利用旋转甩涂法K+交换玻璃光波导元件表面上固定甲基绿/聚乙烯醇敏感膜,成功地研制出一种丙酮光学传感器。实验结果表明:传感器对浓度在25~650mg/m3范围内的丙酮蒸气具有良好的线性响应,相关系数为0.991 15(n=5),检出限达到11mg/m3(S/N=3),响应时间小于3 s。该传感器具有较好的可逆性、重复性和成本低等特点。 An acetone optical sensor was successfully developed by immobilizing the methyl green / polyvinyl alcohol sensitive film on the surface of the K + -switched glass optical waveguide element by a spin-coating method. The experimental results show that the sensor has a good linear response to acetone vapor concentration of 25 ~ 650mg / m3, the correlation coefficient is 0.991 15 (n = 5), the detection limit of 11mg / m3 (S / N = 3) Response time is less than 3 s. The sensor has good reversibility, repeatability and low cost.