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Adsorption and Desorption of Diuron as a Function of Soil Properties
Author(s) -
Mustafa M. A.,
Gamar Y.
Publication year - 1972
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1972.03615995003600040021x
Subject(s) - desorption , adsorption , soil water , environmental chemistry , chemistry , organic matter , total organic carbon , arid , soil science , environmental science , geology , organic chemistry , paleontology
The study was conducted to determine the properties of 12 arid‐zone soils low in organic matter (0.1–1.7%) that are responsible for the adsorption and desorption of diuron [3‐(4,4‐dichlorophenyl)‐1,1‐dimethylurea]. Statistical analysis rendered r 2 values for diuron adsorbed in relation of CEC, specific surface area, and organic carbon percentage equal to 0.785, 0.754, and 0.476, respectively. It was concluded that CEC or specific surface area can account for the variability of diuron adsorption in arid‐zone soils. Variability of diuron desorbed was basically due to diuron initially absorbed ( r 2 = 0.864). Again desorption could be predicted from specific surface area ( r 2 = 0.846) or CEC ( r 2 = 0.828) and not from organic carbon percentages ( r 2 = 0.372). Multiple regression analysis did not practically improve the linear relationship obtained from adsorption and desorption.