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. 2021 Apr 10;413(13):3551–3560. doi: 10.1007/s00216-021-03306-7

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© The Author(s) 2021

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Fig. 1 — HS-GC-IMS spectrum of the hop sample (a) and the reference standards (b) of the monoterpenes α-pinene (1), β-pinene (2), myrcene (3), and limonene (4) (65–230 ppm)