| 流动注射在线液—液萃取原子吸收光谱法测定生物样品中的铅 |
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| 引用本文： | 帅琴 梁永东. 流动注射在线液—液萃取原子吸收光谱法测定生物样品中的铅[J]. 分析试验室, 1997, 16(3): 57-59 |
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| 作者姓名： | 帅琴 梁永东 |
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| 作者单位： | 中国地质大学应用化学系 |
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| 摘 要： | 本文利用所设计的一种新型流动注射液－液萃取重力分相器，建立了流动注射液溶剂萃取原子吸收光谱法测定铅的新方法，详细地研究了流动注射在线萃取的实验条件及流路系统，方法的精密度和检出限分别为２．５％（ｎ＝１１）和２．８μｇ／Ｌ（ｋ＝３）。用拟定的方法测定了峰蛹，粮食等生物样品中的铅，结果与参考值相吻合。
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| 关 键 词： | 流动注射 萃取 原子吸收光谱法 铅 |
On Line Determination of Lead in Biological Specimen by Flame Atomic Absorption Spectrometry with Solvent Extraction Flow Injection |
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| Abstract: | A new method for the determination of lead with a liquid liquid flow extraction system associated with a newly designed phase separator was proposed.Experimental conditions and manifold parameters were investigated in detail.The detection limit was 2.8ng/mL (k=3),and the precision was 2.5% ( n =11).The sample throughput for lead was 45/h.The method was applied to the determination of lead in bee chrysalis and rice with satisfactory results. |
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| Keywords: | Flow injection analysis liquid-liquid extraction atomic absorption spectrometry lead. |
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