Journal Article

Print(0)

Journal of chromatography.A

J.Chromatogr.A

14-Sep

1164

2-Jan

10

17

LR: 20090115; JID: 9318488; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Tea); 2007/04/02 [received]; 2007/06/20 [revised]; 2007/06/27 [accepted]; 2007/07/01 [aheadofprint]; ppublish

Netherlands

0021-9673; 0021-9673

PMID: 17628570

eng

Journal Article; Research Support, Non-U.S. Gov't; IM

S0021-9673(07)01144-2 [pii]

Unknown(0)

17628570

A sensitive and solvent-free procedure for the determination of 11 polycyclic aromatic hydrocarbons in tea infusions using headspace solid-phase microextraction coupled to liquid chromatography with fluorimetric detection is described. A medium polarity polydimethylsiloxane-divinylbenzene 60 microm fiber was found to be suitable for extraction at 90 degrees C and with an extraction time of 60 min under continuous stirring. Desorption was carried out using the static mode for 5 min. Under the optimized conditions, when 1.75 g of tea sample were extracted with boiling water, the precision ranged from 4 to 16% (RSD) and detection limits were between 4 and 145 ngL(-1), depending on the compound. The reliability of the procedure was corroborated by means of GC-MS. The results obtained for a standard reference material were within the range indicated by the supplier.

Chromatography, Liquid/methods, Polycyclic Hydrocarbons, Aromatic/analysis/chemistry, Reproducibility of Results, Solid Phase Microextraction/methods, Tea/chemistry

Vinas,P., Campillo,N., Aguinaga,N., Perez-Canovas,E., Hernandez-Cordoba,M.

Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071, Murcia, Spain.

20070701

http://vp9py7xf3h.search.serialssolutions.com/?charset=utf-8&pmid=17628570

2007