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Determination of Synthetic Cathinones in Urine Using Gas Chromatography-Mass Spectrometry Techniques.
J Anal Toxicol. 2016 Jan-Feb; 40(1):12-6.JA

Abstract

In recent years, the abuse of synthetic cathinones has increased considerably. This study proposes a method, based on gas chromatography/mass spectrometry (GC-MS), to analyze and quantify six synthetic cathinones in urine samples: mephedrone (4-MMC), methylone (bk-MDMA), butylone, ethylone, pentylone and methylenedioxypyrovalerone (MDPV). In our procedure, the urine samples undergo solid-phase extraction (SPE) and derivatization prior to injection into the GC-MS device. Separation is performed using a HP-5MS capillary column. The use of selective ion monitoring (SIM mode) makes it is good sensitivity in this method, and the entire analysis process is within 18 min. In addition, the proposed method maintains linearity in the calibration curve from 50 to 2,000 ng/mL (r(2) > 0.995). The limit of detection of this method is 5 ng/mL, with the exception of MDPV (20 ng/mL); the limit of quantification is 20 ng/mL, with the exception of MDPV (50 ng/mL). In testing, the extraction performance of SPE was between 82.34 and 104.46%. Precision and accuracy results were satisfactory <15%. The proposed method was applied to six real urine samples, one of which was found to contain 4-MMC and bk-MDMA. Our results demonstrate the efficacy of the proposed method in the identification of synthetic cathinones in urine, with regard to the limits of detection and quantification. This method is highly repeatable and accurate.

Authors+Show Affiliations

Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan.Food and Drug Administration, Ministry of Health and Welfare, Taipei, Taiwan eteredu@gmail.com.

Pub Type(s)

Evaluation Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

26410364

Citation

Hong, Wei-Yin, et al. "Determination of Synthetic Cathinones in Urine Using Gas Chromatography-Mass Spectrometry Techniques." Journal of Analytical Toxicology, vol. 40, no. 1, 2016, pp. 12-6.
Hong WY, Ko YC, Lin MC, et al. Determination of Synthetic Cathinones in Urine Using Gas Chromatography-Mass Spectrometry Techniques. J Anal Toxicol. 2016;40(1):12-6.
Hong, W. Y., Ko, Y. C., Lin, M. C., Wang, P. Y., Chen, Y. P., Chiueh, L. C., Shih, D. Y., Chou, H. K., & Cheng, H. F. (2016). Determination of Synthetic Cathinones in Urine Using Gas Chromatography-Mass Spectrometry Techniques. Journal of Analytical Toxicology, 40(1), 12-6. https://doi.org/10.1093/jat/bkv108
Hong WY, et al. Determination of Synthetic Cathinones in Urine Using Gas Chromatography-Mass Spectrometry Techniques. J Anal Toxicol. 2016 Jan-Feb;40(1):12-6. PubMed PMID: 26410364.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of Synthetic Cathinones in Urine Using Gas Chromatography-Mass Spectrometry Techniques. AU - Hong,Wei-Yin, AU - Ko,Ya-Chun, AU - Lin,Mei-Chih, AU - Wang,Po-Yu, AU - Chen,Yu-Pen, AU - Chiueh,Lih-Ching, AU - Shih,Daniel Yang-Chih, AU - Chou,Hsiu-Kuan, AU - Cheng,Hwei-Fang, Y1 - 2015/09/25/ PY - 2015/9/28/entrez PY - 2015/9/28/pubmed PY - 2016/8/27/medline SP - 12 EP - 6 JF - Journal of analytical toxicology JO - J Anal Toxicol VL - 40 IS - 1 N2 - In recent years, the abuse of synthetic cathinones has increased considerably. This study proposes a method, based on gas chromatography/mass spectrometry (GC-MS), to analyze and quantify six synthetic cathinones in urine samples: mephedrone (4-MMC), methylone (bk-MDMA), butylone, ethylone, pentylone and methylenedioxypyrovalerone (MDPV). In our procedure, the urine samples undergo solid-phase extraction (SPE) and derivatization prior to injection into the GC-MS device. Separation is performed using a HP-5MS capillary column. The use of selective ion monitoring (SIM mode) makes it is good sensitivity in this method, and the entire analysis process is within 18 min. In addition, the proposed method maintains linearity in the calibration curve from 50 to 2,000 ng/mL (r(2) > 0.995). The limit of detection of this method is 5 ng/mL, with the exception of MDPV (20 ng/mL); the limit of quantification is 20 ng/mL, with the exception of MDPV (50 ng/mL). In testing, the extraction performance of SPE was between 82.34 and 104.46%. Precision and accuracy results were satisfactory <15%. The proposed method was applied to six real urine samples, one of which was found to contain 4-MMC and bk-MDMA. Our results demonstrate the efficacy of the proposed method in the identification of synthetic cathinones in urine, with regard to the limits of detection and quantification. This method is highly repeatable and accurate. SN - 1945-2403 UR - https://www.unboundmedicine.com/medline/citation/26410364/Determination_of_Synthetic_Cathinones_in_Urine_Using_Gas_Chromatography_Mass_Spectrometry_Techniques_ L2 - https://academic.oup.com/jat/article-lookup/doi/10.1093/jat/bkv108 DB - PRIME DP - Unbound Medicine ER -