Biography:

In the past M. Matucha has collaborated on articles with P. Zachǎr. One of their most recent publications is Isotope effect in gas—liquid chromatography of labelled compounds. Which was published in journal Journal of Chromatography A.

More information about M. Matucha research including statistics on their citations can be found on their Copernicus Academic profile page.

M. Matucha's Articles: (3)

Isotope effect in gas—liquid chromatography of labelled compounds

AbstractThe isotope effect in the gas—liquid chromatography (GLC) of 14C- and 2H-labelled compounds was examined experimentally and theoretically. Capillary column gas chromatographic—mass spectrometric (GC—MS) data indicated that the isotope effect was very small for 14C-labelled higher fatty acids and large for perdeuterated n-alkanes. Measurement of the temperature dependence of the corrected retention volumes and separation factors of C15C17n-alkanes and their perdeuterated analogues yielded a relationship between the molar volume, enthalpy change and chromatographic retention: heavier isotopomers having lower molar volumes are eluted earlier when Van der Waals dispersion forces plays a dominant role in the solute—stationary phase interaction. The effect is proportional to the number of heavier atoms in the molecule and should be taken into account in the GLC and GC—MS of isotopically substituted compounds on efficient capillary columns.

Short communicationChloroacetic acids—Degradation intermediates of organic matter in forest soil

AbstractChloroacetic acids (CAA), especially trichloroacetic acid (TCA), were considered phytotoxic secondary air pollutants of anthropogenic origin affecting conifers and were therefore intensively studied. However, another source of CAA has been then found: a forest soil in which humic substances are degraded by microbial processes to CAA and chloroform. This new aspect—formation of CAA in the soil—means that CAA are continuously produced and also biodegraded by other microorganisms in the soil and contribute thereby to the degradation of soil organic matter (SOM). Here we show for the first time the formation of dichloroacetic acid (DCA) and TCA in the forest soil by chlorination of SOM using 36Cl labeled chloride. We suggest that CAA are both formed and biodegraded in the forest soil and thus represent intermediates in one of the processes of SOM decay.

Physical factors negatively affecting evaluation of long-term biodegradation experiments of polychlorinated biphenyls

AbstractBehaviour of PCB added in the form of a technical mixture (Delor 106) and [14C]PCB 77 into different aqueous model cultivation media in long-term experiments was studied. The work was focused on monitoring PCB recovery from liquid media in the absence of micro-organisms. GC-ECD and radioanalysis were utilised for determination of PCB in the examined systems. Strong relations between duration of experiments, composition of media, degree of chlorination of biphenyls, and recovery of PCB were found. The lowest yields of PCB were observed for the extracts from model solutions based on N-limited cultivation media without veratryl alcohol and Tween 80. The addition of these components, mainly of Tween 80, caused a significant increase of PCB recoveries.

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