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Reference type: Journal
Authors: Djozan D, Farajzadeh MA, Sorouraddin SM, Baheri T
Article Title: Determination of methamphetamine, amphetamine and ecstasy by inside-needle adsorption trap based on molecularly imprinted polymer followed by GC-FID determination.
Publication date: 2012
Journal: Microchimica Acta
Volume: 179
Issue: (3)
Page numbers: 209-217.
DOI: 10.1007/s00604-012-0879-1

Abstract: We have developed a solvent-free and sensitive method for the identification and quantification of methamphetamine (MAMP), amphetamine (AMP) and ecstasy (MDMA) in human urine. It is based on the use of an inside-needle adsorption trap (INAT) and a molecularly imprinted polymer (MIP). The MAMP-MIP layer was coated on the internal surface of a hollow stainless steel needle, which was oxidized and silylated. It was used as the extraction needle. A model solution containing the drugs was slowly passed through the extraction needle. After adsorption of the analytes, the needle was directly transferred to the injector of a gas chromatograph, where the analytes were thermally desorbed, separated by GC, and detected with a flame ionization detector. The method does not require an extraction solvent, is fast and simple. The linear range of the calibration graphs are rather wide, and the limit of detection and the limit of quantification (LOQ) for MAMP are 12 and 40 ng mL-1 , respectively. The relative standard deviations (RSD%) for six repeated experiments (at 500 ng mL-1 of MAMP) is 4.9 %. The relative recoveries obtained for MAMP in spiked human urine samples are in the range of 81 - 93 %
Template and target information: methamphetamine, MAMP, amphetamine, AMP, ecstasy, MDMA
Author keywords: Extraction needle, molecularly imprinted polymer, Solid phase dynamic extraction, gas chromatography, Methamphetamine

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