Journal
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
Volume 55, Issue 4, Pages 293-300Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/03601234.2019.1692613
Keywords
Magnetic graphene oxide; tert-butylamine; 2; 4-D; water; food
Funding
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad (Iran)
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In the present work, dispersive micro-solid phase extraction (D-mu-SPE) method using magnetic graphene oxide tert-butylamine (GO/Fe3O4/TBA) nanocomposite, as an efficient sorbent, was applied for determining 2,4-dichlorophenoxyacetic acid (2,4-D) in water and food samples. Detection was carried out using high-performance liquid chromatography (HPLC) instrument. Influential parameters of D-mu-SPE such as sorbent and its amount, elution solvent and its volume, adsorption and desorption times and pH of sample solution were investigated and optimized. Under the optimized conditions, limit of detection and quantitation values were 0.007 and 0.02 mu g/mL, respectively. Recovery data for several real samples were obtained within the range of 88.0-94.0% with a relative standard deviation (RSD) less than 7.5%. The proposed method was successfully applied to quantitative determination of 2,4-D in several vegetables and water samples.
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