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Elik A, Fesliyan S, Gürsoy N, Haq HU, Castro-Muñoz R, Altunay N. An air-assisted dispersive liquid phase microextraction method based on a hydrophobic magnetic deep eutectic solvent for the extraction and preconcentration of melamine from milk and milk-based products. Food Chem 2023; 426:136573. [PMID: 37329792 DOI: 10.1016/j.foodchem.2023.136573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 06/19/2023]
Abstract
In the current research, a fast and sustainable air-assisted hydrophobic magnetic deep eutectic solvent-based dispersive liquid phase microextraction followed by UV-Vis spectrophotometry measurements was optimized for the extraction and determination of melamine in milk and milk-based products. The central composite design was applied for the optimization of factors affecting the recovery of melamine. Quantitative extraction of melamine was achieved using hydrophobic magnetic deep eutectic solvents prepared from a mixture of octanoic acid, aliquat-336, and cobalt(II) chloride. The optimum conditions for extraction were found as follows: 6 extraction cycles, pH 8.2, extraction solvent volume 260 µL, and acetone volume 125 µL.Interestingly, a centrifugation step was not required to achieve phase separation. Under the optimum conditions, melamine was determined in the linear range of 3-600 ng mL-1, the limit of detection (3Sblank/m) of 0.9 ng mL-1, and the enrichment factor of 144. The validation of the method was investigated by the analysis of reference materials. Consequently, the method was successfully applied for the analysis of melamine residues in milk and milk-based products.
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Affiliation(s)
- Adil Elik
- Faculty of Science, Department of Chemistry, Sivas Cumhuriyet University, Sivas, Türkiye
| | - Seçkin Fesliyan
- Faculty of Science, Department of Chemistry, Sivas Cumhuriyet University, Sivas, Türkiye
| | - Nevcihan Gürsoy
- Nanotechnology Engineering, Sivas Cumhuriyet University, Sivas, Türkiye
| | - Hameed Ul Haq
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Department of Sanitary Engineering, 80-233 Gdansk, G. Narutowicza St. 11/12, Poland
| | - Roberto Castro-Muñoz
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Department of Sanitary Engineering, 80-233 Gdansk, G. Narutowicza St. 11/12, Poland
| | - Nail Altunay
- Faculty of Science, Department of Chemistry, Sivas Cumhuriyet University, Sivas, Türkiye.
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Patyra E, Kwiatek K. Analytical capabilities of micellar liquid chromatography and application to residue and contaminant analysis: A review. J Sep Sci 2021; 44:2206-2220. [PMID: 33811781 DOI: 10.1002/jssc.202001261] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 12/11/2022]
Abstract
Green chemistry is the use of chemistry to reduce or eliminate the use of generation of feedstocks, products, by-products, solvents, reagents, etc. that are hazardous to human health or the environment. One of the branches of green chemistry is micellar liquid chromatography. Micellar liquid chromatography is a reversed-phase liquid chromatographic mode with mobile phases containing a surfactant above its critical micellar concentration. The applications of micellar liquid chromatography for the determination of numerous compounds in pharmaceutical formulation, biological samples, food, environmental samples, and feeds have been growing rapidly. Micellar liquid chromatography technique has several advantages over other chromatographic techniques. Its main advantage is the small amount of organic modifiers used such as acetonitrile and methanol and the safety and recyclability of the mobile phase. In our work, we discuss the development of "green chemistry" and present what micellar liquid chromatography is. This article presents application methods with the use of micellar liquid chromatography for analysis on antibacterial substances, melamine, biogenic amines, plant protection products, flavonoids, as well as peptides in biological matrices such as milk, eggs, tissues, honey, and feed.
