引用本文:冯锦梅.在线监测氨氮浓度的电导测量方法研究[J].环境监控与预警,2014,6(1):34-38
FENG Jin mei.Study on the Conductivity Measurement Method for Ammonia On line Monitoring[J].Environmental Monitoring and Forewarning,2014,6(1):34-38
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在线监测氨氮浓度的电导测量方法研究
冯锦梅
姜堰市环境监测站
摘要:
建立了适用于氨氮在线监测的干法蒸馏-电导法和湿法蒸馏-电导法。该方法是通入一定流量的气量于含氨试样中,全沸腾加热,蒸发出的氨和水蒸气一起经冷凝器后,进入酸吸收液中。酸吸收液的电导率随氨氮蒸馏液的吸收发生变化,其变化的值和样品中氨氮的浓度呈一定的比例关系。研制出的氨氮在线监测仪结构简单,运行稳定可靠,测量结果准确。
关键词:  干法蒸馏  湿法蒸馏  电导法  在线监测
DOI:
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基金项目:
Study on the Conductivity Measurement Method for Ammonia On line Monitoring
FENG Jin mei
Abstract:
This article introduces the dry distillation conductance method and the wet distillation conductance method which could be used in the design of on line ammonia nitrogen analyzer. This method is passing flow of gas into ammonia containing sample and full boiling; let the ammonia and water vapor evaporated through the condenser to enter the acidic absorption solution. The conductivity of the absorption solution will change by the absorption of ammonia distillation fluid. The changing value is in proportion with the concentration of ammonia in the sample. The on line ammonia nitrogen analyzer which designed by this method is simply structured, in stable and reliable operationand could give the accurate measurement result.
Key words:  Dry distillation  Wet distillation  Conductance method  On line monitoring