基于电渗析离子转型的氨氮检测研究

Detection of ammonia-nitrogen in water on base of electrodialysis ion transition

提出了一种基于电渗析离子转型的水质氨氮检测方法。该方法以电极测定法为基础，利用电渗析电解原理，通过离解去离子水生成强碱性电解水，再与待测水样混合进行测定。实验结果表明该方法检测0．1—10mg/L范围内的氨氮，相对标准偏差〈4％，加标回收率在97％-105％，相对于国标法的偏差在4％以内，满足在线分析测试的要求。

A method for the detection of ammonia-nitrogen in water on base of electrodialysis ion transition has been presented. The method is carried out on base of electrode determination, by using electrodialytic electrolysis principles, producing strong-alkaline electrolytic water through decomposing deionized water, and then mixing with the water samples to be tested. The experimental results show that for the detection of ammonia-nitrogen in the range of 0.1-10 mg/L, the relative standard deviation is less than 4%, the standard recovery rate is between 97% and 105%, and the deviation is within 4% compared with the international standard method. The method can meet the require- ments of on-line analysis test.