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Affiliation(s)
- Ewelina Patyra
- Department of Hygiene of Animal Feedingstuffs, National Veterinary Research Institute, Pulawy, Poland
| | - Krzysztof Kwiatek
- Department of Hygiene of Animal Feedingstuffs, National Veterinary Research Institute, Pulawy, Poland
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Altunay N, Elik A, Kaya S. A simple and quick ionic liquid-based ultrasonic-assisted microextraction for determination of melamine residues in dairy products: Theoretical and experimental approaches. Food Chem 2020; 326:126988. [DOI: 10.1016/j.foodchem.2020.126988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 05/03/2020] [Accepted: 05/04/2020] [Indexed: 12/28/2022]
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Albishri HM, Almalawi AM, Alshitari W, El-Hady DA. Cyclodextrin-Modified Micellar UPLC for Direct, Sensitive and Selective Determination of Water Soluble Vitamins in Milk. J Chromatogr Sci 2020; 58:203-210. [PMID: 31769787 DOI: 10.1093/chromsci/bmz090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/02/2019] [Accepted: 09/27/2019] [Indexed: 11/13/2022]
Abstract
Cyclodextrin-modified micellar ultra pressure liquid chromatography (CD-MUPLC) was firstly developed and directly applied to the simultaneous determination of water-soluble vitamins thiamine hydrochloride (VB1), pyridoxine hydrochloride (VB6) and ascorbic acid (VC) in milk samples. A hybrid isocratic mobile phase consisting of β-cyclodextrin (β-CD, 5.0 mmol L-1) and cetyltrimethylammonium bromide (CTAB, 0.1 mol L-1) in the presence of acetic acid (0.1 mol L-1) at pH 2.9 on a RP-C18 column at 25.0°C was successfully used. The separation of vitamins was achieved in less than 10 min at a 0.2 mL min-1 flow rate showing adequate linearity at 245 nm in the ranges of 5.0-500.0 μg L-1 for VB1, 5.0-1000.0 μg L-1 for VB6 and 5.0-10000.0 μg L-1 for VC with coefficients of variation (r2) of 0.9999, 0.9987 and 0.9971, respectively. In addition, limits of detection obtained were 0.885, 1.352 and 1.358 μg L-1 and limits of quantification were 2.681, 4.096 and 4.115 μg L-1 for VB1, VB6 and VC, respectively. The high sensitivity of the proposed CD-MUPLC-UV method permitted its applications to the determination of water-soluble vitamins VB1 (32-488 μg L-1), VB6 (82-95 μg L-1) and VC (790-45000 μg L-1) in breast and bovine milk samples. The relative standard deviations and recoveries ranged between 0.07 and 2.14% and between 85.27 and 114.8%, respectively, indicating the accurate and precise measurements without any negative impact of matrix. The current analytical method illustrated several advantages including direct, sensitive, selective and non-consuming organic solvents over the hitherto published methods. These features could be attributed to the four-point competitive interactions among analytes, pseudostationary phases and modified C18 stationary phases.
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Affiliation(s)
- Hassan M Albishri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Solimania, 80203 Jeddah, Saudi Arabia
| | - Abdullah M Almalawi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Solimania, 80203 Jeddah, Saudi Arabia
| | - Wael Alshitari
- Chemistry Department, Faculty of Science, University of Jeddah, Osfan road, P.O. 80327, 21589 Jeddah, Saudi Arabia
| | - Deia Abd El-Hady
- Chemistry Department, Faculty of Science, University of Jeddah, Osfan road, P.O. 80327, 21589 Jeddah, Saudi Arabia
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Ramezani AM, Ahmadi R, Absalan G. Designing a sustainable mobile phase composition for melamine monitoring in milk samples based on micellar liquid chromatography and natural deep eutectic solvent. J Chromatogr A 2019; 1610:460563. [PMID: 31564559 DOI: 10.1016/j.chroma.2019.460563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022]
Abstract
Modified micellar liquid chromatography (MLC) with a natural deep eutectic solvent (NADES), produced from choline chloride (ChCl) and ethylene glycol (EG), was employed for melamine (MEL) monitoring in milk matrix. This sustainable mobile phase was attained through chemometrical optimization of crucial variables including concentration of sodium dodecyl sulphate ([SDS]) along with volume percentages of both NADES and glacial acetic acid (GAC). The desirability function and central composite design were utilized as chemometrical tools. Retention time (tR-MEL), and chromatographic peak width of MEL at 50% of its height (W50%-MEL) were considered for finding the best possible arrangement of the influential factors in the configuration of the mobile phase. Under the optimal experimental conditions of 0.10 mol L-1 SDS, 4% (v/v) NADES, and 4% (v/v) GAC, the results showed that both tR-MEL and W50%-MEL drastically decreased when NADES was a part of the mobile phase composition. This indicated that ChCl-EG-based NADES had a significant impact on improving the chromatographic behaviour of an ionizable polar compound, MEL. At the optimal point, MEL was eluted in approximately 10 min without being interfered by coexisting proteins and endogenous species in milk. The practical performance of the mobile phase was established through direct injection of milk samples into the MLC system. The eligibility criteria of the United State-Food and Drug Administration (US-FDA) were considered for validation of the introduced methodology.
