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Odour Chemistry of Un-derivatised Human Blood

The odour chemistry of blood can be estimated by sorting the amino acids by molecular weight.

The names and concentration range for each acid among three subject age groups can provide an initial estimate of odour intensities. Other physical properties, such as vapour pressure or boiling point could also be used to estimate the chemical signature of blood odours.

The zNose® GC measures the concentration of the odour chemicals directly and retention times for each of the chemicals detected are determined by identifying peaks in the GC column flux. Column flux is computed in real-time by mathematically performing the time derivative of the detector signal.



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