Optimization of separation and online sample concentration of N,N‐dimethyltryptamine and related compounds using MEKC
Journal of Separation Science – January 09, 2009
Source: OpenAlex
Summary
Detection of tryptamines like DMT in urine has been significantly enhanced using innovative chromatography techniques. With micellar electrokinetic chromatography (MEKC), detection limits improved from 1.0-1.8 μg/mL to as low as 1.3-2.7 ng/mL when employing advanced online sample concentration methods. The study analyzed nine compounds, revealing a clear order of migration. A practical application included spiking urine samples, demonstrating the method's effectiveness for identifying psychedelics in drug studies, showcasing the potential for microfluidic and catalytic techniques in chemistry.
Abstract
Abstract The optimal separation conditions and online sample concentration for N , N ‐dimethyltryptamine (DMT) and related compounds, including α‐methyltryptamine (AMT), 5‐methoxy‐AMT (5‐MeO‐AMT), N , N ‐diethyltryptamine (DET), N , N ‐dipropyltryptamine (DPT), N , N ‐dibutyltryptamine (DBT), N , N ‐diisopropyltryptamine (DiPT), 5‐methoxy‐DMT (5‐MeO‐DMT), and 5‐methoxy‐ N , N ‐DiPT (5‐MeO‐DiPT), using micellar EKC (MEKC) with UV‐absorbance detection are described. The LODs (S/N = 3) for MEKC ranged from 1.0 ˜ 1.8 μg/mL. Use of online sample concentration methods, including sweeping‐MEKC and cation‐selective exhaustive injection‐sweep‐MEKC (CSEI‐sweep‐MEKC) improved the LODs to 2.2 ˜ 8.0 ng/mL and 1.3 ˜ 2.7 ng/mL, respectively. In addition, the order of migration of the nine tryptamines was investigated. A urine sample, obtained by spiking urine collected from a human volunteer with DMT, was also successfully examined.