کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1203002 1493574 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of benzodiazepines, related pharmaceuticals and metabolites in water by solid-phase extraction and liquid-chromatography–tandem mass spectrometry
ترجمه فارسی عنوان
تعیین بنزودیازپین ها، داروها و متابولیت های مرتبط در آب با استفاده از روش استخراج جامد فاز و کروماتوگرافی مایع، طیف سنج جرمی تاندیم
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Simultaneous determination of 23 benzodiazepines and related compounds.
• Comparison of SPE cartridges and storage conditions.
• Optimization of the final extract volume considering matrix effects.
• LOQs = 0.1–18 ng L−1 for raw wastewater.
• 10 (of the 23) analytes detected in the samples.

This work presents a method for the simultaneous determination of 23 benzodiazepines, metabolites and related pharmaceuticals (zolpidem, methylphenidate and ritalinic acid) by solid-phase extraction (SPE) followed by liquid chromatography–tandem mass spectrometry (LC–MS/MS). Different SPE cartridges were considered: hydrophilic modified reversed-phase (Oasis HLB) and their modified versions containing also a cationic-exchange group (Oasis MCX) or anionic-exchange (Oasis MAX) funcionalities. Stability of analytes and the impact of the final eluate volume on the matrix effects on LC–MS/MS were also considered. In the final method, 100–200 mL of sample are extracted with Oasis MCX (60 mg), eluted with 5 mL of methanol (1.25% NH3) and the eluate concentrated and analyzed by LC–MS/MS. Under these conditions, LOQs were established between 0.1 and 18 ng L−1 for influent wastewater. The use of surrogated deuterated internal standards allows obtaining recoveries in the 84–122% range. Finally the method was applied to determinate the analytes in wastewater and surface water and 10 compounds were detected in the range of 0.5–170 ng L−1, being the ritalinic acid (the main metabolite of methylphenidate) the analyte detected in the highest concentrations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1352, 25 July 2014, Pages 69–79
نویسندگان
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