| 施白妮,王学伟.火焰原子吸收光谱法测定锑矿石中铅含量[J].矿产勘查,2025,16(S2):175-179 |
| 火焰原子吸收光谱法测定锑矿石中铅含量 |
| Flame atomic absorption spectrometry for determination of lead content in antimony ores |
| 投稿时间：2025-11-29 |
| DOI：10.20008/j.kckc.2025s2024 |
| 中文关键词: 锑矿石 铅 火焰原子吸收光谱法 基体干扰 除锑处理 |
| 英文关键词: antimony ore lead flame atomic absorption spectrometry matrix interference antimony removal treatment |
| 基金项目: |
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| 摘要点击次数: 44 |
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| 中文摘要: |
| 本文建立了一种准确、快速测定锑矿石中铅含量的火焰原子吸收光谱法，重点解决了锑基体对铅测定带来的严重干扰问题。该方法采用王水溶矿分解样品，利用盐酸 -氢溴酸混合酸反复蒸干的方式挥发除锑，在 4%盐酸介质中，使用空气 -乙炔火焰，于 283. 3 nm波长下进行火焰原子吸收光谱法测定。方法检出限为铅 1. 03 μg·g-1。建立的方法提高了测定的正确度，相对标准偏差( RSD，n=6)小于 2. 1%。经采用国家级锑矿石标准物质验证，测定值与标准值吻合良好。该方法可有效消除锑的干扰，操作简便、分析快速，结果准确可靠，适用于锑矿石中铅的常规分析。 |
| 英文摘要: |
| This study establishes a flame atomic absorption spectrometry method for accurate and rapiddetermination of lead content in antimony ores，with particular emphasis on resolving the significant interference caused by antimony matrix. The method employs aqua regia dissolution for sample decomposition，followed by repeated evaporation and drying using a hydrochloric acid-hydrobromic acid mixed acid solution to volatilize and remove antimony. Determination is performed under an air-acetylene flame at 283. 3 nm wavelength in a 4%hydrochloric acid medium. The method achieves a detection limit of 1. 03 μg·g-1 for lead，demonstrating improved accuracy with a relative standard deviation(RSD，n=6)below 2. 1%. Validation using national antimony ore refer.ence materials showed excellent agreement between measured and standard values. The method effectively eliminates antimony interference，featuring simple operation，rapid analysis，and reliable results，making it suit. able for routine lead analysis in antimony ores. |
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