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Analysis of new designer drugs and common drugs of abuse in urine by a combined targeted and untargeted LC-HR-QTOFMS approach
Analytical and Bioanalytical Chemistry ( IF 4.3 ) Pub Date : 2014-05-15 , DOI: 10.1007/s00216-014-7825-5
Michael Paul , Josef Ippisch , Christian Herrmann , Susanne Guber , Wolfgang Schultis

The development of a liquid chromatography high-resolution mass spectrometry quadrupole-time-of-flight (LC-HRMS-QTOF) method for the analysis of new stimulant designer drugs (e.g. phenethylamine, amphetamine, cathinone and piperazine derivatives) and common drugs of abuse (e.g. ketamine and ritalinic acid) in urine is reported. Sample preparation was carried out by a fast and convenient salting-out liquid-liquid extraction (SALLE) procedure. The data was generated by a preferred target list combined with untargeted data-dependent acquisition recording additional sample information (i.e. not listed metabolites of target compounds or not database-stored drugs). The identification is realised by a fully automated data extraction algorithm, taking into account accurate mass spectra, fragment masses and retention times. Method validation comprised selectivity, linearity, accuracy, stability, determination of the limit of detection (LOD) and limit of quantification (LOQ) and evaluation of matrix effects and recoveries for a total set of 39 compounds. Acceptable quantitative results were obtained for 35 of the 39 analytes. Exemplarily, application of the additional untargeted data-dependent acquisition mode enabled the identification of metabolites of the preferred target list compounds ketamine and methylenedioxypyrovalerone (MDPV) without use of reference standards. Therefore, improvement of the database is feasible with every positive library hit. The approach presented here provides a very useful tool for the combined targeted and untargeted analysis of drugs of abuse in biological matrices such as urine.



中文翻译:

结合靶向和非靶向LC-HR-QTOFMS方法分析尿液中的新设计药物和常见滥用药物

液相色谱高分辨率质谱四极杆飞行时间(LC-HRMS-QTOF)方法的开发,用于分析新的兴奋剂设计药物(例如苯乙胺,苯丙胺,卡西酮和哌嗪衍生物)和常见滥用药物据报道尿液中有氯胺酮(如氯胺酮和利他宁酸)。通过快速便捷的盐析液-液萃取(SALLE)程序进行样品制备。数据是由首选目标列表与记录其他样品信息(即未列出目标化合物的代谢物或未存储数据库的药物)的非目标数据相关的采集相结合而生成的。考虑到准确的质谱图,碎片质量和保留时间,可通过全自动数据提取算法实现识别。方法验证包括选择性,线性,准确性,稳定性,确定检测限(LOD)和定量限(LOQ)以及评估总共39种化合物的基质效应和回收率。39种分析物中的35种获得了可接受的定量结果。示例性地,应用附加的非靶向的数据依赖性采集模式使得能够在不使用参考标准的情况下鉴定优选的靶标化合物氯胺酮和亚甲基二氧基吡咯烷酮(MDPV)的代谢物。因此,对每一个积极的图书馆命中,数据库的改进都是可行的。此处介绍的方法为对生物基质(如尿液)中的滥用药物进行有针对性和无目标性的组合分析提供了非常有用的工具。确定总共39种化合物的检出限(LOD)和定量限(LOQ)以及评估基质效应和回收率。39种分析物中的35种获得了可接受的定量结果。示例性地,应用附加的非靶向的数据依赖性采集模式使得能够在不使用参考标准的情况下鉴定优选的靶标化合物氯胺酮和亚甲基二氧基吡咯烷酮(MDPV)的代谢物。因此,对每一个积极的图书馆命中,数据库的改进都是可行的。此处介绍的方法为对生物基质(如尿液)中的滥用药物进行有针对性和无目标性的组合分析提供了非常有用的工具。确定总共39种化合物的检出限(LOD)和定量限(LOQ)以及评估基质效应和回收率。39种分析物中的35种获得了可接受的定量结果。示例性地,应用附加的非靶向的数据依赖性采集模式使得能够在不使用参考标准的情况下鉴定优选的靶标化合物氯胺酮和亚甲基二氧基吡咯烷酮(MDPV)的代谢物。因此,对每一个积极的图书馆命中,数据库的改进都是可行的。此处介绍的方法为对生物基质(如尿液)中的滥用药物进行有针对性和无针对性的组合分析提供了非常有用的工具。

更新日期:2014-05-15
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