Research on anti-interference technology of groundwater heavy metal fluorescence detection device

Bowen Sun; Pei Zhang; Bin Chen; Guanghui Wang; Jing Zhu

doi:10.1117/12.3055650

22 January 2025 Research on anti-interference technology of groundwater heavy metal fluorescence detection device

Bowen Sun, Pei Zhang, Bin Chen, Guanghui Wang, Jing Zhu

Author Affiliations +

Proceedings Volume 13520, 7th Optics Young Scientist Summit (OYSS 2024); 135200B (2025) https://doi.org/10.1117/12.3055650
Event: Seventh Optics Young Scientist Summit (OYSS 2024), 2024, Nanjing, China

Abstract

Heavy metals in liquid seriously harm the environment and threaten human health. The fluorescence detection system based on fluorescence probe method has the advantages of small size and fast detection speed, which is helpful to understand the pollution status and environmental risk of groundwater and provide scientific basis for liquid environment treatment. However, long time laser irradiation of fluorescent probe produces photobleaching phenomenon, which weakens the fluorescence signal intensity. The excitation noise in the confocal detection optical path is high, resulting in low signal-to-noise ratio, which cannot meet the requirement of high sensitivity detection. In this paper, the anti-interference technology of groundwater heavy metal fluorescence detection device is studied. The effect of photobleaching and optical noise is avoided by single pulse excitation and noise reduction using dichroic mirror. After applying the improvement, the repeatability error is reduced from 1.59% to 0.23%, while the noise is reduced by 87.5%. The stability of the detection results and the signal-to-noise ratio are significantly improved, so the anti-interference ability of detection device is greatly enhanced.

(2025) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Bowen Sun, Pei Zhang, Bin Chen, Guanghui Wang, and Jing Zhu "Research on anti-interference technology of groundwater heavy metal fluorescence detection device", Proc. SPIE 13520, 7th Optics Young Scientist Summit (OYSS 2024), 135200B (22 January 2025); https://doi.org/10.1117/12.3055650

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