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| pH值与湿度的光纤传感器研究 | |
| 引用本文： | 罗呜,董飒英,程文华,李庆芬.pH值与湿度的光纤传感器研究[J].分析科学学报,2007,23(1):25-29. |
| 作者姓名： | 罗呜 董飒英 程文华 李庆芬 |
| 作者单位： | 1. 哈尔滨工程大学材料科学与化学工程学院,哈尔滨,150001;海洋腐蚀与防护国防科技重点实验室,山东,青岛,266071;中国船舶重工集团公司第七二五研究所,河南,洛阳,471039 2. 海洋腐蚀与防护国防科技重点实验室,山东,青岛,266071;中国船舶重工集团公司第七二五研究所,河南,洛阳,471039 3. 哈尔滨工程大学材料科学与化学工程学院,哈尔滨,150001 |
| 摘 要： | 本文采用溶胶凝胶法和包埋法分别将对pH值和湿度敏感的指示剂修饰在光纤纤芯表面,制成了具有较宽检测范围的光纤pH传感器和光纤湿度传感器。通过X射线能谱仪(EDX)对所制备的pH和湿度敏感膜的表面成分进行了分析,并采用光功率计对敏感膜进行了光学检测。结果表明:当pH值在4.5~13的范围内变化时,光输出功率与pH值近似呈线性变化规律;当相对湿度(RH)在25%~80%的范围内变化时,光输出功率与RH值近似呈线性变化规律,并且二者在其检测范围内均具有良好的可逆性。 |
| 关 键 词： | 光纤化学传感器 溶胶凝胶 pH值 相对湿度 敏感膜 |
| 文章编号： | 1006-6144(2007)01-0025-05 |
| 修稿时间： | 2006-07-04 |
Study on Fiber Optic pH and Humidity Sensors |
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| LUO Ming,DONG Sa-ying,CHENG Wen-hua,LI Qing-fen.Study on Fiber Optic pH and Humidity Sensors[J].Journal of Analytical Science,2007,23(1):25-29. | |
| Authors: | LUO Ming DONG Sa-ying CHENG Wen-hua LI Qing-fen |
| Institution: | 1. School of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001; 2. State Key Laboratory for Marine Corrosion and Protection, Qingdao, Shandong 266071; 3. Luoyang Ship Material Research Institute, Luoyang, Henan 471039 |
| Abstract: | The fiber optic pH sensor was prepared by immobilizing a mixture of three pH-sensitive dyes(cresol red,bromophenol blue and chlorophenol red) on the surface of the fiber core using sol-gel technology.Additionally, the humidity sensitive indicator was embedded on the surface of the fiber core fabricating a long-range fiber optic humidity sensor.The composition of the sensitive films were analyzed by energy dispersive X-ray detector(EDX).The results indicated that the pH sensor had a linear and reproducible pH response in the pH range from 4.5 to 13.0,and the humidity sensor had a similar response to the pH sensor in the ralative humidity range from 25% to 80%.Some optical tests were also carried out to testify the reversibility of the fiber optic pH and humidity sensors. |
| Keywords: | Fiber optic chemical sensors Sol-gel pH Relative humidity Sensitive film |
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