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本文研究并提出了测定循环冷却水和锅炉水系统中膦酸类化合物的新方法——紫外分解、抗坏血酸还原比色法。本方法操作简便,快速并很少干扰。聚磷同时存在情况下对有机磷测定没有影响。对于使用HEDP、ATMP、EDTMPS和多元醇膦酸酯等有机磷的水处理系统,可以作为现场监测,也可以用作这几类产品的含量测定。新方法系直接测定有机磷,精度显著优于目前的化学分解法。
In this paper, a new method for the determination of phosphonic acids in circulating cooling water and boiler water system has been researched and proposed - UV decomposition and ascorbic acid reduction colorimetry. The method is easy to operate, fast and with little interference. In the presence of polyphosphorus, there is no effect on the determination of organophosphates. Water treatment systems using organophosphorus compounds such as HEDP, ATMP, EDTMPS and polyol phosphonates can be monitored on-site as well as for the determination of these products. The new method is the direct determination of organic phosphorus, the accuracy is significantly better than the current chemical decomposition.