نتایج جستجو برای: packed column

تعداد نتایج: 90126  

Journal: :JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1991

Journal: :Journal of Minerals and Materials Characterization and Engineering 2003

Journal: :Journal of Food Processing & Technology 2018

Journal: :Journal of chromatographic science 2010
Jiajing Wang Indiana Tanret Debby Mangelings Guorong Fan Yutian Wu Yvan Vander Heyden

A pressurized capillary electrochromatographic (pCEC) fingerprint of Ginkgo biloba leaf extract was developed on three different types of capillary columns. A commercial column packed with 3-microm particles and an in-house column packed with 5-microm particles were investigated for their performance. Additionally, a monolithic column was included in the fingerprint study as a potential alterna...

Journal: :Journal of chromatography. A 2014
Qing Liu Lijun Yang Qiuquan Wang Bo Zhang

Duplex capillary columns with a packed and an open section are widely used in electrochromatography (CEC). The duplex column configuration leads to non-uniform voltage drop, electrical field distribution and separation performance. It also adds to the complexity in understanding and optimizing electrochromatographic process. In this study, we introduced a simplex column configuration based on s...

Journal: :Clinical chemistry 1995
J F Livesey S L Perkins N E Tokessy M J Maddock

We developed a packed-column chromatographic procedure capable of simultaneous quantitation of methanol, ethanol, isopropanol, acetone, and ethylene glycol. This method was then updated to a rapid, sensitive, wide-bore capillary method. The packed-column system uses direct injection of 1 microL of Na2WO4/H2SO4-deproteinized serum onto a 1.8 m x 2 mm (i.d.) column packed with 80/100 HayeSep R. A...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2002
mohammad ali taher

iron is quantitatively retained on an adsorbent made by coprecipitation of 1,2-dihydroxybenzene-3,5-disulfonic acid (tiron) and tetradecyldimethylbenzylammonium choride (tdba) an microcrystalline naphthalene as a slurry or packed in a column, in the ph range 6.0-9.0 from a large volumes of aqueous solutions (up to 200 ml on microcrystalline naphthalene and up to 500 ml of aqueous solutions in t...

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