Determination of six amphetamine-type stimulants in urine samples using electro-enhanced single drop microextraction-gas chromatography

doi:10.3724/SP.J.1123.2018.03021

Abstract

Abstract:

A method for the simultaneous determination of six amphetamine-type stimulants (ATSs) in urine by electro-enhanced single drop microextraction-gas chromatography (EE-SDME-GC) with a flame ionization detector (FID) was developed. The influences of the EE-SDME parameters on the extraction efficiencies were investigated. The 5 mL-samples at pH 7 were extracted with 2 μL dichloromethane for 3 min under an applied potential of -2.5 V. The analysis was performed on a HP-5 capillary column (30 m×0.32 mm×0.25 μm) using a flame ionization detector. The six ATSs were linear in the range of 20-1000 μg/L with correlation coefficients (r) between 0.989 and 0.997. The limits of detection (S⁄N=3) of the six ATSs ranged from 3.2 to 7.6 μg/L. The recoveries of the six ATSs in the spiked urine samples were 91.6%-111.2%, and the relative standard deviations were 2.9%-6.2% (n=3) at three spiked levels of 50, 100 and 500 μg/L. This method was rapid, sensitive, reliable, easily-operated and environment-friendly for the determination of the ATSs in urine samples.

Key words: amphetamine-type stimulants (ATSs), electro-enhancement (EE), gas chromatography (GC), single drop microextraction (SDME), urine

CLC Number:

O658

SONG Aiying, YANG Jing. Determination of six amphetamine-type stimulants in urine samples using electro-enhanced single drop microextraction-gas chromatography[J]. Chinese Journal of Chromatography, 2018, 36(8): 803-808.

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