Simultaneous Quantitative Determination of Synthetic Cathinone Enantiomers in Urine and Plasma Using GC-NCI-MS

Table 5

Recovery measurements expressed in percent errors for three different concentrations of the cathinone-related compounds spiked in urine matrix.

		Plasma (error %)						Urine (error %)
		20 µg/L		60 µg/L		100 µg/L		20 µg/L		60 µg/L		100 µg/L
		E1	E2	E1	E2	E1	E2	E1	E2	E1	E2	E1	E2
1	4-FMC	2.63	5.32	2.48	0.62	2.45	0.26	0.8	10.57	9.49	8.47	1.24	0.68
2	4-FEC	0.17	4.89	5.8	3.1	2.19	1.6	9.28	5.31	2.38	9.21	0.1	0.61
3	Nor-mephedrone	5.64	1.94	3.25	7.64	1.69	2.64	8.67	7.48	1.82	4.48	1.71	0.69
4	Buphedrone	3.18	5.94	0.79	3.78	0.06	1.71	9.12	5.58	4.84	4.88	1.9	0.72
5	3-MMC	1.03	1.47	0.87	0.55	0.74	1.4	3.91	3.02	4.91	3.54	0.25	0.91
6	3-Methylbuphedrone	1.26	7.1	6.41	9.61	4.03	1.71	3.71	9.13	4.09	0.15	1.54	1.77
7	4-Methylbuphedrone	0.69	5.64	1.77	0.73	2.56	1.9	1.15	0.42	0.97	2.54	2.3	4.01
8	3-EMC	0.65	5.73	2.19	4.7	0.56	0.52	3.61	1.27	4.86	8.04	1.55	3.32
9	3-EEC	8.7	7.62	2.22	1.06	0.42	0.34	5.69	4.88	2.1	4.18	2.44	2.22
10	4-EEC	4.38	5.72	7.91	5.68	2.01	2.32	2.37	12.25	0.66	6.64	0.9	1.52
11	3,4-DMEC	4.36	3.85	2.2	2.46	1.89	2.93	9.61	7.83	7.35	8.05	2.07	1.64
12	2,3-MDMC	9.98	8.22	6.17	8.34	1.97	3.51	7.25	10.31	9.45	6.68	0.94	0.54
13	Butylone	1.41	10.98	2.05	5.97	1.62	1.98	2.93	3.78	8.95	8.38	0.83	0.24
14	Pentylone	5.8	10.43	1.07	1.47	1.68	0.22	9.54	0.05	0.14	3.25	2.52	3.14