کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1200185 1493472 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An integrated platform for directly widely-targeted quantitative analysis of feces part I: Platform configuration and method validation
ترجمه فارسی عنوان
یک پلت فرم یکپارچه برای تجزیه و تحلیل به طور مستقیم به طور گسترده ای هدف قرار دادن مدفوع قسمت 1: پیکربندی و اعتبار سنجی روش
کلمات کلیدی
تجزیه و تحلیل مستقیم، مدفوع، امروزه استخراج مایع تحت فشار، کروماتوگرافی جریان متلاطم، کروماتوگرافی مایع کروماتوگرافی با عملکرد بالا - طیف سنج جرمی دو طرفه
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• A new online PLE-TFC-LC–MS/MS platform was configured and validated.
• An application of simultaneous determination of 24 analytes was performed in feces.
• A long PEEK tube was used to generate desired pressure for extraction vessel.
• TFC column was online introduced as SPE column to trap low molecular analytes.

Direct analysis is of great importance to understand the real chemical profile of a given sample, notably biological materials, because either chemical degradation or diverse errors and uncertainties might be resulted from sophisticated protocols. In comparison with biofluids, it is still challenging for direct analysis of solid biological samples using high performance liquid chromatography coupled with tandem mass spectrometry (LC–MS/MS). Herein, a new analytical platform was configured by online hyphenating pressurized liquid extraction (PLE), turbulent flow chromatography (TFC), and LC–MS/MS. A facile, but robust PLE module was constructed based on the phenomenon that noticeable back-pressure can be generated during rapid fluid passing through a narrow tube. TFC column that is advantageous at extracting low molecular analytes from rushing fluid was employed to link at the outlet of the PLE module to capture constituents-of-interest. An electronic 6-port/2-position valve was introduced between TFC column and LC–MS/MS to fragment each measurement into extraction and elution phases, whereas LC–MS/MS took the charge of analyte separation and monitoring. As a proof of concept, simultaneous determination of 24 endogenous substances including eighteen steroids, five eicosanoids, and one porphyrin in feces was carried out in this paper. Method validation assays demonstrated the analytical platform to be qualified for directly simultaneous measurement of diverse endogenous analytes in fecal matrices. Application of this integrated platform on homolog-focused profiling of feces is discussed in a companion paper.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1454, 8 July 2016, Pages 58–66
نویسندگان
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