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. 2022 Jul 14;37(8):3067–3084. doi: 10.1007/s10103-022-03610-3

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Fig. 5 — Biomarker spectra (blue: measurement; red: NIST; yellow: PNNL) was measured at a concentration of 100 ppm in nitrogen at atmospheric conditions (294 K, 1024 hPa) [92]