吖啶橙共振散射光谱法快速测定水中痕量亚氯酸根  

Acridine orange resonance scattering spectrometry for rapid determination of trace chlorite in water

作　　者：凌绍明[1] 欧阳辉祥[1] 陈盛余[1] 谢宇奇[1] Ling Shaoming Ouyang Huixiang Chen Shengyu Xie Yuqi(College of Chemistry and Environment Engineering, Baise University,Baize 533099, Chin)

机构地区：[1]百色学院化学与环境工程学院,广西百色533099

出　　处：《工业水处理》2016年第9期89-91,共3页Industrial Water Treatment

基　　金：桂西区域生态环境分析和污染控制广西高校重点实验室资助(桂教科研[2014]6号)

摘　　要：在盐酸介质条件下,I-被亚氯酸根氧化成I2,I2再与过量的I-形成阴离子I3-。体系中带正电荷的吖啶橙（AO）与I3-在静电力的作用下形成缔合物微粒,导致体系的共振散射强度增强,据此建立了一种用共振散射光谱法测定水中亚氯酸根的新方法。研究了碘化钾和AO用量等因素对体系的影响,优化了实验条件。在最佳实验条件下,亚氯酸根质量浓度在7.18×10^-4-0.114 mg/L范围内与ΔIRS呈良好的线性关系。该方法的线性方程为ΔIRS=870.39ρ＋9.273 9,相关系数（R2）为0.992 7,检出限（3σ）为1.8×10^-4 mg/L。In the presence of hydrochloride medium, I-has been oxidized by chlorite, forming I2,Then it is combined with excessive I^-,forming anion I3^-. In the system,mixing positive charged acridine orange （AO） with I3-forms an association fine particle under the action of electrostatic force ,and results in the enhancement of resonance scattering intensity of the system. Based on these, a new method for the determination of chlorite in water by resonance scattering spectrometry is developed. The influences of the factors, such as the dosages of KI, AO, etc. on the system are investigated. Under the optimized experimental conditions, the mass concentrations of chlorite is in the range of 7.18× 10^-4-0.114 rag/L, and have good linear relationship with △/RS The linear equation of the method is Alas=870.39p＋9.273 9, the related coefficient（R2） is 0.992 7, and the detection limit（3σ） is 1.8×10^-4 mg/L.

关 键 词：亚氯酸根 吖啶橙 共振散射光谱法 缔合微粒 

分 类 号：O657.3[理学—分析化学] TU991.21[理学—化学]