性行业科研专项经费(201211081) |
| |
| 摘 要： | 采用石墨炉原子吸收光谱法测定土壤中的痕量铊。比较了两种不同的样品分解体系,建立了一种使用HNO_3+HF+H_2SO_4酸消解体系测量土壤中痕量铊的方法,同时探讨了石墨炉原子吸收光谱法测定铊的最佳仪器条件,并对基体改进剂浓度和体积、吸附解脱体系、吸附酸度以及震荡时间等条件进行了优化。该方法检出限为0.015×10-6,RSD为5.49%～13.42%,方法经国家一级标准物质验证,结果准确可靠。
|
| 关 键 词： | 铊 石墨炉原子吸收光谱法 抗坏血酸 地球化学样品 |
The determination of trace thallium in soil by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) using ascorbic acid as a sensitizer |
| |
| JIAO Sheng-Bing,HU Meng-Ying,DU Xue-Miao,XU Jin-Li.The determination of trace thallium in soil by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) using ascorbic acid as a sensitizer[J].Geophysical and Geochemical Exploration,2019(3):642-648. |
| |
| Authors: | JIAO Sheng-Bing HU Meng-Ying DU Xue-Miao XU Jin-Li |
| |
| Institution: | (Regional Geology Survey Institute of Hebei Province,Langf ang 065000,China;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;UNESCO International Centre on Global-Scale Geochemistry,Langfang 065000,China) |
| |
| Abstract: | A method for the pretreatment and determination of trace thallium in soil by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) with mixed acids sample digestion system was established. In this study, the authors investigated the optimum instrumental conditions for the determination and optimized the concentration and volume of the matrix modifier, adsorption-desorption system, adsorption acidity and the oscillation time. The detection limit was 0.015×10^-6 , and the relative standard deviation was from 5.49% to 13.42%. The method was verified by National Standard Reference Material and the results were accurate and reliable. |
| |
| Keywords: | thallium Graphite Furnace Atomic Absorption Spectrometry (GFAAS) ascorbic acid geochemical samples |
| 本文献已被 CNKI 维普 等数据库收录！ |
