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Detection of aromatic compounds in artificial gasoline with hybrid surface acoustic wave sensor array and a short packed column (SAW-GC)

A self-developed and newly re-designed SAW sensor system composed by 4 polymer coated and 4 differently modified nano-diamond coated SAW sensors was applied to measure aromatic compounds in gasoline in a low cost, fast and easy way. An additional short packed column at system inlet improved the selectivity. The short packed column separated selectively the aromatics from the rest of the sample. Since all employed sensors show linearity for the concentration range tested an easy quantification of single fuel components was possible.