论文部分内容阅读
利用蓝光LED(λmax =4 6 0nm )构建的氧荧光猝灭检测系统 ,考察了不同Ru配合物以甲基硅氧烷(TMOS)和二甲基二甲氧基硅烷 (DiMe DMOS)为共先驱体 ,制备的有机改性溶胶 凝胶 (sol gel)膜内荧光猝灭行为。DiMe DMOS的加入量会影响敏感膜的极性 ,从而影响敏感膜对氧浓度的响应。利用自行构建的装置对水体中氧进行了检测 ,传感膜对氧饱和水溶液测定的相对标准偏差为 1 12 % (n =6 ) ,响应时间为 30s,对氮饱和水溶液测定相对标准偏差为 0 39% (n =6 ) ,响应时间为 90s,敏感膜使用寿命大于 6个月。
Fluorescence quenching detection system based on blue LED (λmax = 460nm) was used to detect the fluorescence spectra of different Ru complexes with methylsiloxane (TMOS) and dimethyldimethoxysilane (DiMe DMOS) Fluorescence quenching behavior of the prepared organic modified sol gel. The amount of DiMe DMOS added affects the polarity of the sensitive membrane and thus the responsiveness of the sensitive membrane to the oxygen concentration. Oxygen was detected in water using a self-built device. The relative standard deviation (RSD) of the sensing membrane to oxygen-saturated aqueous solution was 12% (n = 6) and the response time was 30 s. The relative standard deviation 39% (n = 6), the response time of 90s, sensitive membrane service life of more than 6 months.