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Affiliation(s)
- Amir M Ramezani
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran
| | - Raheleh Ahmadi
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran
| | - Ghodratollah Absalan
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
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Peris-Vicente J, Iborra-Millet JJ, Albiol-Chiva J, Carda-Broch S, Esteve-Romero J. A rapid and reliable assay to determine flumequine, marbofloxacin, difloxacin, and sarafloxacin in commonly consumed meat by micellar liquid chromatography. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:1375-1383. [PMID: 30120781 DOI: 10.1002/jsfa.9314] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/05/2018] [Accepted: 08/13/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Micellar liquid chromatography - fluorescence detection was used to determine the antibiotics flumequine, marbofloxacin, difloxacin, and sarafloxacin in porcine, bovine, poultry, ovine, caprine, rabbit, and equine meat, to verify compliance with EU Regulation 37/2010 with regard to the occurrence of veterinary drugs in food. RESULTS The analytes were isolated from the matrix by ultrasonication-assisted leaching in a micellar solution, and the supernatant was filtered and directly injected. The fluoroquinolones were resolved in < 19 min using a C18 column, with an isocratic mobile phase of 0.05 mol L-1 sodium dodecyl sulfate - 8% 1-butanol - 0.5% triethylamine buffered at pH 3. The limits of quantification (0.01-0.05 mg kg-1 ) were below the maximum residue limits (0.15-0.4 mg kg-1 ). The method was validated by EU Commission Decision 2002/657/EC guidelines. CONCLUSION The method shows practical advantages such as simplicity, low cost, eco-friendliness, safety, and applicability for routine analysis, and is useful for surveillance programs. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Juan Peris-Vicente
- Química Bioanalítica, Department of Physical and Analytical Chemistry, ESTCE, Universitat Jaume I, Castelló, Spain
| | | | - Jaume Albiol-Chiva
- Química Bioanalítica, Department of Physical and Analytical Chemistry, ESTCE, Universitat Jaume I, Castelló, Spain
| | - Samuel Carda-Broch
- Química Bioanalítica, Department of Physical and Analytical Chemistry, ESTCE, Universitat Jaume I, Castelló, Spain
| | - Josep Esteve-Romero
- Química Bioanalítica, Department of Physical and Analytical Chemistry, ESTCE, Universitat Jaume I, Castelló, Spain
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Melamine Detection in Milk and Dairy Products: Traditional Analytical Methods and Recent Developments. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0984-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Development and validation of a micellar liquid chromatographic method to determine three antitumorals in plasma. Bioanalysis 2017; 9:799-812. [DOI: 10.4155/bio-2017-0028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Aim: A micellar liquid chromatographic method to determine several anticancer drugs (pazopanib, dabrafenib and regorafenib) in plasma was developed and validated by the guidelines of the EMA. Experimental: Plasma samples were directly injected, after a 1/5-dilution in a micellar solution. The drugs were resolved in <18 min using a C18 column. The mobile phase was an aqueous solution of 0.12 M SDS – 2% 1-pentanol, buffered at pH 7. The detection was performed by absorbance at 260 nm. Results: The values of the main validation parameters were: LOD (0.1–1 mg/l), calibration range (0.2–2 to 80 mg/l), accuracy (-12.5 to +11.7%) and precision (<11.9%). Conclusion: The procedure was conducted by minimum cost, effort, manipulation, time and quantity of hazardous chemicals. The method was useful to determine the drugs at their respective target concentrations, and was found useful for clinical analysis.
