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| 石墨炉原子吸收测定地球化学样品中痕量金 | |
| 引用本文： | 赖秋祥. 石墨炉原子吸收测定地球化学样品中痕量金[J]. 江西有色金属, 2011, 0(6): 89-92 |
| 作者姓名： | 赖秋祥 |
| 作者单位： | 福建紫金铜业有限公司,福建上杭364214 |
| 摘 要： | 试样经灼烧，用王水加热分解，并在Fe^3＋存在下，于王水介质中用泡沫塑料吸附Au；吸附Au后的泡沫塑料再用10g／L硫脲溶液解脱，采用斜坡升温技术在220ZS石墨炉原子吸收光谱仪测定超痕量金．根据实验得出最佳分析条件，该方法检出限为0．1ng／g，精密度（RSD，n=12）4．2％-10．8％，经国家一级标准物质分析验证，结果与标准值相符． |
| 关 键 词： | 痕量金 石墨炉原子吸收光谱仪 地球化学样品 |
Determination of trace Au in geochemical exploration samples by GFAAS |
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| LAI Qiu-xiang. Determination of trace Au in geochemical exploration samples by GFAAS[J]. Jiangxi Nonferrous Metals, 2011, 0(6): 89-92 | |
| Authors: | LAI Qiu-xiang |
| Affiliation: | LAI Qiu-xiang (Zijin Copper Co. Ltd., Shanghang 364214, China) |
| Abstract: | The geochemical exploration sample was roasted and dissolved with aqua regia. The trace gold is absorbed by polyurethane foam from aqua regia medium under the presence of Fe^3＋ and released in 10 g/L thiourea solution. The trace gold is determined by GFAAS with the slope warming. The detection limit of the method is 0.1ng/g with the precision （RSD, n=12） of 4.2 %-10.8 %. The results conform to the certified values national standard reference material tests. through the |
| Keywords: | trace gold graphite furnace atomic absorption geochmical samples |
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