研究论文
范世福,陈莉,肖松山,李彦芳,欧国荣.环境监测用多参数光纤化学传感技术研究[J].环境科学学报,1999,19(2):200-204
环境监测用多参数光纤化学传感技术研究
- Research on multi parameter environmental sensing technique based on optical fiber
- 范世福
- 天津大学生物医学工程与科学仪器系,天津 300072
- 陈莉
- 天津大学生物医学工程与科学仪器系,天津 300072
- 肖松山
- 天津大学生物医学工程与科学仪器系,天津 300072
- 李彦芳
- 天津大学生物医学工程与科学仪器系,天津 300072
- 摘要:采用发光二极管、光导纤维和硅光电二级管检测器研制成可供环境水pH值和大气中SO2、NH3检测的光纤多参数传感系统。仪器对pH值的响应可低达0.01pH,对水中NH4+的检测限为2×10-6mol/L,SO32-的检测限为2×10-4mol/L;仪器体积小,可用电池供电、便于野外监测,检测准确、稳定,成本低廉。
- Abstract:A new optical fiber sensing system for pH in water,SO2 and NH3 in air monitoring was designed and developed.It consists of LED sources,optical fiber and silicon photodiode detector.The responsibility of the system for pH is 0.01 unit,the detective limits for 4+ in water is 2×10-6mol/L, and for SO32- is 2×10-4 mol/L.The system is compacts and can be powered with battery and used for filed monitoring.
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