In order to realize the identification of terpene volatiles in citrus,the main terpene volatiles in citrus,i.e.,d-limonene,α-pinene and myrcene,are selected as target molecules. The corresponding molecularly imprinted polymer(MIP)is prepared by a bulk polymerization method,using MAA as a functional monomer,EGDMA as a cross-linking agent,and AIBN as an initiator. The MIP powder is combined with a quartz crystal microbalance(QCM)electrode using polyvinyl chloride to make a MIP-QCM sensor,and the three sensors form a sensing array. The gas distri...