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中国无机分析化学:2019,9(3):13-16
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石墨炉原子吸收光谱法测定生活饮用水中砷的方法优化
(宁德市疾病预防控制中心)
Optimized Method for the Determination of Arsenic in Drinking Water by Graphite Furnace Atomic Absorption Spectrometry
(Ningde Center for Disease Control and Prevention,Ningde China 352100)
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投稿时间:2018-12-18    修订日期:2019-05-13
中文摘要: 建立了石墨炉原子吸收光谱法 (GFAAS)测定生活饮用水中砷的方法。高升压放电空心阴极灯的使用降低了基线噪声水平,降低了检出限。温度程序、化学基体改进剂和热稳定剂进行了优化并用于GFAAS测定砷,无需进行初步处理。研究结果显示:线性方程为y=0.00562x+0.00004,相关系数R为0.9983,样品体积为16μL时的检出限为0.26 μg/L。取实际饮用水样验证了其适用性。回收率98.1%~99.2%,相对标准偏差<5%。
Abstract:A method for the determination of arsenic in drinking water by graphite furnace atomic absorption spectrometry (GFAAS) was established. The use of high boost discharge hollow cathode lamp reduces the baseline noise level and detection limit. Temperature program, chemical matrix modifier and heat stabilizer were optimized and applied to the determination of arsenic by GFAAS without preliminary treatment. The results showed that the linear equation was y=0.00562x+0.00004, with R 0.9983. LOD was 0.26 ug/L when the sample volume is 16 ug/L. The applicability of the method was verified by the actual drinking water samples. The recoveries ranged from 98.1% to 99.2%, and RSD was less than 5%.
文章编号:     中图分类号:TQ658    文献标志码:
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引用文本:
周珊.石墨炉原子吸收光谱法测定生活饮用水中砷的方法优化[J].中国无机分析化学,2019,9(3):13-16.
ZHOU shan.Optimized Method for the Determination of Arsenic in Drinking Water by Graphite Furnace Atomic Absorption Spectrometry[J].Chinese Journal of Inorganic Analytical Chemistry,2019,9(3):13-16.

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