Download Chemical Methods in Gas Chromatography by V. G. Berezkin PDF

By V. G. Berezkin

During this two-part monograph, the writer describes smooth equipment for the quick column liquid chromatography of excessive- and medium-molecular-weight compounds of organic starting place, i.e. proteins, peptides, enzymes, nucleic acids, poly- and oligonucleotides, poly- and oligosaccharides, advanced biopolymers and biooligomers equivalent to viruses, bacteriophages, ribosomes and glycoconjugates, in addition to another compounds corresponding to immunomodulators. the fabric is contained in components: half A facing normal chromatographic concept, ideas, fabrics and strategies; and half B facing the separation of person compound periods and containing a sign in of chromatographed components and a full-title bibliography. not just is that this a really expert, designated treatise on chromatographic ideas, it additionally provides a huge, balanced overview of quick separation of all recognized vital biopolymers and biooligomers, either basic and intricate, and in addition of a few synthetically ready and pharmaceutically vital biooligomers. additionally, it presents an creation to the appliance of HPLC to the research of the constitution of those components.

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A: ALA = alanine; GLY = glycine; VAL = valaine; THR = threonine; SER = serine; LEU = leucine; ILE = isoleucine; IS (internal standard) = NLE = norleucine; PRO = proline; CYSH = cysteine; HYP = 4-hydroxyproline; MET = methionine; ASP = aspargine; PHE = phenylalanine; GLU = glutamine; LYS = lysine; TYR = tyrosine; ARG = arginine; HIS = histidine; TRF' = tryptophan; C Y S = cystine. B: 2-AIBA = 2-aminoisobutyric acid; 2-ABA = 2-aminobutyric acid; p-ALA = p-alanine; 3-ABA = DL-3-aminobutyric acid; IS = NLE = norleucine; HSER = homoserine; AHBA = DL-4-amino-3-hydroxybutyricacid; PIP = DL-pipecolic acid; 2,4-ABA = 2,4-diaminobutyric acid; MSO = methionine sulphoxide; ORN = ornithine; HYL = 5-hydroxylysine; TYR = tyrosine; 2-AAA = DL-2-aminoadipic acid; DOPA = 3,4-dihydroxyphenylalanine; DAP = DL-2,6-diaminopimelic acid; MIT = 34odotyrosine; HCYS = DL-homocystine; CTT = cystathionine; DIT = 3,s-diiodotyrosine.

The cited examples are indicative of the necessity to estimate the duration of the CFD stage when developing the techniques for all compounds that are of analytical interest. Especially stringent requirements are placed on the rate of the chemical reactions used when the reaction proceeds in a chromatographic system, in a reactor before the column or at the beginning of the column. Esposito [ S l ] , developing the work of Beroza and PECULIARITIES OF THE ELABORATION OF TECHNIQUES 35 B A 4 m ' 5 10 15 I I I 5 10 15 'Time (min) Fig.

Derivatives are formed in a PECULIARITIES OF THE ELABORATION OF TECHNIQUES i 43 + 5 Time (min I Fig. 22. Chromatograms of the products of chlorination of germanium ore with carbon tetrachloride. 1 = Chlorine; 2 = carbon dioxide; 3 = phosgene; 4 = carbon sulphide; 5 = germanium tetrachloride; 6 = carbon tetrachloride. From ref. 113. reactor placed before the chromatographic column. Determination of phosphates is a complicated problem, and the first attempts by many investigators to solve it quantitatively ended in failure.

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