Idioma:

Polychlorinated biphenyl sorption by soils: Measurement of soil-water partition coefficients at equilibrium

Girvin, Don C. ; Scott, Al J.

Chemosphere (Oxford), 1997-11, Vol.35 (9), p.2007-2025 [Periódico revisado por pares]

Oxford: Elsevier Ltd

Texto completo disponível

Citações Citado por

Enviar para

Título:
Polychlorinated biphenyl sorption by soils: Measurement of soil-water partition coefficients at equilibrium
Autor: Girvin, Don C. ; Scott, Al J.
Assuntos: alcohols ; Applied sciences ; Biological and physicochemical properties of pollutants. Interaction in the soil ; congeners ; diffusion ; equations ; Exact sciences and technology ; loam soils ; montmorillonite ; octanol ; polluted soils ; Pollution ; polychlorinated biphenyls ; regression analysis ; silt loam soils ; Soil and sediments pollution ; soil organic matter ; soil water sorption equilibrium coefficients ; solubility ; sorption ; water
É parte de: Chemosphere (Oxford), 1997-11, Vol.35 (9), p.2007-2025
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
Descrição: The sorption of PCB congeners 24′ (lUPAC number 8), 22′55′ (52) and 22′44′55′ (153) by eight soils differing in their organic carbon content (2.3 to 0.2% by Wt.) and expandable clay mineral content (17 to 53 % by wt.) has been investigated for 0.1 g/L soil-water suspensions. The time to reach sorption equilibrium, i.e. sorption-diffusion equilibrium, for a highly aggregated montmorillonitic soil containing 0.9% organic carbon for congeners 8, 52, 153 was determined to be 3, 5, and 10 months, respectively, using a gas-purge technique. For these sorbate-sorbent contact times soil-water sorption equilibrium partition coefficients on a soil-organic carbon basis (K oc) were measured and for these congeners ranged varied from 2.4 × 10 4 to 6.8 × 10 6 mL/g. Based on these data a correlation relation was derived, log K oc = 1.07 log K ow − 0.98, for estimating K oc from known values of octanol-water partition coefficient (K ow). From literature K ow values this regression equation was used to estimate K oc for 46 of the major PCB congeners in Aroclor 1242, 1254 and 1260.
Editor: Oxford: Elsevier Ltd
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Polychlorinated biphenyl sorption by soils: Measurement of soil-water partition coefficients at equilibrium

Girvin, Don C. ; Scott, Al J.

Oxford: Elsevier Ltd

Buscando em bases de dados remotas. Favor aguardar.