Other formats:
BibTeX
LaTeX
RIS
@article{827428, author = {Kobližková, Martina and Dušek, Ladislav and Jarkovský, Jiří and Hofman, Jakub and Bucheli, Thomas and Klánová, Jana}, article_location = {USA}, article_number = {16}, keywords = {ATROPISOMERIC POLYCHLORINATED-BIPHENYLS; MULTIDIMENSIONAL GAS-CHROMATOGRAPHY; HUMAN-MILK SAMPLES; ENANTIOMER FRACTIONS; MASS-SPECTROMETRY; PESTICIDES; RATIOS; BIOMASS; AIR; DEGRADATION}, language = {eng}, issn = {0013-936X}, journal = {Environmental Science & Technology}, title = {Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines?}, volume = {42}, year = {2008} }
TY - JOUR ID - 827428 AU - Kobližková, Martina - Dušek, Ladislav - Jarkovský, Jiří - Hofman, Jakub - Bucheli, Thomas - Klánová, Jana PY - 2008 TI - Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines? JF - Environmental Science & Technology VL - 42 IS - 16 SP - 5978-5984 EP - 5978-5984 PB - The American Chemical Society SN - 0013936X KW - ATROPISOMERIC POLYCHLORINATED-BIPHENYLS KW - MULTIDIMENSIONAL GAS-CHROMATOGRAPHY KW - HUMAN-MILK SAMPLES KW - ENANTIOMER FRACTIONS KW - MASS-SPECTROMETRY KW - PESTICIDES KW - RATIOS KW - BIOMASS KW - AIR KW - DEGRADATION N2 - Enantiomeric fractions (EF) of PCB 95, 132, 149, and 174, alpha-HCH, o,p'-DDD, and o,p'-DDT were analyzed in 112 soil samples using two-dimensional gas chromatography and triple-quadrupole mass spectrometry. To assess the soil conditions that facilitate enantioselective fractionation of chiral compounds, EF values of selected PCBs were further correlated with a wide range of physicochemical and microbial soil parameters in an attempt to identify the influential factors and their mutual relations. It was evident that soils where nonracemic ratios of investigated compounds were found were more carbon rich but they also contained significantly more humic and fulvic acids and total nitrogen. These specific physicochemical properties were accompanied by significantly increased values of all key biotic variables, the amount of microbial biomass, and its respiration activity (both basal and substrate-induced). Therefore, the shifts from racemic ratios appeared to be associated with more sustainable and active soil microflora. Among other abiotic characteristics, most significant differences were detected in the soil texture. Soil samples with significant shifts contained increased amount of clay component and correspondingly decreased proportion of sand fraction. These differences can also be associated with more intensive microbial activity, because clay content and texture with an increased amount of microaggregates are known to be favorable for soil microflora and its viability. ER -
KOBLIŽKOVÁ, Martina, Ladislav DUŠEK, Jiří JARKOVSKÝ, Jakub HOFMAN, Thomas BUCHELI and Jana KLÁNOVÁ. Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines? \textit{Environmental Science \&{} Technology}. USA: The American Chemical Society, 2008, vol.~42, No~16, p.~5978-5984. ISSN~0013-936X.
|