• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of environmental analytical chemistry >Development of a green effervescence-assisted dispersive liquid-liquid microextraction method using a home-made tablet disperser for trace analysis of Cd(Ⅱ) and Pb(Ⅱ)
【24h】

Development of a green effervescence-assisted dispersive liquid-liquid microextraction method using a home-made tablet disperser for trace analysis of Cd(Ⅱ) and Pb(Ⅱ)

机译：国产片剂分散剂绿色泡腾辅助分散液-液微萃取方法开发，用于痕量Cd（Ⅱ）和Pb（Ⅱ）的分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An analytical approach for the determination of trace amounts of Cd(II) and Pb(II) has been developed using a home-made tablet-based effervescence-assisted dispersive liquid-liquid microextraction (DLLME) method which was performed in a narrow-bore tube, followed by flame atomic absorption spectrometry. In this method, a mixture of tartaric acid, sodium bicarbonate and NaCl was used to make the disperser tablet. Then, microlitre level of an extraction solvent was added in the tablet, and then, it was released into a narrow-bore tube containing sample solution and a complexing agent. An acid-base reaction immediately occurred between tartaric acid and sodium bicarbonate, and the produced CO2 led to the dispersion of the extraction solvent into the solution as tiny droplets and subsequent extraction of the analytes. The method made possible the determination of Cd(II) and Pb(II) in the ranges of 0.1-10 and 1.0-20 mu g L-1, respectively. The limits of detection were obtained 0.43 and 0.05 mu g L-1 for Pb(II) and Cd(II), respectively. The limits of quantifications were 0.80 and 0.09 mu g L-1 for Pb(II) and Cd(II), respectively. Repeatability of the method, which is expressed as relative standard deviation, was obtained 3.1% (n=6, C=2 mu g L-1) and 1.3% (n=6, C=0.2 mu g L-1) for Pb(II) and Cd(II), respectively. The accuracy of the developed method was verified by analysing a certified reference material, namely SPS-WW2 Batch 108. Relative recoveries (84-107%, obtained at three fortification levels) confirmed the usefulness of the method for analysis of the analytes in the environmental water samples and fruit juices. The method was shown to be fast, reliable and environmentally friendly with low organic solvent consumption.
机译：已经开发了一种使用片剂的泡腾辅助分散液-液微萃取（DLLME）方法在窄口径中测定痕量Cd（II）和Pb（II）的分析方法管，然后进行火焰原子吸收光谱法。在该方法中，使用酒石酸，碳酸氢钠和NaCl的混合物制备分散片。然后，将微升水平的提取溶剂添加到片剂中，然后将其释放到包含样品溶液和络合剂的细孔管中。酒石酸和碳酸氢钠之间立即发生酸碱反应，产生的CO2导致萃取溶剂以微小液滴的形式分散在溶液中，随后萃取分析物。该方法使得测定Cd（II）和Pb（II）的范围分别为0.1-10和1.0-20μgL-1。 Pb（II）和Cd（II）的检出限分别为0.43和0.05μg L-1。 Pb（II）和Cd（II）的定量限分别为0.80和0.09μgL-1。对于Pb，该方法的重复性以相对标准偏差表示，分别为3.1％（n = 6，C = 2μgL-1）和1.3％（n = 6，C = 0.2μgL-1）。 （II）和Cd（II）。通过分析经认证的参考物质，即SPS-WW2批次108，验证了所开发方法的准确性。相对回收率（84-107％，在三个强化水平下获得）证实了该方法对环境中分析物的分析是有用的。水样本和果汁。该方法被证明是快速，可靠和环境友好的，有机溶剂消耗低。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号