title: Ultrasound assisted extraction of Maxilon Red GRL dye from water samples using cobalt ferrite nanoparticles loaded on activated carbon as sorbent: Optimization and modeling.
abstract: In this research, a selective, simple and rapid ultrasound assisted dispersive solid-phase micro-microextraction (UA-DSPME) was developed using cobalt ferrite nanoparticles loaded on activated carbon (CoFe2O4-NPs-AC) as an efficient sorbent for the preconcentration and determination of Maxilon Red GRL (MR-GRL) dye. The properties of sorbent are characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Vibrating sample magnetometers (VSM), Fourier transform infrared spectroscopy (FTIR), Particle size distribution (PSD) and Scanning Electron Microscope (SEM) techniques. The factors affecting on the determination of MR-GRL dye were investigated and optimized by central composite design (CCD) and artificial neural networks based on genetic algorithm (ANN-GA). CCD and ANN-GA were used for optimization. Using ANN-GA, optimum conditions were set at 6.70, 1.2mg, 5.5min and 174μL for pH, sorbent amount, sonication time and volume of eluent, respectively. Under the optimized conditions obtained from ANN-GA, the method exhibited a linear dynamic range of 30-3000ngmL-1with a detection limit of 5.70ngmL-1. The preconcentration factor and enrichment factor were 57.47 and 93.54, respectively with relative standard deviations (RSDs) less than 4.0% (N=6). The interference effect of some ions and dyes was also investigated and the results show a good selectivity for this method. Finally, the method was successfully applied to the preconcentration and determination of Maxilon Red GRL in water and wastewater samples.
authors.affiliation: Chemistry Department, Gachsaran Branch, Islamic Azad University, Gachsaran 75818-63876, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Mehrabi
authors.affiliation: Chemistry Department, Gachsaran Branch, Islamic Azad University, Gachsaran 75818-63876, Iran. Electronic address: a.vafaei11@yahoo.com.
authors.forename: Azam
authors.initials: A
authors.lastname: Vafaei
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran. Electronic address: m_ghaedi@mail.yu.ac.ir.
authors.forename: Mehrorang
authors.initials: M
authors.lastname: Ghaedi
authors.affiliation: Chemistry Department, Gachsaran Branch, Islamic Azad University, Gachsaran 75818-63876, Iran.
authors.forename: Abdol Mohammad
authors.initials: AM
authors.lastname: Ghaedi
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran.
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Alipanahpour Dil
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran.
authors.forename: Arash
authors.initials: A
authors.lastname: Asfaram
keywords: Artificial neural network-genetic algorithm; Central composite design; CoFe(2)O(4)-NPs-AC; Determination; Maxilon Red GRL; Ultrasound assisted