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Tayeb-Cherif K, Peris-Vicente J, Carda-Broch S, Esteve-Romero J. Use of micellar liquid chromatography to analyze oxolinic acid, flumequine, marbofloxacin and enrofloxacin in honey and validation according to the 2002/657/EC decision. Food Chem 2016; 202:316-23. [DOI: 10.1016/j.foodchem.2016.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 10/18/2015] [Accepted: 02/01/2016] [Indexed: 10/22/2022]
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El-sheikh AH, Al-degs YS, Abu-Wardeh AH, Al-ghouti MA. Quantification of Melamine in Milk and Dairy Products by Liquid Chromatography after a Simple Sample Clean-Up Procedure. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.12867] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Amjad H. El-sheikh
- Chemistry Department; The Hashemite University; P.O. Box 150459 Zarqa Jordan
| | - Yahya S. Al-degs
- Chemistry Department; The Hashemite University; P.O. Box 150459 Zarqa Jordan
| | | | - Mohammad A. Al-ghouti
- Department of Biological and Environmental Sciences, College of Arts and Sciences; Qatar University; State of Qatar P.O. Box 2713 Doha Qatar
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Tolba MM, Salim MM. Derivative Quotient Spectrophotometry and an Eco-Friendly Micellar Chromatographic Approach with Time-Programmed UV-Detection for the Separation of Two Fluoroquinolones and Phenazopyridine. J Chromatogr Sci 2016; 54:776-89. [DOI: 10.1093/chromsci/bmw010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Indexed: 11/13/2022]
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12
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Peris-Vicente J, Marzo-Mas A, Roca-Genovés P, Carda-Broch S, Esteve-Romero J. Use of micellar liquid chromatography for rapid monitoring of fungicides post harvest applied to citrus wastewater. J Environ Sci (China) 2016; 42:284-292. [PMID: 27090721 DOI: 10.1016/j.jes.2015.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 11/30/2015] [Accepted: 12/16/2015] [Indexed: 06/05/2023]
Abstract
A method based on micellar liquid chromatography has been developed to simultaneously monitor four pesticides largely post-harvest applied to citrus: thiabendazole, pyrimethanil, o-phenylphenol and imazalil. Water samples were filtered and directly injected without other treatment, thus avoiding extraction steps. The composition of the mobile phase was optimized using a chemometrical approach to achieve and excellent resolution to 0.07 mol/L SDS/5%, V/V 1-pentanol buffered at pH3. Mobile phase run through a C18 column at 1 mL/min at room temperature. The detection was performing by UV-Visible absorbance using a wavelength program: 0-10 min, 305 nm (for thiabendazole); 10-12; 265 nm (for pyrimethanil) and 12-18, 220 nm (o-phenylphenol and imazalil). The developed method was validated following the guidelines of the US Environmental Protection Agency in terms of: quantitation range, (0.5-4 to 15 μg/mL), linearity (r(2)>0.9995), sensitivity (LOD, 0.18-1.4 μg/mL), precision (<9.2%), trueness (93.9%-103.7%), and ruggedness (<9.9%). It was found that the fungicides remain up to eight days in surface water at outdoor conditions. The method was used to screen the presence of the analytes in several waste water samples, and was proved to be useful in routine analysis.
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Affiliation(s)
- Juan Peris-Vicente
- Departamento de Química Física i Analítica, ESTCE, Universitat Jaume I, 12071 Castelló, Spain.
| | - Ana Marzo-Mas
- Departamento de Química Física i Analítica, ESTCE, Universitat Jaume I, 12071 Castelló, Spain
| | - Pasqual Roca-Genovés
- Departamento de Química Física i Analítica, ESTCE, Universitat Jaume I, 12071 Castelló, Spain
| | - Samuel Carda-Broch
- Departamento de Química Física i Analítica, ESTCE, Universitat Jaume I, 12071 Castelló, Spain
| | - Josep Esteve-Romero
- Departamento de Química Física i Analítica, ESTCE, Universitat Jaume I, 12071 Castelló, Spain
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Peris-Vicente J, Albiol-Chiva J, Roca-Genovés P, Esteve-Romero J. Advances on melamine determination by micellar liquid chromatography: A review. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1152482] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Juan Peris-Vicente
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Jaume Albiol-Chiva
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Pasqual Roca-Genovés
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Josep Esteve-Romero
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
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Decorating carbon nanotubes with nanoparticles of indium tin oxide for the voltammetric determination of metaproterenol. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.09.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Analysis of epinephrine, norepinephrine, and dopamine in urine samples of hospital patients by micellar liquid chromatography. Anal Bioanal Chem 2015; 407:9009-18. [DOI: 10.1007/s00216-015-9066-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/15/2015] [Accepted: 09/17/2015] [Indexed: 01/01/2023]
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Dong YM, An Q, Lu NW, Li N. Development micellar HPLC method for simultaneous determination of ephedrine, pseudoephedrine, and methylephedrine in Ephedra Herb and traditional Chinese medicinal preparations. ACTA CHROMATOGR 2015. [DOI: 10.1556/achrom.27.2015.2.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Peris-Vicente J, Carda-Broch S, Esteve-Romero J. Quantification of tamoxifen in pharmaceutical formulations using micellar liquid chromatography. ANAL SCI 2015; 30:925-30. [PMID: 25213822 DOI: 10.2116/analsci.30.925] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This paper describes a micellar liquid chromatographic method used to analyze tamoxifen (TAMO) in pharmaceutical formulations, while focusing in its interesting features. Solid samples were solved in a micellar solution, irradiated at 254 nm, filtered and injected. Extraction steps were avoided and thus expediting the procedure. Tamoxifen was resolved in <5 min, using a mobile phase containing 0.15 M sodium dodecyl sulfate-7% pentanol at pH 3, running at 1.5 mL/min under an isocratic mode at 40°C through a C18 column. Detection was achieved by fluorescence by excitation at 260 nm and emission at 380 nm. The validation was performed following the requirements of the International Conference on Harmonization (ICH) Tripartite Guidelines in terms of: specificity, sensitivity, calibration range (0.2 - 20 mg/L), accuracy (98.8 - 101.7%), precision (<1.5%) and robustness (<6.2%). The method was applied to quantify TAMO in TAMO citrate tablets supplied in Spain, and was found appropriate for the quality control of TAMO formulations.
