Fig. 2 | Nature Communications

Fig. 2

From: Highly selective detection of methanol over ethanol by a handheld gas sensor

Fig. 2

Single and mixed analyte responses without and with separation column. Response of the methanol detector a, b without and c, d with separation column to 10 s exposures of 5 ppm hydrogen (purple line), methanol (red line), ethanol (blue line), and acetone (green line) as well as their mixture (black line in b and d) at 50% RH and 25 mL min−1 total flow rate. Also given are the corresponding retention times (tR, dashed lines, for hydrogen tR = 0 min as it is not retained). Note the different ordinate scale between a, b and c, d. The presence of the polymer sorbent packed bed upstream of the Pd-doped SnO2 sensor facilitates the separation of the mixture components

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