Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines?

KOBLIŽKOVÁ, Martina, Ladislav DUŠEK, Jiří JARKOVSKÝ, Jakub HOFMAN, Thomas BUCHELI a Jana KLÁNOVÁ. Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines? Environmental Science & Technology. USA: The American Chemical Society, 2008, roč. 42, č. 16, s. 5978-5984. ISSN 0013-936X.

Základní údaje

• Originální název: Can physicochemical and microbial soil properties explain enantiomeric shifts of chiral organochlorines?
• Název česky: Mohou fyzikálně-chemické vlastnosti půd vysvětlit enantiomerní posuny u chirálních organochlorových látek?
• Autoři: KOBLIŽKOVÁ, Martina (203 Česká republika), Ladislav DUŠEK (203 Česká republika), Jiří JARKOVSKÝ (203 Česká republika), Jakub HOFMAN (203 Česká republika), Thomas BUCHELI (756 Švýcarsko) a Jana KLÁNOVÁ (203 Česká republika, garant).
• Vydání: Environmental Science & Technology, USA, The American Chemical Society, 2008, 0013-936X.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Článek v odborném periodiku
• Obor: 10511 Environmental sciences
• Stát vydavatele: Spojené státy
• Utajení: není předmětem státního či obchodního tajemství
• Impakt faktor: Impact factor: 4.458
• Kód RIV: RIV/00216224:14310/08:00027891
• Organizační jednotka: Přírodovědecká fakulta
• UT WoS: 000258439600025
• Klíčová slova česky: ATROPISOMERIC POLYCHLORINATED-BIPHENYLS; MULTIDIMENSIONAL GAS-CHROMATOGRAPHY; HUMAN-MILK SAMPLES; ENANTIOMER FRACTIONS; MASS-SPECTROMETRY; PESTICIDES; RATIOS; BIOMASS; AIR; DEGRADATION
• Klíčová slova anglicky: ATROPISOMERIC POLYCHLORINATED-BIPHENYLS; MULTIDIMENSIONAL GAS-CHROMATOGRAPHY; HUMAN-MILK SAMPLES; ENANTIOMER FRACTIONS; MASS-SPECTROMETRY; PESTICIDES; RATIOS; BIOMASS; AIR; DEGRADATION
• Štítky: Air, ATROPISOMERIC POLYCHLORINATED-BIPHENYLS, biomass, degradation, ENANTIOMER FRACTIONS, HUMAN-MILK SAMPLES, MASS-SPECTROMETRY, MULTIDIMENSIONAL GAS-CHROMATOGRAPHY, pesticides, ratios
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

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.

Anotace česky

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.

Návaznosti

• MSM0021622412, záměr: Název: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Akronym: INCHEMBIOL)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální , regionální a lokální úrovni