کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1198879 1493532 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Retention time correction in gas chromatography by modeling concentration related effects, applied to the analysis of fatty acid methyl esters
ترجمه فارسی عنوان
اصلاح زمان نگهداری در کروماتوگرافی گاز با استفاده از مدل سازی اثرات مرتبط با غلظت، برای تجزیه و تحلیل متیل استرهای اسید چرب انجام می شود
کلمات کلیدی
تصحیح زمان نگهداری، مدل سازی زمان نگهداری، تراز قله، کروماتوگرافی گازی، تجزیه اسید چرب، اسیدهای چرب ترانس
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Concentration effects on the retention time have been studied for a polar GC-column.
• Mathematical models for these effects have been drawn up.
• The applicability of such models in fatty-acid-analysis is demonstrated.

Constant and reproducible retention times are a basic requirement to allow the automatic peak assignment in complex gas chromatograms. Drifting retention times are best handled by frequent updates, based on reference peaks. Some refinements of this concept have been reported as well as alternative concepts, including pattern recognition algorithms to achieve ultimate precision; however, in applications requiring a wide concentration range, the effects of concentration on the retention time of individual peaks may become relevant, requiring special considerations. The analysis of fatty acid methyl esters is such an application. A model describing concentration related effects was drawn up and found to work best for this purpose. The precision of peak alignment could be improved by an order of magnitude, allowing reliable automation of routine analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1394, 15 May 2015, Pages 118–127
نویسندگان
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