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Titolo:
ACIFLUORFEN SORPTION AND SORPTION KINETICS IN SOIL
Autore:
LOCKE MA; GASTON LA; ZABLOTOWICZ RM;
Indirizzi:
ARS,SO WEED SCI LAB,USDA,POB 350 STONEVILLE MS 38776
Titolo Testata:
Journal of agricultural and food chemistry
fascicolo: 1, volume: 45, anno: 1997,
pagine: 286 - 293
SICI:
0021-8561(1997)45:1<286:ASASKI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
HERBICIDE ACIFLUORFEN; BINDING ABILITY; ADSORPTION; DESORPTION; DEGRADATION; PENETRATION; SODIUM;
Keywords:
HERBICIDE; ACIFLUORFEN; DIPHENYL ETHER; SORPTION; ORGANIC CARBON; TILLAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Locke et al., "ACIFLUORFEN SORPTION AND SORPTION KINETICS IN SOIL", Journal of agricultural and food chemistry, 45(1), 1997, pp. 286-293

Abstract

Factors which influence kinetics of sorption for acifluorfen, a postemergence herbicide, in soil were evaluated. Twelve soils of varying characteristics were used in this study. Sorption kinetics experiments with 5.86 mu M C-14-labeled (19.6 Bq mL(-1)) acifluorfen were conductedfor equilibration times up to 96 h. Sorption was rapid for all soils,and most soils reached a pseudo-equilibrium after 24-48 h of equilibration. Apparent sorption increased at later times, possibly reflectingsorption of acifluorfen or metabolites, since acifluorfen is subject to biotransformation. Further investigation comparing sorption at 4 and 25 degrees C indicated that microbial metabolism was occurring for some soils at equilibration times longer than 24-48 h. Aminoacifluorfenwas observed in methanol extracts of soils equilibrated 96 h. Soils were equilibrated for 24 h with C-14-labeled acifluorfen (2.6-65.8 mu M, 19.5 Bq mL(-1)) to obtain sorption isotherms. Capacity for acifluorfen sorption in these soils generally increased with increasing soil organic carbon content, cation exchange capacity, and soil acidity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 18:31:43