膜分离紫外连续测定水样中的二氧化氯

Continuous Determination of Chlorine Dioxide in Water Samples by Membrane Seperation and UV Spectroscopy

利用 Cl O2 能透过微孔性聚四氟乙烯膜 ( PTFE)的特性制成了 Cl O2 连续流动分离装置 ,实现了 Cl O2 与水相的分离。本法的检出限为 5.2× 1 0 - 2 mg/L,测定的线性范围 0 .2 4 mg/L～ 1 1 .81 mg/L,加标回收率为 96.8%～ 1 0 2 .8%。

A method was described for determination of chlorine dioxide in water samples by using porosity polytetrafluoroethylene membrane to separate ClO 2 from ClO -,ClO - 2,ClO - 3 et al and UV absorption spectroscopy. The linear range is 0.24 mg/L～11.81 mg/L for ClO 2 with detection limit of 5.2 mg/L. The recovery was 96.8～102 8% with the standard addition method.