title: Dispersive liquid-liquid microextraction method based on solidification of floating organic droplet for the determination of triazine herbicides in water and sugarcane samples.
abstract: Dispersive liquid-liquid microextraction method based on solidification of floating organic droplet (DLLME-SFO) was developed for the analysis of triazines. As model compounds four selected triazine herbicides namely, simazine, atrazine, secbumeton and cyanazine were employed to estimate the extraction efficiency. The experimental conditions were comprehensively studied for the DLLME-SFO method. Under the use of 10 μL of 1-undecanol as extraction solvent, 100 μL of acetonitrile as disperser solvent and 5% (w/v) NaCl for 3 min the results demonstrated that the repeatability (RSD%) of the optimised DLLME-SFO method ranged from 0.03% to 5.1% and the linearity in the range of 0.01-100 ppb. Low limits of detection (0.037-0.008 ppb), and good enrichment factors (195-322) were obtained. The DLLME-SFO method applied in water and sugarcane samples showed excellent relative recoveries (95.7-116.9%) with RSDs <8.6% (n=3) for all samples.
authors: Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; IbnuSina Institute for Fundamental Science Studies, Nanotechnology Research Alliance, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia. Electronic address: marsin@kimia.fs.utm.my.
authors: Mohd Marsin
authors: MM
authors: Sanagi
authors: Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
authors: Hana Hassan
authors: HH
authors: Abbas
authors: Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; IbnuSina Institute for Fundamental Science Studies, Nanotechnology Research Alliance, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
authors: Wan Aini Wan
authors: WA
authors: Ibrahim
authors: Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, Dokki, 12311 Cairo, Egypt. Electronic address: haboulenein@yahoo.com.
authors: Hassan Y
authors: HY
authors: Aboul-Enien
mesh_terms: D006540:Herbicides / Q000032:analysis / Q000302:isolation & purification*; D059627:Liquid Phase Microextraction / Q000379:methods*; D031786:Saccharum / Q000737:chemistry*; D014227:Triazines / Q000032:analysis / Q000302:isolation & purification*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000302:isolation & purification*
chemical_list: D006540:Herbicides; D014227:Triazines; D014874:Water Pollutants, Chemical; D014867:Water
keywords: Dispersive liquid–liquid microextraction; Gas chromatography–mass spectrometry (GC–MS); Solidification of floating organic droplet; Sugarcane juice; Triazine herbicides