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dc.contributor.authorLi, Xiu-Ying
dc.contributor.authorLi, Na
dc.contributor.authorLuo, He-Dong
dc.contributor.authorLin, Li-Rong
dc.contributor.author林丽榕
dc.contributor.authorZou, Zhe-Xiang
dc.contributor.authorJia, Yu-Zhu
dc.contributor.authorLi, Yao-Qun
dc.contributor.author李耀群
dc.date.accessioned2012-03-05T02:05:11Z
dc.date.available2012-03-05T02:05:11Z
dc.date.issued2011-04-26
dc.identifier.citationJ. Agric. Food Chem., 2011, 59 (11):5899–5905zh_CN
dc.identifier.issn0021-8561
dc.identifier.urihttp://dx.doi.org/doi:10.1021/jf104873g
dc.identifier.uriWOS:000291074700015
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/11617
dc.description.abstractMany polycyclic aromatic hydrocarbons (PAHs) are carcinogenic, and some have been reported to be present in tea. People can be exposed to PAHs through tea consumption. Therefore, there is real importance for the determination of PAHs in tea. Because of the complex matrix of tea, it is hard to detect PAHs in tea without cleanup and chromatographic separation procedures. In this research, for the first time, a novel synchronous fluorescence spectroscopic approach coupling nonlinear variable-angle synchronous and matrix-isopotential synchronous scanning modes has been developed for the rapid determination of benzo(a)pyrene (BaP), benzo(k)fluoranthene (BkF), and anthracene (AN) in tea with simple microwave-assisted pretreatment of samples. This novel technique is able to resolve the spectra of the three PAHs well, even with interference from other EPA PAHs. The detection limits for BaP, BkF, and AN in tea were 0.18-0.28, 0.55-0.89, and 0.64-3.58 mu g/kg, respectively, depending on various teas, with satisfactory recoveries ranging from 77.1 to 116%. The relative standard deviations achieved for BaP, BkF, and AN were 1.5, 6.6, and 8.5% for green tea; 2.9, 7.4, and 2.1% for oolong tea; and 5.6, 5.4, and 5.8% for black tea, respectively. Our results showed good correlation with those of gas chromatography mass spectrometry. The approach developed is simple, reliable, and cost-efficient, providing an attractive alternative for the rapid selective screening of PAHs in tea.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China[20975084]; Science and Technology Program of Fujian Province[2009Y0046]; National Basic Research Program of China (973 Program)[2007CB935600]; Science and Technology Program of Xiamen[3502z20077072]zh_CN
dc.language.isoenzh_CN
dc.publisherAMER CHEMICAL SOCzh_CN
dc.subjectSynchronous fluorescence spectroscopyzh_CN
dc.subjectmicrowave-assisted extractionzh_CN
dc.subjectteazh_CN
dc.subjectbenzo(a)pyrenezh_CN
dc.subjectbenzo(k)fluoranthenezh_CN
dc.subjectanthracenezh_CN
dc.titleA Novel Synchronous Fluorescence Spectroscopic Approach for the Rapid Determination of Three Polycyclic Aromatic Hydrocarbons in Tea with Simple Microwave-Assisted Pretreatment of Samplezh_CN
dc.typeArticlezh_CN


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