کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6637413 | 461141 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gas chromatographic analysis of free steroids in biodiesel
ترجمه فارسی عنوان
تجزیه و تحلیل کروماتوگرافی گاز از استروئید آزاد در بیودیزل
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کلمات کلیدی
استروئید رایگان بیودیزل، گاز کروماتوگرافی، تعیین مشخصات،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
This study aimed to extract, characterize and quantify free steroids present on various types of methyl biodiesel produced in the laboratory from different raw materials and a special type of commercial biodiesel. Steroid extraction was performed by sample saponification followed by solvent extraction of insaponificable. Steroid characterization was obtained by gas chromatograph equipped with a flame ionization detector (GC-FID) and by gas chromatograph coupled with a mass spectrometer (GC-MS); steroid quantification was performed by GC-FID. Several different free steroids found present in the biodiesel types were analyzed; some of them were identified as exclusive to certain biodiesel types. It was possible, based on the present free steroid profile analysis methodology, to identify the origin of a commercial biodiesel. Analyses had show that steroid content in biodiesel types ranged from 610 mg kgâ1 in the babassu biodiesel to 3250 mg kgâ1 in the crambe biodiesel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 130, 15 August 2014, Pages 149-153
Journal: Fuel - Volume 130, 15 August 2014, Pages 149-153
نویسندگان
Kelly S. Bezerra, Nelson R. Antoniosi Filho,