摘要
基于铵氮的荧光分析方法研制了一种便携式铵氮荧光检测仪,由样品检测模块、信号放大与压频转换模块、测频模块、数据显示与存储模块和电源模块组成。仪器的基线和恒定信号响应可稳定2 h;铵氮浓度在0-4 000 nmol/L范围内时,其测定结果与通用仪器测定结果有线性相关性;仪器可测定实际水样中的铵氮浓度,与通用仪器的测定结果无显著差异。
A portable fluorescence analyzer of ammonium was developed based on fluorescence analysis method. The analyzer was made of sample detection module,signal amplifying and voltage-frequency converting module,frequency measurement module,data displaying and memory module and power module. Both the baseline and response to a constant signal of the analyzer can maintain stable for 2 hours. The signals of ammonium solutions whose concentration were in the range of 0 - 4 000 nmol / L were separately detected by both the analyzer and a universal apparatus,and the results of the analyzer had a linear correlation with those of the universal apparatus. The analyzer is used to determine ammonium concentration in actual water samples,and the results have no significant differences with those of the universal apparatus.
出处
《仪表技术与传感器》
CSCD
北大核心
2015年第6期31-33,52,共4页
Instrument Technique and Sensor
基金
国家自然科学青年基金项目(41206077)