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Finete VDLM, Gouvêa MM, Marques FFDC, Pereira Netto AD. Validation of a method of high performance liquid chromatography with fluorescence detection for melamine determination in UHT whole bovine milk. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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A fast and environmental friendly analytical procedure for determination of melamine in milk exploiting fluorescence quenching. Food Chem 2015; 169:314-9. [DOI: 10.1016/j.foodchem.2014.07.144] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 07/02/2014] [Accepted: 07/30/2014] [Indexed: 11/17/2022]
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Romero-Cano R, Kassuha D, Peris-Vicente J, Roca-Genovés P, Carda-Broch S, Esteve-Romero J. Analysis of thiabendazole, 4-tert-octylphenol and chlorpyrifos in waste and sewage water by direct injection – micellar liquid chromatography. Analyst 2015; 140:1739-46. [DOI: 10.1039/c4an01782j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A micellar liquid chromatographic method has been developed for the simultaneous quantification of the pesticides thiabendazole and chlorpyrifos, and the surfactant 4-tert-octylphenol in water.
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Affiliation(s)
- Ricard Romero-Cano
- Departament de Química Física i Analítica
- ESTCE
- Universitat Jaume I
- 12074 Castelló
- Spain
| | - Diego Kassuha
- Química Biológica y Farmacología
- Facultad de Ciencias de la Alimentación
- Bioquímicas y Farmacéuticas
- Universidad Católica de Cuyo
- San Juan
| | - Juan Peris-Vicente
- Departament de Química Física i Analítica
- ESTCE
- Universitat Jaume I
- 12074 Castelló
- Spain
| | - Pasqual Roca-Genovés
- Departament de Química Física i Analítica
- ESTCE
- Universitat Jaume I
- 12074 Castelló
- Spain
| | - Samuel Carda-Broch
- Departament de Química Física i Analítica
- ESTCE
- Universitat Jaume I
- 12074 Castelló
- Spain
| | - Josep Esteve-Romero
- Departament de Química Física i Analítica
- ESTCE
- Universitat Jaume I
- 12074 Castelló
- Spain
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Development and validation of a micellar liquid chromatography-based method to quantify melamine in swine kidney. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.05.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Batista AD, Nascimento CF, Melchert WR, Rocha FR. Expanding the separation capability of sequential injection chromatography: Determination of melamine in milk exploiting micellar medium and on-line sample preparation. Microchem J 2014. [DOI: 10.1016/j.microc.2014.06.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Use of micellar liquid chromatography to analyze darunavir, ritonavir, emtricitabine, and tenofovir in plasma. J Sep Sci 2014; 37:2825-32. [DOI: 10.1002/jssc.201400574] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/24/2014] [Accepted: 07/24/2014] [Indexed: 11/07/2022]
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25
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Peris-Vicente J, Villareal-Traver M, Casas-Breva I, Carda-Broch S, Esteve-Romero J. A micellar liquid chromatography method for the quantification of abacavir, lamivudine and raltegravir in plasma. J Pharm Biomed Anal 2014; 98:351-5. [DOI: 10.1016/j.jpba.2014.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/03/2014] [Accepted: 06/05/2014] [Indexed: 11/28/2022]
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Agrawal N, Esteve-Romero J, Bose D, Dubey NP, Peris-Vicente J, Carda-Broch S. Determination of selective serotonin reuptake inhibitors in plasma and urine by micellar liquid chromatography coupled to fluorescence detection. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 965:142-9. [DOI: 10.1016/j.jchromb.2014.06.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 05/24/2014] [Accepted: 06/25/2014] [Indexed: 11/26/2022]
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Application of micellar liquid chromatography for the determination of antitumoral and antiretroviral drugs in plasma. Bioanalysis 2014; 6:1975-88. [DOI: 10.4155/bio.14.154] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In micellar liquid chromatography, the mobile phase is made of a surfactant and, eventually, an alcohol. This article describes several methods to measure the concentration of antitumoral and antiretroviral drugs in plasma, utilizing micellar liquid chromatography. Samples can be injected after dilution with a micellar solution and filtration, because proteins and other endogenous compounds are solubilized in micellar medium. We will discuss the following optimized parameters: dilution ratio, type of column, detection conditions and mobile phase composition. This article will also cover the validation performed following the International Conference on Harmonization guidelines and the results reported in the literature, indicating that the methods are useful for the routine analysis of plasma samples for clinical purposes.
