2014
Accumulation Kinetics and Equilibrium Partitioning Coefficients for Semivolatile Organic Pollutants in Forest Litter
NIZZETTO, Luca, Xiang LIU, Gan ZHANG, Klára KOMPRDOVÁ, Jiří KOMPRDA et. al.Základní údaje
Originální název
Accumulation Kinetics and Equilibrium Partitioning Coefficients for Semivolatile Organic Pollutants in Forest Litter
Autoři
NIZZETTO, Luca (380 Itálie, garant, domácí), Xiang LIU (156 Čína), Gan ZHANG (156 Čína), Klára KOMPRDOVÁ (203 Česká republika, domácí) a Jiří KOMPRDA (203 Česká republika, domácí)
Vydání
ENVIRONMENTAL SCIENCE & TECHNOLOGY, WASHINGTON, AMER CHEMICAL SOC, 2014, 0013-936X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.330
Kód RIV
RIV/00216224:14310/14:00079298
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000329548800056
Klíčová slova anglicky
POLYBROMINATED DIPHENYL ETHERS; POLYCHLORINATED-BIPHENYLS; PLANT-LEAVES; ORGANOCHLORINE COMPOUNDS; CHEMICAL VAPORS; AIR; PCBS; FATE; BIOCONCENTRATION; SOILS
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 3. 2015 13:13, Ing. Filip Vaculovič
Anotace
V originále
Soils are important stores of environmentally cycling semivolatile organic contaminants (SVOCs) and represent relevant atmospheric secondary sources whenever environmental conditions favor re-emission. The exchange between air and soil is controlled by resistances posed by interfacial matrices such as the ubiquitously distributed vegetation litter. For the first lime, this study focused on the experimental characterization of accumulation parameters for SVOCs in litter under real field conditions. The logarithm of the litter-air equilibrium partitioning coefficient ranged 6.8-8.9 and had a similar dependence on logK(OA) as that of plant foliage and soil data. Uptake and release rates were also K-OA dependent with values (relevant for real environmental conditions) ranging 30,000-150,000 d(-1) and 0.0004-0.0134 d(-1), respectively. The overall mass transfer coefficient v controlling litter-air exchange (0.03-1.4 cm s(-1)) was consistent with previously reported data of v for foliage in forest canopies after normalization on leaf area index. Obtained data suggest that litter holds the potential for influencing atmospheric fugacity in proximity to soil, likely affecting overall exchange of SVOCs between the soil reservoir and the atmosphere.