title: Two-dimensional gas chromatography with electron-capture detection used in the determination of specific peptidoglycan and lipopolysaccharide constituents of gram-negative bacteria in infected human urine.
abstract: Gas chromatography with electron-capture detection was used in the determination of diaminopimelic acid (as the N-heptafluorobutyryl isobutyl derivative) and 3-hydroxymyristic acid (as the O-pentafluorobenzoyl methyl derivative) in Gram-negative bacterial cells in infected human urine. Use of the column-switching (two-dimensional gas chromatography) technique greatly enhanced the selectivity of the detection and simplified the processing of samples. The system described should prove useful for trace detection of specific bacterial constituents in complex environments.
authors.affiliation: Department of Technical Analytical Chemistry, Lund University, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Sonesson
authors.forename: L
authors.initials: L
authors.lastname: Larsson
authors.forename: J
authors.initials: J
authors.lastname: Jimenez
mesh_terms: D000599:Amino Acids, Diamino / Q000652:urine*; D001424:Bacterial Infections / Q000652:urine*; D002849:Chromatography, Gas / Q000379:methods; D003960:Diaminopimelic Acid / Q000652:urine*; D004926:Escherichia coli / Q000032:analysis; D006090:Gram-Negative Bacteria / Q000032:analysis*; D006801:Humans; D007711:Klebsiella pneumoniae / Q000032:analysis; D009227:Myristic Acids / Q000652:urine*
chemical_list: D000599:Amino Acids, Diamino; D009227:Myristic Acids; C009893:beta-hydroxymyristic acid; D003960:Diaminopimelic Acid