应用化学

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N-溴代琥珀酰亚胺-二氯荧光素化学发光体系测定废水中5-磺基水杨酸

樊雪梅*,王书民,李倩,王香婷,王宪生,陈凤英   

  1. (商洛学院化学与化学工程系 商洛 726000)
  • 收稿日期:2012-06-05 修回日期:2012-08-04 出版日期:2013-04-10 发布日期:2013-04-10
  • 通讯作者: 樊雪梅,讲师; Tel/Fax:0914-2986027; E-mail:fanxuemei527@163.com; 研究方向:光分析化学
  • 基金资助:
    商洛学院资助项目(12SKY-FWDF014)

Determination of 5-Sulfosalicylic Acid in the Waste Water by NBS-Dichlorofluoresce in Chemiluminescence System

FAN Xuemei*, WANG Shumin, LI Qian, WANG Xiangting, WANG Xiansheng, CHEN Fengying   

  1. (Department of Chemistry and Chemical Engineering,Shangluo College,Shanxi Shangluo 726000,China)
  • Received:2012-06-05 Revised:2012-08-04 Published:2013-04-10 Online:2013-04-10

摘要: 建立了测定5-磺基水杨酸的流动注射化学发光新方法。 研究了影响化学发光强度的因素,并初步探讨了可能的发光机理。 在最佳化学发光条件下,化学发光强度与5-磺基水杨酸浓度在5.0×10-8~2.0×10-5 mol/L范围内呈良好的线性关系,检出限为1.0×10-8 mol/L,对5.0×10-6 mol/L的5-磺基水杨酸平行测定9次,其相对标准偏差为2.7%。 该法可用于强力霉素废水中5-磺基水杨酸的测定。

关键词: 流动注射, 化学发光, 二氯荧光素, 磺基水杨酸

Abstract: A new flow-injection chemiluminescence method for the determination of 5-sulfosalicylic acid was proposed. Various factors affected the chemiluminescence signal were investigated and the possible mechanism was also studied. Under the optimum conditions, the linear range for the determination of 5-sulfosalicylic acid was 5.0×10-8~2.0×10-5 mol/L with a detection limit(S/N=3) of 1.0×10-8 mol/L. The relative standard deviation was 2.7% for 5.0×10-6 mol/L 5-sulfosalicylic acid solution in nine repeated measurements. The method was successfully applied to the determination of 5-sulfosalicylic acid in the waste water of doxycycline.

Key words: flow-injection, chemiluminescence, Dichlorofluorescein, sulfosalicylic acid

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