کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6632554 | 1424951 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectral characterization and comparison of humic acids isolated from some European lignites
ترجمه فارسی عنوان
خصوصیات طیفی و مقایسه اسیدهای هومیک ایزوله شده از برخی از لیگن های اروپایی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Humic acids isolated from seven lignite samples from six European coal basins were characterized using spectral methods and elemental analysis and compared with each other. X-ray photoelectron spectroscopy and fluorescence spectrometry are not commonly used for the investigation of lignite humic acids, although they may provide relevant information. Comparison of the examined lignite humic acids shows that they are very similar to each other in chemical nature regarding the at least degree of aromaticity, molecular weight, and the distribution of functional groups. Fluorophores of lignite humic acids lie within the A region with typical maxima centred in the range 255-265/460-510â¯nm. EEM spectra have the character of fingerprints for humic acids, and lignites (as the starting material). In this work, the capacity of lignite as a parent source of humic acids for agricultural applications is appreciated mainly on the base of extractability and ash content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 213, 1 February 2018, Pages 123-132
Journal: Fuel - Volume 213, 1 February 2018, Pages 123-132
نویسندگان
LeoÅ¡ DoskoÄil, Jana BurdÃková-Szewieczková, VojtÄch Enev, LukáÅ¡ Kalina, JaromÃr Wasserbauer,