Detailed Information on Publication Record
2008
Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines?
KOBLIŽKOVÁ, Martina, Ladislav DUŠEK, Jiří JARKOVSKÝ, Jakub HOFMAN, Thomas BUCHELI et. al.Basic information
Original name
Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines?
Name in Czech
Mohou fyzikálně-chemické vlastnosti půd vysvětlit enantiomerní posuny u chirálních organochlorových látek?
Authors
KOBLIŽKOVÁ, Martina (203 Czech Republic), Ladislav DUŠEK (203 Czech Republic), Jiří JARKOVSKÝ (203 Czech Republic), Jakub HOFMAN (203 Czech Republic), Thomas BUCHELI (756 Switzerland) and Jana KLÁNOVÁ (203 Czech Republic, guarantor)
Edition
Environmental Science & Technology, USA, The American Chemical Society, 2008, 0013-936X
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10511 Environmental sciences
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 4.458
RIV identification code
RIV/00216224:14310/08:00027891
Organization unit
Faculty of Science
UT WoS
000258439600025
Keywords (in Czech)
ATROPISOMERIC POLYCHLORINATED-BIPHENYLS; MULTIDIMENSIONAL GAS-CHROMATOGRAPHY; HUMAN-MILK SAMPLES; ENANTIOMER FRACTIONS; MASS-SPECTROMETRY; PESTICIDES; RATIOS; BIOMASS; AIR; DEGRADATION
Keywords in English
ATROPISOMERIC POLYCHLORINATED-BIPHENYLS; MULTIDIMENSIONAL GAS-CHROMATOGRAPHY; HUMAN-MILK SAMPLES; ENANTIOMER FRACTIONS; MASS-SPECTROMETRY; PESTICIDES; RATIOS; BIOMASS; AIR; DEGRADATION
Tags
Tags
International impact, Reviewed
Změněno: 25/6/2009 10:17, prof. RNDr. Luděk Bláha, Ph.D.
V originále
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.
In Czech
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.
Links
| MSM0021622412, plan (intention) |
|