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低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)

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周光明, 沈祥, 游水英, 王莉, 黄成. 低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)[J]. 环境化学, 2006, 25(4): 511-512.
引用本文: 周光明, 沈祥, 游水英, 王莉, 黄成. 低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)[J]. 环境化学, 2006, 25(4): 511-512.
shu
ZHOU Guang-ming, SHEN Xiang, YOU Shui-ying, WANG Li, HUANG Cheng. DETERMINATION OF Cr(Ⅵ)BY LOW PRESSURE ION CHROMATOGRAPHY(LPIC)WITH COUPLED CHEMILUMINESCENCE SENSITIZED BY TWEEN- 20[J]. Environmental Chemistry, 2006, 25(4): 511-512.
Citation: ZHOU Guang-ming, SHEN Xiang, YOU Shui-ying, WANG Li, HUANG Cheng. DETERMINATION OF Cr(Ⅵ)BY LOW PRESSURE ION CHROMATOGRAPHY(LPIC)WITH COUPLED CHEMILUMINESCENCE SENSITIZED BY TWEEN- 20[J]. Environmental Chemistry, 2006, 25(4): 511-512.
shu

低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)

  • 1.

    西南大学化学化工学院, 重庆, 400715

  • 基金项目:

    重庆自然科学基金(CSTC-2004BB7087)资助项目.

DETERMINATION OF Cr(Ⅵ)BY LOW PRESSURE ION CHROMATOGRAPHY(LPIC)WITH COUPLED CHEMILUMINESCENCE SENSITIZED BY TWEEN- 20

  • 1.

    School of Chemistry and Chemical Engineering, Southwest China University, Chongqing, 400715, China

  • Fund Project:

  • 摘要: Cr(Ⅵ)经低压离子色谱分离,与K4Fe(CN)6反应生成的K3Fe(CN)6再和Luminol化学发光反应偶合,表面活性剂吐温-20对此化学发光有很强的增敏作用.优化条件下,Cr(Ⅵ)浓度与化学发光强度在2.8×10-9-1.0×10-6g·ml-1范围内成正比,检出限达9.3×10-10g·ml-1.用于江水中Cr(Ⅵ)测定,结果与标准方法一致.
    Abstract: A method for the determination of Cr(Ⅵ) is developed.Cr(Ⅵ) is separated by low pressure ion chromatography,and then reacts with K4Fe(CN)6 to form K3Fe(CN)6.The product reacts further with luminol to produce chemiluminescence,which is greatly enhanced by Tween-20.Under optimum conditions,the concentration of Cr(Ⅵ) is proportional to chemiluminescence intensity in the range of 2.8×10-9—1.0×10-6(g·ml-1)(r=0.9982),with a detection limit of 9.3×10-10 g·ml-1(3σ).This method can be applied to the determination of Cr(Ⅵ)in river water and the result agrees well with standard method.
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  • 收稿日期:  2005-10-18
周光明, 沈祥, 游水英, 王莉, 黄成. 低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)[J]. 环境化学, 2006, 25(4): 511-512.
引用本文: 周光明, 沈祥, 游水英, 王莉, 黄成. 低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)[J]. 环境化学, 2006, 25(4): 511-512.
shu
ZHOU Guang-ming, SHEN Xiang, YOU Shui-ying, WANG Li, HUANG Cheng. DETERMINATION OF Cr(Ⅵ)BY LOW PRESSURE ION CHROMATOGRAPHY(LPIC)WITH COUPLED CHEMILUMINESCENCE SENSITIZED BY TWEEN- 20[J]. Environmental Chemistry, 2006, 25(4): 511-512.
Citation: ZHOU Guang-ming, SHEN Xiang, YOU Shui-ying, WANG Li, HUANG Cheng. DETERMINATION OF Cr(Ⅵ)BY LOW PRESSURE ION CHROMATOGRAPHY(LPIC)WITH COUPLED CHEMILUMINESCENCE SENSITIZED BY TWEEN- 20[J]. Environmental Chemistry, 2006, 25(4): 511-512.
shu

低压离子色谱分离-吐温-20增敏偶合化学发光检测Cr(Ⅵ)

  • 1. 西南大学化学化工学院, 重庆, 400715
  • 收稿日期:  2005-10-18
基金项目:

重庆自然科学基金(CSTC-2004BB7087)资助项目.

摘要: Cr(Ⅵ)经低压离子色谱分离,与K4Fe(CN)6反应生成的K3Fe(CN)6再和Luminol化学发光反应偶合,表面活性剂吐温-20对此化学发光有很强的增敏作用.优化条件下,Cr(Ⅵ)浓度与化学发光强度在2.8×10-9-1.0×10-6g·ml-1范围内成正比,检出限达9.3×10-10g·ml-1.用于江水中Cr(Ⅵ)测定,结果与标准方法一致.

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