Short columns for gas chromatography packed with plasma-modified silica gels
β Scribed by Chr. Chanev; N. Petsev; I. Topalova; St. Ivanov; T.B. Gavrilova
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 410 KB
- Volume
- 520
- Category
- Article
- ISSN
- 1873-3778
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A procedure is described in which a wide bore glass capillary column is used as an alternative to the more traditional packed column in the analysis of amino acid levels in plasma. The coefficientsof variationforallaminoacids (with theexceptionof aspartic acid) were better than 1 1 O h with recoveri
Adsorbents were prepared, based on silica gel modified with phthalocyanine and copper and nickel phthalocyanates (H~Pc, CuPc, NiPc) by adsorption of phthalocyanine from a solution in concentrated sulphuric acid. Adsorbents based on graphitized thermal carbon black (Carbochroms) were also been prepar