Abstract
This study aimed to evaluate the selectivity of substance identification in systematic toxicological analysis (STA) through analysis of 61 drugs by high-performance liquid chromatography coupled with diode array detection (HPLC–DAD). Substance identification was based on the comparison of UV spectra and relative retention time (RRT) with reference compounds stored in the database. Discrimination power (DP) and mean list length (MLL) were used to assess the selectivity of UV spectra and RRT for the identification of unknown substances. DP and MLL were 0.9995 and 1.033, respectively, when both UV spectra and RRT were taken into account. These findings demonstrate that when combining UV spectra and RRT, HPLC–DAD constitutes a reliable and inexpensive method for substance identification in STA. Application to actual samples was demonstrated as well.
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References
de Zeeuw RA (1997) Drug screening in biological fluids. The need for a systematic approach. J Chromatogr B Biomed Sci Appl 689:71–79
Meyer MR, Peters FT, Maurer HH (2010) Automated mass spectral deconvolution and identification system for GC-MS screening for drugs, poisons, and metabolites in urine. Clin Chem 56:575–584
Versace F, Sporkert F, Mangin P, Staub C (2012) Rapid sample pre-treatment prior to GC-MS and GC-MS/MS urinary toxicological screening. Talanta 101:299–306
Oberacher H, Schubert B, Libiseller K, Schweissgut A (2013) Detection and identification of drugs and toxicants in human body fluids by liquid chromatography-tandem mass spectrometry under data-dependent acquisition control and automated database search. Anal Chim Acta 770:121–131
Broecker S, Pragst F, Bakdash A, Herre S, Tsokos M (2011) Combined use of liquid chromatography-hybrid quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) and high performance liquid chromatography with photodiode array detector (HPLC-DAD) in systematic toxicological analysis. Forensic Sci Int 212:215–226
Marquet P (2012) LC-MS vs. GC-MS, online extraction systems, advantages of technology for drug screening assays. Methods Mol Biol 902:15–27
Pragst F, Herzler M, Erxleben BT (2004) Systematic toxicological analysis by high-performance liquid chromatography with diode array detection (HPLC-DAD). Clin Chem Lab Med 42:1325–1340
Zhang Y, Xie WP, Chen CH, Lin L (2011) Rapid screening for 61 central nervous system drugs in plasma using weak cation exchange solid-phase extraction and high performance liquid chromatography with diode array detection. Afr J Pharm Pharmaco 5:706–720
Zhang Y, Chen C, Lin L, Chen Y (2009) Determination of 61 central nervous system drugs in plasma by protein precipitation-high performance liquid chromatography. Se Pu 27:787–793
De Zeeuw RA, Hartstra J, Franke JP (1994) Potential and pitfalls of chromatographic techniques and detection modes in substance identification for systematic toxicological analysis. J Chromatogr A 674:3–13
Herzler M, Herre S, Pragst F (2003) Selectivity of substance identification by HPLC-DAD in toxicological analysis using a UV spectra library of 2682 compounds. J Anal Toxicol 27:233–242
Bogusz M, Erkens M (1994) Reversed-phase high-performance liquid chromatographic database of retention indices and UV spectra of toxicologically relevant substances and its interlaboratory use. J Chromatogr A 674(1–2):97–126
Yu Y, Yang W, Gao Z, Lam MHW, Liu X, Wang L, Yu H (2008) RP-HPLC measurement and quantitative structure–property relationship analysis of the n-octanol–water partitioning coefficients of selected metabolites of polybrominated diphenyl ethers. Environ Chem 5:332–339
Demme U, Ahrens B, Klein A (2001) Discriminating power nearly one—ion-trap GC-MS as an ideal tool for STA. In: Rasanen I (ed) Proceedings of the 38th Meeting of TIAFT. Tallina Raamatutrükikoja OÜ, Helsinki, pp 19–26
Marquet P (2002) Is LC-MS suitable for a comprehensive screening of drugs and poisons in clinical toxicology? Ther Drug Monit 24:125–133
Saint-Marcoux F, Lachatre G, Marquet P (2003) Evaluation of an improved general unknown screening procedure using liquid chromatography-electrospray-mass spectrometry by comparison with gas chromatography and high-performance liquid-chromatography–diode array detection. J Am Soc Mass Spectrom 14:14–22
Yang Y, Liu P (2001) Experiences in giving emergency treatment 2 cases poisoned by clozapine. Chin J Pharmacoepidemiol 10:50–51
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The work was supported by the Research Fund of Fujian Public Health Bureau (2007-1-27) and Quanzhou Science and Technology Bureau (2008Z24).
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Zhang, Y., Xie, WP. Evaluation of HPLC–DAD Selectivity by Discrimination Power and Mean List Length for the Identification of Unknown Drugs. Chromatographia 77, 1613–1622 (2014). https://doi.org/10.1007/s10337-014-2769-7
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DOI: https://doi.org/10.1007/s10337-014-2769-7