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Muendo, B.M.* ; Shikuku, V.O.* ; Getenga, Z.M.* ; Lalah, J.O.* ; Wandiga, S.O.* ; Rothballer, M.

Adsorption-desorption and leaching behavior of diuron on selected Kenyan agricultural soils.

Heliyon 7:e06073 (2021)
Verlagsversion DOI PMC
Open Access Gold
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In this work, the adsorption-desorption dynamics of diuron in three typical Kenyan agricultural soils, Nzoia (NZ), Thika (TH) and Machakos (MK) was investigated. The equilibrium adsorption data, tested against three classical nonlinear adsorption isotherms, was best described by the Freundlich model. The Freundlich adsorption constant, (KF), increased in the order MK > TH > NZ soil. Additionally, the negative Gibb's free energy values indicate the adsorption processes were thermodynamically spontaneous and physical. Multiple linear regression analysis indicated that the adsorption-desorption behavior was controlled by the clay and phosphorus contents of the soil. Phosphorus negatively affected the adsorption of diuron and promoted desorption. The groundwater ubiquity score (GUS) indicated that diuron movement rating in MK soil was ‘moderate’ while the movement in TH and NZ soils was ‘high’.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Adsorption ; Desorption ; Diuron ; Leaching ; Soil
Sprache englisch
Veröffentlichungsjahr 2021
HGF-Berichtsjahr 2021
ISSN (print) / ISBN 2405-8440
e-ISSN 2405-8440
Zeitschrift Heliyon
Quellenangaben Band: 7, Heft: 2, Seiten: , Artikelnummer: e06073 Supplement: ,
Verlag Elsevier
Verlagsort London [u.a.]
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Network Biology (INET)
POF Topic(s) 30203 - Molecular Targets and Therapies
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-506400-001
DOI 10.1016/j.heliyon.2021.e06073
Scopus ID 85100475502
PubMed ID 33604468
Erfassungsdatum 2021-04-14
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