复合电极法测定水中游离的CO_2

Determination of Aquatic Dissociate Carbon Dioxide by Compounding Electrode

介绍了ＣＯ２复合电极的研制及测定水中游离ＣＯ２浓度的方法。结果表明：该方法测定浑浊、有色、ｐＨ＞８的水中游离ＣＯ２的浓度，在０．００６～０．４０ｍｇ／Ｌ范围内符合线性关系，相对平均偏差１．１％，较传统的滴定法便简、准确。

The tritura of CO 2 compounding electrode and the method of determinating the aquatic dissociate CO 2 concentration are introduced.The results show that the way we selected can determine the aquatic dissociate CO 2 in various water which is muddy,colourful and pH>8.Aquatic dissociate CO 2 can be well determined by this method in the range from 0.006mg/L to 0.40mg/L.This method can save time and is more simple and ready and accurate which compares with the traditional titrimetry.