水中可吸附有机氯(AOCl)的测定——离子色谱法

Determination of Adsorbable Organic Chlorine (AOCl) in Water by Lonchromatography.

采用自制的燃烧装置，使吸附在活性炭上的有机氯定量地转化为无机氯，经硼砂双氧水溶液吸收，用离子色谱法分离测定。当富集水样的体积为５０～２００ｍｌ时，可测定可吸附有机氯（ＡＯＣｌ）的范围为２８～１０００μｇ／Ｌ。当样品中ＡＯＣｌ含量在１６～６４μｇ时，平均加标回收率大于９０％，相对标准偏差小于１０％。用该方法还可同时测定水中可吸附有机硫。

Organic chlorine compounds adsorbed on activated carbon are burned and decomposed into inorganic chlorine in high temperature oxygen stream.The chlorine is absorbed by alkaline solution which is separated and measured by lon chromatography.The determination range:28～1000μg/L.The recovery range:93 1～107 0μg/L.Relative standard deviation<10%。