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水杨酸-次氯酸盐光度法测量氨氮时pH对氨氮在线监测仪测量结果的影响
引用本文:杨凯,李秀芳.水杨酸-次氯酸盐光度法测量氨氮时pH对氨氮在线监测仪测量结果的影响[J].中国环境监测,2013,29(3):123-127.
作者姓名:杨凯  李秀芳
作者单位:中国环境监测总站, 北京 100012;北京利达科信环境安全技术有限公司, 北京 100176
基金项目:国家水环境监测技术体系研究与示范基金资助项目(2009ZX07527-007)
摘    要:采用水杨酸-次氯酸盐光度法,研究了pH对KS2301氨氮在线监测仪测量结果的影响。研究结果表明,酸碱度对仪器测量结果的准确性均有影响,其中,酸度的影响较碱度的影响要大。当PH为11.6~11.7时,显色剂的显色效果最好,仪器在这个值附近测量结果最稳定。

关 键 词:酸碱度  氨氮在线监测仪  影响
收稿时间:2012/6/25 0:00:00
修稿时间:2012/9/13 0:00:00

The Influence of pH Value in the Measuring Results of Ammonia Nitrogen Online Monitoring Instruments with Method of Salicylic Acid-Hypochlorite
YANG Kai and LI Xiu-fang.The Influence of pH Value in the Measuring Results of Ammonia Nitrogen Online Monitoring Instruments with Method of Salicylic Acid-Hypochlorite[J].Environmental Monitoring in China,2013,29(3):123-127.
Authors:YANG Kai and LI Xiu-fang
Institution:China National Environmental Monitoring Centre, Beijing 100012, China;Beijing Leader Kings Environment Security Technology CO.LTD, Beijing 100176, China
Abstract:This paper is about the influence of pH value in the measuring results of ammonia nitrogen online monitoring instruments with method of Salicylic acid-hypochlorite.The results show that the pH value does have an effect on the accuracy of measurement results, from which we can conclude that the impact of acidity is greater than that of alkalinity. When the pH value is between 11.6 and 11.7, the colored effect of the reagent is best, and the measuring results of instruments are most stable.
Keywords:pH  ammonia nitrogen online monitoring instruments  impact
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