Optimization of dispersive liquid–liquid microextraction combined with high performance liquid chromatography for the analysis of dipyridamole in water and urine samples

Rouhi, Maryam; Pourbasheer, Eslam

doi:10.1007/s00706-015-1442-7

Cited by 12 publications

(7 citation statements)

References 24 publications

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“…Recently, dispersive liquid–liquid microextraction (DLLME) has been developed for preconcentration and determination of compounds . DLLME routinely exhibits a high extraction efficiency, improved stability, the potential for enhanced sensitivity, and a simplified sample pretreatment procedure compared to other micro extraction methods.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration and determination of ceftazidime in real samples using dispersive liquid-liquid microextraction and high-performance liquid chromatography with the aid of experimental design

et al. 2016

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A rapid and simple method for the extraction and preconcentration of ceftazidime in aqueous samples has been developed using dispersive liquid-liquid microextraction followed by high-performance liquid chromatography analysis. The extraction parameters, such as the volume of extraction solvent and disperser solvent, salt effect, sample volume, centrifuge rate, centrifuge time, extraction time, and temperature in the dispersive liquid-liquid microextraction process, were studied and optimized with the experimental design methods. Firstly, for the preliminary screening of the parameters the taguchi design was used and then, the fractional factorial design was used for significant factors optimization. At the optimum conditions, the calibration curves for ceftazidime indicated good linearity over the range of 0.001-10 μg/mL with correlation coefficients higher than the 0.98, and the limits of detection were 0.13 and 0.17 ng/mL, for water and urine samples, respectively. The proposed method successfully employed to determine ceftazidime in water and urine samples and good agreement between the experimental data and predictive values has been achieved.

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Section: Introductionmentioning

confidence: 99%

Preconcentration and determination of ceftazidime in real samples using dispersive liquid-liquid microextraction and high-performance liquid chromatography with the aid of experimental design

et al. 2016

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“…DIP detection in biological and tablets/injections samples has been performed using various analytical methods including spectrophotometry, 7 fluorescence spectrometry, 8 high performance liquid chromatography (HPLC), 9,10 extraction-gravimetry modified surface, 11 differential pulse adsorptive stripping voltammetry (DPASV), 12 square wave voltammetry, 1 chemiluminescence (CL) sensor, [13][14][15] molecularly imprinted polymer (MIP)-modified electrode differential pulse voltammetry. 16,17 The common technique applied in the DIP determination is HPLC method.…”

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confidence: 99%

Construction and Evaluation of a Graphene Oxide Functionalized Aminopropyltriethoxy Silane Surface Molecularly Imprinted Polymer Potentiometric Sensor for Dipyridamole Detection in Urine and Pharmaceutical Samples

Mirzajani¹,

Arefiyan²

2019

J. Braz. Chem. Soc.

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A dipyridamole (DIP) based surface molecularly imprinted polymer (MIP) was synthesized and applied as a sensing agent in a sensing layer of a new modified potentiometric carbon paste electrode (CPE). The potentiometric modified CPEs (GO@SiO 2-NH 2-MIP/MWCNTs/CPE, where GO is graphene oxide and MWCNTs is multi-walled carbon nanotubes) showed an improved performance in term of Nernstian slope, selectivity and response time compared to the unmodified CPE. The response time of the sensor in the range of 2.5 × 10-8-1.1 × 10-2 M DIP was 20 s. The obtained DIP sensor showed low limit of detection (1 × 10-8 M), and satisfactory long-term stability (higher than 4 months). The practical application of the sensor was demonstrated by the determination of DIP concentration in urine samples and pharmaceutical preparations, with good precision and acceptable recoveries (96.0-103.0%). The prepared sensor showed high selectivity for DIP over a number of common species (aspirin, caffeine, ascorbic acid, glucose, urea, bipyridine,

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“…The normality of residuals can be checked by normal probability plot which compares the experimental and model predicted responses. The mathematical relationship between four independent variables can be written by the second order polynomial model:…”

Section: Methodsmentioning

confidence: 99%

An easily organic–inorganic hybrid optical sensor based on dithizone impregnation on mesoporous SBA‐15 for simultaneous detection and removal of Pb(II) ions from water samples: Response‐surface methodology

Dashtian

Zare‐Dorabei

2017

Applied Organom Chemis

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In this study, a novel organic-inorganic hybrid adsorbent for single-step detection and removal of Pb(II) ions based on dithizone (DZ) anchored on mesoporous SBA-15 was fabricated. The designed solid optical sensor revealed rapid colorimetric responses and high selectivity. Central composite design (CCD) combined with desirability function (DF) was applied to evaluate the interactive effects and optimization of important variables such as pH value, mesoporous SBA-15 dosage, contact time and initial concentration of Pb(II) ions and optimum conditions for each of the factors were obtained 6.0, 25 mg, 30 min and 20 μg ml − 1 , respectively. This adsorbent or solid optical chemo sensor exhibited a linear range of 1.0 to 100.0 μg ml −1 of Pb(II) ion concentration with a detection limit of 0.07 μg ml −1 . This adsorbent was applied to determine and remove the Pb(II) in spiked samples. Various isotherm models such as Langmuir, Freundlich, Temkin and Dubinin-Radushkevich were studied for fitting the experimental equilibrium data. Langmuir model was chosen as an efficient model. Various kinetic models such as pseudo-first, second order intraparticle, diffusion models were studied for analysis of experimental adsorption data and the pseudo second order model was chosen as an efficient model. KEYWORDS central composite design, mesoporous SBA-15, organic-inorganic hybrid, Pb(II) ions, solid optical sensor

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Optimization of dispersive liquid–liquid microextraction combined with high performance liquid chromatography for the analysis of dipyridamole in water and urine samples

Cited by 12 publications

References 24 publications

Preconcentration and determination of ceftazidime in real samples using dispersive liquid-liquid microextraction and high-performance liquid chromatography with the aid of experimental design

Preconcentration and determination of ceftazidime in real samples using dispersive liquid-liquid microextraction and high-performance liquid chromatography with the aid of experimental design

Construction and Evaluation of a Graphene Oxide Functionalized Aminopropyltriethoxy Silane Surface Molecularly Imprinted Polymer Potentiometric Sensor for Dipyridamole Detection in Urine and Pharmaceutical Samples

An easily organic–inorganic hybrid optical sensor based on dithizone impregnation on mesoporous SBA‐15 for simultaneous detection and removal of Pb(II) ions from water samples: Response‐surface methodology

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