| 浊点萃取-火焰原子吸收光谱法测定钨矿样品中的痕量金 |
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| 引用本文： | 张旻杰,刘红波,朱业晋.浊点萃取-火焰原子吸收光谱法测定钨矿样品中的痕量金[J].中国钨业,2007,22(6):46-48. |
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| 作者姓名： | 张旻杰 刘红波 朱业晋 |
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| 作者单位： | 赣南师范学院,化学与生命科学学院,江西,赣州,341000 |
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| 摘 要： | 建立了以二乙基二硫代磷酸(DDTP)为络合剂,以非离子型表面活性剂Triton X-114为萃取剂的浊点萃取分离富集-火焰原子吸收光谱法测定痕量金的新方法。试验了溶液的酸度、络合剂和表面活性剂浓度、平衡温度和时间等条件对浊点萃取效果的影响。该方法对金的检出限为2.5ng/mL,相对标准偏差(RSD)为2.7%(n=10),回收率在96%～105%之间。可用于钨矿样品中痕量金的测定。
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| 关 键 词： | 钨矿 金 浊点萃取 火焰原子吸收光谱法 |
| 文章编号： | 1009-0622（2007）06-0046-03 |
| 收稿时间： | 2007-09-30 |
| 修稿时间： | 2007年9月30日 |
Determination of Trace Aurum in Tungsten Samples by Flame Atomic Absorption Spectrometry after Cloud Point Extraction |
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| ZHANG Min-jie,LIU Hong-bo,ZHU Ye-jin.Determination of Trace Aurum in Tungsten Samples by Flame Atomic Absorption Spectrometry after Cloud Point Extraction[J].China Tungsten Industry,2007,22(6):46-48. |
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| Authors: | ZHANG Min-jie LIU Hong-bo ZHU Ye-jin |
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| Abstract: | A new method for the determination of trace aurum by flame atomic absorption spectrometry(FAAS) with cloud point extraction was proposed.Diethyldithiophosphate(DDTP) and triton X-114 were used as the chelating agent and surfactant respectively.The effects of experimental conditions such as acidity,concentrations of chelating agent and surfactant,equilibration temperature and time on cloud point extraction were investigated.Under the optimum conditions,the detection limit obtained for Au was 2.5 ng/mL,and the relative standard deviation was 2.7 %.The method was used in FAAS determination of trace Au in tungsten samples,and the recovery was in the range of 96 %~105 %. |
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| Keywords: | tungsten aurum cloud point extraction flame atomic absorption spectrometry |
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