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논문 기본 정보

자료유형
학술저널
저자정보
Yeong Eun Sim (Supreme Prosecutors" Office) Beom Jun Ko (Supreme Prosecutors" Office) Jin Young Kim (Supreme Prosecutors" Office)
저널정보
한국분석과학회 분석과학 분석과학 제32권 제5호
발행연도
2019.10
수록면
163 - 172 (10page)

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초록· 키워드

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Methamphetamine (MA) is currently the most abused illicit drug in Korea and its major metabolite is amphetamine (AP). As MA exist as two enantiomers with the different pharmacological properties, it is necessary to determine their respective amounts in a sample. Thus a chiral stationary phase liquid chromatography-tandem mass spectrometric (LC-MS/MS) method was developed for identification and quantification of d-MA, l-MA, d-AP, and l-AP in human urine. Urine sample (200 μL) was diluted with pure water and purified using solid-phase extraction (SPE) cartridge. A 5-μL aliquot of SPE treated sample solution was injected into LC-MS/MS system. Chiral separation was carried out on the Astec Chirobiotic V2 column with an isocratic elution for each enantiomer. Identification and quantification of enantiomeric MA and AP was performed using multiple reaction monitoring (MRM) detection mode. Linear regression with a 1/x² as the weighting factor was applied to generate a calibration curve. The linear ranges were 25-1000 ng/mL for all compounds. The intra- and inter-day precisions were within 3.6 %, while the intra- and inter-day accuracies ranged from -5.4 % to 11.8 %. The limits of detection were 2.5 ng/mL (d-MA), 3.5 ng/mL (l-MA), 7.5 ng/mL (d-AP), and 7.5 ng/mL (l-AP). Method validation parameters such as selectivity, matrix effect, and stability were evaluated and met acceptance criteria. The applicability of the method was tested by the analysis of genuine forensic urine samples from drug abusers. d-MA is the most common compound found in urine and mainly used by abusers.

목차

Abstract
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

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