Response surface methodology based on central composite design as a chemometric tool for optimization of dispersive-solidification liquid–liquid microextraction for speciation of inorganic arsenic in environmental water samples

Asadollahzadeh, Mehdi; Tavakoli, Hamed; Torab‐Mostaedi, Meisam; Hosseini, Ghaffar; Hemmati, Alireza

doi:10.1016/j.talanta.2013.11.071

Cited by 104 publications

(51 citation statements)

References 36 publications

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“…In this way, only statistically significant variables would be selected for further optimization; therefore, the number of experiments would be reduced for the next step (Doehlert design) [31]. Based on the preliminary studies and experiments, five parameters including the CHCl 3 volume (μL), H 2 O volume (mL), NaCl % ratio (w/v), extraction time (min), and centrifugation time (min) were considered.…”

Section: Experimental Screening Using Ffdmentioning

confidence: 99%

Determination of carbohydrates in tobacco by pressurized liquid extraction combined with a novel ultrasound-assisted dispersive liquid–liquid microextraction method

Cai¹,

Lei

et al. 2015

Analytica Chimica Acta

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Section: Experimental Screening Using Ffdmentioning

confidence: 99%

Determination of carbohydrates in tobacco by pressurized liquid extraction combined with a novel ultrasound-assisted dispersive liquid–liquid microextraction method

Cai¹,

Lei

et al. 2015

Analytica Chimica Acta

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“…The aromatic C=C stretch is observed at ~ 1580 cm −1 in spectra of MWCNT before the functionalization. 26 observed to be smooth, homogeneous, tidy and approximately uniform in size distribution (Fig. 3a).…”

Section: Characterization Of Adsorbentmentioning

confidence: 95%

Preparation and characterization of MWCNTs functionalized by N-(3-nitrobenzylidene)-N′-trimethoxysilylpropyl-ethane-1,2-diamine for the removal of aluminum(iii) ions via complexation with eriochrome cyanine R: spectrophotometric detection and optimization

et al. 2015

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A novel adsorbent was fabricated by covalently anchoring N-(3-Nitro-benzylidene)-N'-trimethoxysilylpropylethane-1, 2-diamine onto multiwalled carbon nanotubes (NBATSPED-MWCNTs). This novel material was characterized by different techniques such as XRD, SEM, FT-IR and TGA-DTA. Subsequently, it was used for the ultrasound-assisted removal of aluminum (III) ions via its complexation with eriochrome cyanine R (ECR)indicator. The influences of variables such as initial ECR concentration (X 1 ), initial Al 3+ ions concentration (X 1 ), adsorbent dosage (X 3 ) and contact time (X 4 ) on the efficiency of removal process were investigated by small central composite design (CCD) under response surface methodology and genetic algorithm (GA). The process was empirically modeled to reveal the significant variables and their possible interactions. The optimization conditions were set as: 3 min, 20.238 mg, 20 mg L -1 and 15 mg L -1 for sonication time, adsorbent mass, initial Al 3+ ions concentration and initial ECR concentration, respectively. Finally, it was found that the equilibrium and kinetic of adsorption process follow the Langmuir isotherm and pseudo-second-order kinetic model, respectively. From the Langmuir isotherm, maximum monolayer capacity (q max ) was obtained to be 46.74 mg g −1 at optimum conditions.

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“…The multiple correlation coefficient of R 2 (the adjusted R 2 and predicted R 2 values), F-value, "Adeq Precision", representation of graphical interpretation of the interactions of variable, determination of the best operating conditions of a process and the three-dimensional (3D) plots are highly recommended 22,33 . Table 1.…”

Section: Response Surface Designmentioning

confidence: 99%

Ultrasound-assisted removal of Al³⁺ ions and Alizarin red S by activated carbon engrafted with Ag nanoparticles: central composite design and genetic algorithm optimization

et al. 2015

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In this work, activated carbon engrafted with Ag nanoparticles (Ag-NPs-AC) was prepared and applied for ultrasonic assisted simultaneous removal of aluminum (Al 3+ ) ions and Alizarin red S (ARS) dye from aqueous medium. The physicochemical properties of Ag-NPs-AC were determined by different techniques such as SEM and FTIR. Effects of various operating parameters on the extent of adsorption were investigated. The optimum of condition was determined in order to achieve maximum removal percentage from the binary mixture. It was observed that the maximum performance for both the species was achieved at pH of 6. The influence of different variables such as concentration of initial Al 3+ (mg L -1 ) ions, ARS (mg L -1 ), adsorbent mass (mg) and sonication time (s) were studied using central composite design (CCD) combined with desirability function approach (DFA) and genetic algorithm (GA). The isotherm models for the adsorption process were evaluated and the equilibrium data accurately described by the Langmuir model with maximum monolayer adsorption capacity for Al 3+ ions and ARS of 222.2 and 232.6 mg g -1 , respectively.

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Response surface methodology based on central composite design as a chemometric tool for optimization of dispersive-solidification liquid–liquid microextraction for speciation of inorganic arsenic in environmental water samples

Cited by 104 publications

References 36 publications

Determination of carbohydrates in tobacco by pressurized liquid extraction combined with a novel ultrasound-assisted dispersive liquid–liquid microextraction method

Determination of carbohydrates in tobacco by pressurized liquid extraction combined with a novel ultrasound-assisted dispersive liquid–liquid microextraction method

Preparation and characterization of MWCNTs functionalized by N-(3-nitrobenzylidene)-N′-trimethoxysilylpropyl-ethane-1,2-diamine for the removal of aluminum(iii) ions via complexation with eriochrome cyanine R: spectrophotometric detection and optimization

Ultrasound-assisted removal of Al³⁺ ions and Alizarin red S by activated carbon engrafted with Ag nanoparticles: central composite design and genetic algorithm optimization

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Response surface methodology based on central composite design as a chemometric tool for optimization of dispersive-solidification liquid–liquid microextraction for speciation of inorganic arsenic in environmental water samples

Cited by 104 publications

References 36 publications

Determination of carbohydrates in tobacco by pressurized liquid extraction combined with a novel ultrasound-assisted dispersive liquid–liquid microextraction method

Determination of carbohydrates in tobacco by pressurized liquid extraction combined with a novel ultrasound-assisted dispersive liquid–liquid microextraction method

Preparation and characterization of MWCNTs functionalized by N-(3-nitrobenzylidene)-N′-trimethoxysilylpropyl-ethane-1,2-diamine for the removal of aluminum(iii) ions via complexation with eriochrome cyanine R: spectrophotometric detection and optimization

Ultrasound-assisted removal of Al3+ ions and Alizarin red S by activated carbon engrafted with Ag nanoparticles: central composite design and genetic algorithm optimization

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Ultrasound-assisted removal of Al³⁺ ions and Alizarin red S by activated carbon engrafted with Ag nanoparticles: central composite design and genetic algorithm optimization