title: Determination of aldehydes in rainwater using micro-solid-phase extraction and high-performance liquid chromatography.
abstract: A simple and rapid extraction procedure was developed for determining aldehydes in rainwater samples. This extraction technique involved the use of micro-solid-phase extraction in which the sorbent was held within a polypropylene membrane envelope, followed by high-performance liquid chromatographic analysis. Aldehydes such as formaldehyde, acetaldehyde, propionaldehyde and valeraldehyde were used as model compounds. Extraction conditions were optimized. The method linearity ranged between 0.5 and 50 μgl(-1) with the correlation coefficient of 0.987-0.999. The relative standard deviations (RSDs) of the method ranged from 7 to 12%. Method detection limits were in the range of 0.07-0.15 μgl(-1), which is lower than those previously reported for solid-phase microextraction combined with gas chromatography-mass spectrometric techniques. The proposed extraction technique was used for determination of aldehydes in rainwater samples to demonstrate the applicability of the method.
authors.affiliation: Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
authors.forename: Chanbasha
authors.initials: C
authors.lastname: Basheer
authors.forename: Shruti
authors.initials: S
authors.lastname: Pavagadhi
authors.forename: Huixin
authors.initials: H
authors.lastname: Yu
authors.forename: Rajasekhar
authors.initials: R
authors.lastname: Balasubramanian
authors.forename: Hian Kee
authors.initials: HK
authors.lastname: Lee
mesh_terms: D000447:Aldehydes / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006834:Hydrazines / Q000737:chemistry; D016014:Linear Models; D011891:Rain / Q000737:chemistry*; D012680:Sensitivity and Specificity; D052617:Solid Phase Microextraction / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D000447:Aldehydes; D006834:Hydrazines; D014874:Water Pollutants, Chemical; C446799:dinitrophenylhydrazine