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STUDY OF FAST DETECTION OF PCBs IN CYCLINA SINENSIS(GMELIN) BASED ON ELECTRONIC NOSE
Author(s): 
Pages: 1103-1108
Year: Issue:  5
Journal: Oceanologia et Limnologia Sinica

Keyword:  PCBssoft tissue of Cyclina sinensiselectronic noseHS-SPME-GC-MS;
Abstract: To establish a simple and quick detection technology of PCBs in seafood, polychlorinated biphenyls(PCBs) in Cyclina sinensis(Gmelin) was detected by the electronic nose, and the results were verified by HS-SPME-GC-MS(headspace solid-phase microextraction-gas chromatography-mass spectrometer). The results showed that C. sinensis in different concentrations PCB15 within 72 h, and 144 h could be identified by electronic nose using LDA and PCA analysis. The seawater could also be identified by electronic nose. At the same time, with the extension of treatment time, discrimination became more obviously, the greater the discrimination, the greater contribution rate. Euclidean distance, Mahalanobis distance, discriminant function method and correlation were also used on sample identification with different concentrations of PCB15. The total rate of four methods were all more than 80%, and the samples could be accurately verified. The results of HS-SPME-GC-MS detection showed that the lowest detection limit of PCBs concentration reached to 0.5μg/L, and the estimated value is 0.05μg/L which was detected by electronic nose.
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