LAPS对溶液pH值二维分布测量的研究  

RESEARCH ON THE MEASURE OF THE TOW-DIMENSION pH DISTRIBUTION OF THE SOLUTION WITH LAPS

作　　者：林立旻[1] 牛文成[1] 赵煜[2] 喻骏[1] 秦艳[2] 

机构地区：[1]南开大学信息技术科学学院,天津300071 [2]天津大学精密仪器与光电子学学院,天津300072

出　　处：《南开大学学报（自然科学版）》2003年第4期11-15,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金资助项目(60176028)

摘　　要：本文主要讲述了利用LAPS(Light-addressable Potentiomettic Sensors)对溶液pH值分布进行测量 的理论依据和实验分析,通过光照传感器表面不同的位置,可以得到取决于表面电位的光电流,所以通过扫描光 点可以得到传感器表面的电位分布,从而画出溶液pH值二维分布的灰度图。In this report, mainly deals with the theory and the analysis of the experiment about the measure of the tow-dimension pH distribution of the solution with LAPS (Light-addressable Potentiometric Sensors). By illuminating parts of the sensor surface with a light pointer, a photocurrent flows of which the amplitude depends on the local surface potential. In this way, an image of the surface potential distribution across the sensor surface can be obtained by scanning the light pointer while the photocurrent is recorded and then the tow-dimension pH distribution map of the certain solution can be drawn in different gray levels.

关 键 词：LAPS PH 表面电位 灰度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]