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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: Volatile organic compounds in ventilated critical care patients: a systematic evaluation of cofactors

Fig. 2

Three-dimensional ion-mobility spectrometry chromatograms for patients (a), inspired gas from a ventilator (b), oxygen from central gas supply (c) and ambient air of an intensive care unit (d). Volatile organic compounds are characterized according to retention time, drift time, and peak intensity in the chromatogram. Interestingly, most volatiles in inspired gas (b) exhibit similar small drift times and thus, are depicted merely at the edge in the IMS-chromatogram

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BMC Pulmonary Medicine

ISSN: 1471-2466

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