Sorption kinetics of 2,4-dichlorophenoxyacetic acid in selected agricultural soils of Malaysia

Mehdi Sameni, Ismail Sahid, M. Halimah

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The aim of this study was to investigate the sorption kinetics and effects of pH, concentration and temperature on the adsorption of 2,4-D onto soil. Two types of Malaysian ricefield soils were used for this study; namely clay loam and clay soil obtained from the Kerian ricefields in Perak. Agriculture in North West Malaysia relies on the widespread use of herbicides to promote crop performance. Over-application of many herbicides is commonplace, however and may compromise soil and water quality and ultimately human health, within the region. Adsorption experiments were conducted using a batch equilibration technique. The HPLC-UV were used to detect 2,4-D residues in the supernatant. Adsorption equilibrium time was achieved within 2 and 4 h for the clay loam and clay soils, respectively. The percentage of 2,4-D adsorption onto soil was found to be higher in clay loam than in clay soils. Results of the study demonstrated that adsorption of 2,4-D in both soil types was higher at low pH and with increased pH the adsorption decreased. Likewise, the adsorption of 2,4-D was found to be sensitive to temperature, with low temperature significantly increasing the adsorption capacity of the soil. Results also suggested that 2,4-D sorption by soil is concentration dependent.

Original languageEnglish
Pages (from-to)39-48
Number of pages10
JournalResearch Journal of Environmental Toxicology
Volume5
Issue number1
DOIs
Publication statusPublished - 2011

Fingerprint

2,4-Dichlorophenoxyacetic Acid
Malaysia
Sorption
Soil
Adsorption
Soils
Kinetics
Acids
Clay
Herbicides
Temperature
Water Quality
Agriculture
Crops
Water quality
clay
High Pressure Liquid Chromatography
Health

Keywords

  • Adsorption
  • Equilibrium time and 2,4-dichlorophenoxyacetic acid
  • PH
  • Temperature

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Toxicology

Cite this

Sorption kinetics of 2,4-dichlorophenoxyacetic acid in selected agricultural soils of Malaysia. / Sameni, Mehdi; Sahid, Ismail; Halimah, M.

In: Research Journal of Environmental Toxicology, Vol. 5, No. 1, 2011, p. 39-48.

Research output: Contribution to journalArticle

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