Trimethylamine is a good target for the assay of meat freshness,and also of clinical interest.Therefore,detection of trimethylamine is very meaningful.For this reason,we prepared polypyrrole by emulsion polymerization method,and coated it onto a quartz crystal which was used as the sensing QCM.The change of frequency difference between sensing QCM and reference QCM was used to monitor the atmosphere.When the sensor was exposed to trimethylamine vapor at room temperature,it responded rapidly and obviously.Th...
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