《黄金》杂志(月刊) 第39卷 总第415期
2018年07月 第07期
目次
分析测试
  • 酸性硫脲浸取-石墨炉原子吸收光谱法测定化探样品中的微量银……陈洪流,柳城,高升,李永林,次仁曲总,格桑措姆,董海胜
  • 摘 要:针对传统方法测定化探样品中的银存在流程长、环境污染等问题,实验采用酸性硫脲溶液浸取银,石墨炉原子吸收光谱法测定。通过条件实验确定灰化温度900 ℃、原子化温度1 900 ℃、酸性硫脲溶液用量30 g/L、浸取时间4 h。该方法检出限0.028 μg/g,经国家一级标准物质验证,测定结果与标准值基本一致,准确度和精密度良好,且方法操作简单、流程短,适用于化探样品中微量银的分析测定。

    Determinationof trace silver by graphite furnace atomic absorption spectrometry coupled withacid thiourea leaching……Chen Hongliu,Liu Cheng,Gao Sheng,Li Yonglin,Cirenquzong,Kelsang Tsomo,DongHaisheng

    AbstractConventional method to determine silver in geochemical samples is lengthyand pollutes the environment.The paper conducted the experiment where silverwas leached with acidic thiourea and determined by graphite furnace atomicabsorption spectrometry.Condition experiment determined the parameters asfollows:the ashing temperature is 900 ,atomizing temperature is 1 900 ,acidic thiourea dosage is 30 g/L,leach time is 4 h.Thedetection limit is 0.028 μg/g.Verified by the determination of national primary referencematerials,the determination result are consistent with the standard values.Themethod is easy and short with accuracy and precision,applicable to thedetermination of trace silver in geochemical samples.

    Keywords:acidic thiourea; graphite furnace atomic absorption spectrometry;geochemical sample; silver; leach


  • 关键词:酸性硫脲;石墨炉原子吸收光谱法;化探样品;银;浸取
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