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Plots of baseline-subtracted Raman spectra from formic acid decomposition experiments with (a) Raman probe in cold zone, (b) Raman probe in hot zone at 365 °C, (c) Raman probe in hot zone at 380 °C, and (d) Raman probe in hot zone at 400 °C. Significant reduction in signal intensity appears to be due to temperature-dependent optical effects, which significantly complicate quantitative spectroscopy.
