Sha’Ato, R., Ajayi, S.O. and Ojanuga, A.G. (2012) Total and Extractable Copper, Iron, Manganese and Zinc in Major Agricultural Soils in the Lower Benue Valley, Central Nigeria and the Concept of Extractant Efficiency. Nigerian Journal of Chemical Research, 17, 59-62.

has been cited by the following article:

• TITLE: Kinetics of Sorption of Pendimethalin on Soil Samples Obtained from the Banks of Rivers Katsina-Ala and Benue, Central Nigeria

  AUTHORS: Justin Kpagh, Rufus Sha’Ato, Raymond A. Wuana, Terrumun A. Tor-Anyiin

  KEYWORDS: Kinetics, Sorption, Pendimethalin, Soil, Nigeria

  JOURNAL NAME: Journal of Geoscience and Environment Protection, Vol.4 No.1, January 8, 2016

  ABSTRACT: Kinetics of the sorption of the herbicide, pendimethalin (3,4-Dimethyl-2,6-dinitro-N-pentan-3-yl-aniline) on four soil samples obtained from the banks of Rivers Benue and Katsina-Ala, in Central Nigeria was studied by contacting 5.0 g soil samples with 100 mL 7 × 10-6 M herbicide solution. The sorption was monitored by following the herbicide concentration in the aqueous phase spectrophotometrically at one hour intervals for 5 hours (at 25°C, 35°C, 45°C, 55°C and 65°C, respectively). Pseudo-first order kinetics treatment of the data showed that sorption rates as well as the accompanying activation energies were low, indicating that physical adsorption is the operative mechanism for its retention in the soils and that the herbicide tended to reside more in the aqueous phase, which raised its potential to contaminate natural water systems, when applied on the field.