کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5161819 1502271 2016 58 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unmixing of mixed oil using chemometrics
ترجمه فارسی عنوان
مخلوط کردن روغن مخلوط با استفاده از شیمی درمانی
کلمات کلیدی
نفت مخلوط، مخلوط کردن شیمیدرمانی حداقل مربعات متناوب
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
In this study, chemometrics was used to unmix a set of oil samples that had been mixed in the laboratory using three end-member oils. It was shown that the concentrations of individual compounds in the mixed oil varied linearly with the fractional contribution of each end-member oil. However, biomarker ratios in the mixed oils varied non-linearly with the amount of each end-member oil. This study demonstrates that concentrations and ratios of biomarkers yield different results when de-convoluting mixed oils. Concentrations of biomarkers are therefore more suitable than the biomarker ratios for unmixing mixed oils. Alternating least squares of biomarker concentrations (ALS-C) provides an excellent way to calculate the number, proportions, and compound compositions of the end-members in mixed oil samples. The ALS-C results are accurate, regardless of whether end-member oils are included in the sample set. The biomarker ratios of end-member oils cannot be directly obtained by ALS, but can instead be calculated using related compound concentrations computed by ALS-C. This method should be applied and verified widely using actual geochemical data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Geochemistry - Volume 92, February 2016, Pages 1-15
نویسندگان
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