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Photoacoustic detection and glucose concentration prediction of solutions mixed glucose with salt based on OPO pulsed laser excitation
Author(s): Zhong Ren; Guodong Liu
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Paper Abstract

In this paper, the photoacoustic detection of aqueous solutions mixed glucose and salt was experimentally studied based on the established photoacoustic detection system in the lateral mode. In the experimental system, the OPO pulsed laser was used as the excitation light source and the non-focused ultrasonic transducer was used to capture the photoacoustic signals. In the experiments, the test mixed aqueous solutions with different concentrations of glucose and salt were prepared by using the pure water. The time-resolved photoacoustic signals and photoacoustic peak-to-peak values of mixed aqueous solutions with different concentrations of glucose and salt were acquired with the average times of 128. Results show that the photoacoustic peak-to-peak values of mixed aqueous solutions increase with the increase of glucose concentration and salt concentration. At the same time, the ultrasonic velocity in the mixed aqueous solutions increases with the increase of glucose and salt concentrations. To better predict the glucose concentration in the mixed aqueous solutions, a kind of modified glucose concentration prediction models combined the photoacoustic peak-to-peak values with the ultrasonic velocity were established under the different concentrations of salt. The root-mean-square error (RMSE) of models were obtained and compared with the individual models of photoacoustic peak-to-peak value or the ultrasonic velocity. The prediction results show that the prediction RMSE values of modified model are less than that of the individual models, the RMSE value of predicted glucose concentration under 100mg/dl concentration of salt is about 8.75mg/dl.

Paper Details

Date Published: 18 December 2019
PDF: 9 pages
Proc. SPIE 11337, AOPC 2019: Optical Spectroscopy and Imaging, 113370C (18 December 2019); doi: 10.1117/12.2542222
Show Author Affiliations
Zhong Ren, Jiangxi Science and Technology Normal Univ. (China)
Guodong Liu, Jiangxi Science and Technology Normal Univ. (China)


Published in SPIE Proceedings Vol. 11337:
AOPC 2019: Optical Spectroscopy and Imaging
Jin Yu; Zhe Wang; Vincenzo Palleschi; Mengxia Xie; Yuegang Fu, Editor(s)

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