水中可吸附有机硫(AOS)的测定——离子色谱法

使吸附在活性炭上的有机硫化物在高温氧气流中燃烧、分解、定量地转化为无机硫的氧化物，经硼砂双氧水溶液吸收，生成硫酸根离子，用离子色谱法分离测定．可测定ＡＯＳ的范围为２５～１３３３μｇ／Ｌ，回收率为８６．６％，相对标准偏差小于１０％（ｎ＝３５）用该方法还可同时测定水中的可吸附有机氯．

Determination of Adsorbable Organic Sulphur (AOS) in Water by lonchsomatogsaphy

Abstract Organic sulphur compounds adsorbed by activated carbon are burnned and decomposed into oxides of inorganic sulphur in high temperature oxygen stream.The oxides are adsorbed by alkaline hydrogen peroxide(H_2O_2) solution and oxidized into sulphate which is separated and measured by lon-chromatography.The determination range:25～1333μg/L.The recovery range:83.8～93.1%.Relative standard deviation<10%.Not only AOS but alse Aocl can be determinated simultaneously.