Component fractionation of wood-tar by column chromatography with the packing material of silica gel
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چکیده
منابع مشابه
Separation of lipids by Silica Gel G column chromatography.
A column chromatographic procedure utilizing Silica Gel C is described for separating lipid components of serum and lipoproteins into individual fractions containing hydrocarbons (I), cholesterol esters (II), triglycerides (111), cholesterol (IV) , free fatty acids (V) , and phospholipids (VI). Silica Gel G required no pretreatment except adjustment of moisture content to 10%. The method afford...
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gaschromatography (PGLC) as shown in Fig. 2. Fraction C had a typical aroma of tea, and the yield was about 10 g. In this com munication, we wish to report components in the fraction. Fraction C was subjected to silica gel column chromatography using solvents system as shown in Table I and the eluate was collected every 100 ml, which was analyzed by GLC. The eluate was finally separated into te...
متن کاملFractionation of human urine by gel chromatography.
High-resolution anion-exchange chromatography of human urine can resolve more than 150 constituents that absorb ultraviolet light. Prefractionation of urine on Sephadex G.10 helped us identify the constituents and simplified the anion-exchange chromatogram. The material associated with the 13 peaks obtained by gel chromatography was pooled and concentrated into six fractions, which were subsequ...
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در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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ژورنال
عنوان ژورنال: Chinese Science Bulletin
سال: 2011
ISSN: 1001-6538,1861-9541
DOI: 10.1007/s11434-010-4144-x