水中大肠杆菌检测传感器的稳定性  

The Stability of the Sensor for Detection of Escherichia coli in Water

作　　者：李达学[1] 方振东[1,2] 管亮[2] 冯国防 

机构地区：[1]后勤工程学院营房管理与环境工程系,重庆401311 [2]后勤工程学院军事油料应用与管理工程系,重庆401311 [3]第二炮兵后勤部基建营房部,北京100000

出　　处：《后勤工程学院学报》2013年第1期31-33,39,共4页Journal of Logistical Engineering University

基　　金：总后勤部基建营房部项目(BY111C012)

摘　　要：为了找到传感器稳定性最好时的脉冲周期,对传感器检测系统进行优化,实验研究了传感器检测饮用水中大肠杆菌时,脉冲周期对传感器稳定性的影响。传感器的构成属于三电极系统,采用常规脉冲伏安法进行检测。结果显示:脉冲周期为20,40,80 ms时传感器稳定性较好,基本不会影响检测结果;脉冲周期为100 ms时稳定性很差,对检测结果有较大影响。实验表明,选择合适的脉冲周期,加以硬件和软件补偿,可以使传感器获得较好的稳定性。In order to find the pulse period at the best stability, and to optimize the sensor detection system, the stability of sensor for detection of Escherichia coli in drinking water has been studied. The sensor consists of a three-electrode system, and it is used for parameter testing with normal pulse voltammetry. The research results show that the sensor has good stability when the pulse period is 20 ms, 40 ms and 80 ms, respectively, so it will not affect the test results. However, its stability is poor when the pulse period is 100 ms, which has great influence on testing results. Through experiments it is found that the sensor can achieve a good stability with appropriate pulse period, the hardware and software compensation.

关 键 词：传感器 大肠杆菌 伏安法 稳定性 

分 类 号：X853[环境科学与工程—环境工程]