Development of an optoacoustic sensor module for pH and/or CO2 determination in aqueous solutions
Development of an optoacoustic sensor module for pH and/or CO2 determination in aqueous solutions
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DOI：
10.1016/s0925-4005(96)02135-1
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发表时间：
1997-03-01
影响因子：
8.4
通讯作者：
Braun, AM
中科院分区：
文献类型：
--
作者：
Schlageter, B;Porting, S;Braun, AM
激光诱导光声光谱 (LIOAS) 已用于水溶液中 pH 值和/或 CO2 的定量分析。该技术意味着精确测量表面（例如聚合物膜）上吸附的指示剂染料的光谱变化。由于 LIOAS 与传统的反射光谱分析相比具有更高的灵敏度，pH 敏感膜和传感器模块的优化带来了有希望的结果。
Laser-induced optoacoustic spectroscopy (LIOAS) has been used for the quantitative analysis of pH and/or CO2 in aqueous solutions. This technique implies the precise measurement of spectral variations of indicator dyes adsorbed on surfaces (e.g., polymer membranes). Optimization of the pH-sensitive membrane and of the sensor module leads to promising results due to the higher sensitivity of LIOAS in comparison with the conventional analysis by reflection spectroscopy.