磁性碳纳米管固相萃取-原子荧光光谱法测定水中痕量镉

发布时间：2018-03-13 18:22

本文选题：原子荧光光谱法　切入点：镉　出处：《理化检验(化学分册)》2015年06期 　论文类型：期刊论文

【摘要】：建立了检测水中痕量镉的磁性固相萃取-原子荧光光谱法。制备磁性碳纳米管,以其作为固相萃取吸附剂用来萃取和富集水中的痕量镉,采用氢化物发生-原子荧光光谱法进行检测。在最佳条件下,镉在0.05~5.0μg·L-1范围内呈线性,检出限(3σ)为1.6 ng·L-1。加标回收率在97.1%~101%之间,测定值的相对标准偏差在1.6%~4.8%之间。方法用于分析标准物质,测定值与认定值相符。
[Abstract]:A magnetic solid phase extraction-atomic fluorescence spectrometry for the determination of trace cadmium in water was established. Magnetic carbon nanotubes were prepared and used as adsorbents for the extraction and enrichment of trace cadmium in water. Hydride generation-atomic fluorescence spectrometry (HG-AFS) was used to detect cadmium. Under the optimum conditions, cadmium was linear in the range of 0.05 渭 g 路L ~ (-1), the detection limit was 1.6 ng 路L ~ (-1), and the recovery rate was between 97.1g 路L ~ (-1) and 10.1%. The relative standard deviation of the determination value is between 1.6% and 4.8%.
【作者单位】：淮安市疾病预防控制中心;
【基金】：江苏省卫生厅预防医学科研基金(Y2013037) 淮安市科技局科技支撑(社会发展)项目基金(HAS201303) 淮安市预防医学科研课题项目(HAYF201514)
【分类号】：O657.31;R123.1

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