1. Regional Geology Survey Institute of Hebei Province, Langf ang 065000, China 2. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China 3. UNESCO International Centre on Global-Scale Geochemistry, Langfang 065000, China
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.
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, 43(3): 642-648.
Sheng-Bing JIAO, Meng-Ying HU, Xue-Miao DU, Jin-Li XU. The determination of trace thallium in soil by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) using ascorbic acid as a sensitizer. Geophysical and Geochemical Exploration, 2019, 43(3): 642-648.
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doi: 10.1016/j.jhazmat.2007.02.059
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