title: Determination of some aldehydes by using solid-phase microextraction and high-performance liquid chromatography with UV detection.
abstract: A new approach has been developed for the extraction and determination of aldehydes such as veratraldehyde, m-nitrobenzaldehyde, cinnamaldehyde, benzaldehyde, and p-chlorobenzaldehyde by using solid-phase microextraction (SPME) and high-performance liquid chromatography with UV detection (HPLC/UV). The method involves adsorption of the aldehydes on polydimethylsiloxane/divinylbenzene-coated fiber, followed by desorption in the desorption chamber of the SPME-HPLC interface, using acetonitrile-water (70 + 30) as the mobile phase; UV detection was at 254 nm. A good separation of 5 aldehydes was obtained on a C18 column. The detection limits of veratraldehyde, m-nitrobenzaldehyde, cinnamaldehyde, benzaldehyde, and p-chlorobenzaldehyde are 25, 41, 13, 12, and 11 pg/mL, respectively, which are about 100 times better than the detection limits for other SPME methods using gas chromatography. The proposed method was validated by determining benzaldehyde in bitter almonds and cinnamaldehyde in cinnamon bark. The recoveries of the 5 analytes were determined by analysis of spiked drinking water.
authors.affiliation: Punjabi University, Department of Chemistry, Patiala-147002, India.
authors.forename: Ashwini
authors.initials: A
authors.lastname: Kumar
authors.forename: Baldev
authors.initials: B
authors.lastname: Singh
authors.forename: Ashok Kumar
authors.initials: AK
authors.lastname: Malik
authors.forename: Dhananjay K
authors.initials: DK
authors.lastname: Tiwary
mesh_terms: D000447:Aldehydes / Q000032:analysis*; D002138:Calibration; D002851:Chromatography, High Pressure Liquid; D002935:Cinnamomum zeylanicum / Q000737:chemistry; D007202:Indicators and Reagents; D024301:Plant Bark / Q000737:chemistry; D027861:Prunus / Q000737:chemistry; D012015:Reference Standards; D012965:Sodium Chloride / Q000032:analysis; D013056:Spectrophotometry, Ultraviolet; D014881:Water Supply / Q000032:analysis
chemical_list: D000447:Aldehydes; D007202:Indicators and Reagents; D012965:Sodium Chloride