کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7609060 1493393 2018 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption behavior of optical brightening agent on microfibrillated cellulose studied through inverse liquid chromatography: The need to correct for axial dispersion effect
ترجمه فارسی عنوان
رفتار جذب کننده عامل نوردهی نوری روی سلولز میکرو فیبلیله شده از طریق کروماتوگرافی مایع معکوس بررسی شده است: نیاز به اصلاح اثر پراکندگی محوری
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The packing of the column with microfibrillated cellulose caused important axial dispersion (Da = 5e-7 m²/s). Simulation of transport phenomena in the column showed that neglecting axial dispersion in the analysis of the chromatogram caused significant error (8%) in the determination of maximum adsorbed amount. We showed that conventional chromatogram analysis technique such as elution by characteristic point could not be used to fit our data. Using a bi-Langmuir isotherm model improved the fitting, but did not take into account axial dispersion, thus provided adsorption parameters which may have no physical significance. Using an inverse method with a single Langmuir isotherm, and fitting the transport equation to the chromatogram was shown to provide a satisfactory fitting to the chromatogram data. In general, the inverse method could be recommended to analyse inverse liquid chromatography data for column packing with significant axial dispersion (Da  > 1e-7 m²/s).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1533, 19 January 2018, Pages 17-29
نویسندگان
, , ,