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- W4245477512 abstract "Trace methane detection in the parts per million range is reported using a novel detection scheme based on optical emission spectra from low temperature atmospheric pressure microplasmas. These bright low-cost plasma sources were operated under non-equilibrium conditions, producing spectra with a complex and variable sensitivity to trace levels of added gases. A data-driven machine learning approach based on Partial Least Squares Discriminant Analysis (PLS-DA) was implemented for CH4 concentrations up to 100 ppm in He, to provide binary classification of samples above or below a threshold of 2 ppm. With a low-resolution spectrometer and a custom spectral alignment procedure, a prediction accuracy of 98% was achieved, demonstrating the power of machine learning with otherwise prohibitively complex spectral analysis. This work establishes proof of principle for low cost and high-resolution trace gas detection with the potential for field deployment and autonomous remote monitoring.<br>" @default.
- W4245477512 created "2022-05-12" @default.
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- W4245477512 date "2020-02-26" @default.
- W4245477512 modified "2023-09-28" @default.
- W4245477512 title "Detecting Trace Methane Levels with Plasma Optical Emission Spectroscopy and Supervised Machine Learning" @default.
- W4245477512 doi "https://doi.org/10.26434/chemrxiv.11898363.v1" @default.
- W4245477512 hasPublicationYear "2020" @default.
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