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Abd El-Hady D, Albishri HM. CYCLODEXTRIN MODIFIED MICELLAR LIQUID CHROMATOGRAPHY FOR DETERMINATION OF HYDROCHLOROTHIAZIDE AND CEFDITOREN PIVOXEL IN BIOLOGICAL FLUIDS AND TABLETS. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.864975] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Deia Abd El-Hady
- a Chemistry Department, Faculty of Science-North Jeddah , King Abdulaziz University , Saudi Arabia
- b Chemistry Department, Faculty of Science , Assiut University , Assiut , Egypt
| | - Hassan M. Albishri
- c Chemistry Department, Faculty of Science , King Abdulaziz University , Saudi Arabia
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Agrawal N, Marco-Peiró S, Esteve-Romero J, Durgbanshi A, Bose D, Peris-Vicente J, Carda-Broch S. Determination of paroxetine in blood and urine using micellar liquid chromatography with electrochemical detection. J Chromatogr Sci 2014; 52:1217-23. [PMID: 24448669 DOI: 10.1093/chromsci/bmt200] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Paroxetine is a potent selective serotonin reuptake inhibitor used for the treatment of depression and related mood disorders. A micellar liquid chromatographic method was developed for the determination of paroxetine in serum and urine. Detection of paroxetine was carried out using a C18 column and a mobile phase of 0.15 M sodium dodecyl sulfate, 6% 1-pentanol at pH 3 (buffer salt 0.01 M NaH2PO4) running under isocratic mode at 1.0 mL/min and electrochemical detection at 0.8 V. The analyte was eluted without interferences in <15 min. The proposed methodology was validated under the guidelines of the International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use in matrix in terms of specificity, linearity (r(2) > 0.9999; 0.5-5 μg/mL range), accuracy (88-97.5%, recovery), repeatability (RSD < 0.54%), intermediate precision (RSD < 0.54%), limit of detection and quantification (0.001 and 0.005 μg/mL, respectively) and robustness (RSD < 3.63%). Developed method was successfully applied to real blood and urine samples as well as in spiked serum and urine samples. The developed method was specific, rapid, precise, reliable, accurate, inexpensive and then suitable for routine analysis of paroxetine in monitorized samples.
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Affiliation(s)
- Nitasha Agrawal
- Department of Criminology and Forensic Sciences, Dr. H.S. Gour University, Sagar, India
| | | | | | - Abhilasha Durgbanshi
- Department of Criminology and Forensic Sciences, Dr. H.S. Gour University, Sagar, India
| | - Devasish Bose
- Department of Criminology and Forensic Sciences, Dr. H.S. Gour University, Sagar, India
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Duan J, He D, Wang W, Liu Y, Wu H, Wang Y, Fu M, Li S. The fabrication of nanochain structure of gold nanoparticles and its application in ractopamine sensing. Talanta 2013; 115:992-8. [DOI: 10.1016/j.talanta.2013.04.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 04/15/2013] [Accepted: 04/21/2013] [Indexed: 10/26/2022]
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31
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Glassy carbon electrode modified with gold nanoparticles for ractopamine and metaproterenol sensing. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.04.057] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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32
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Yang RY, Ouyang XL, Gan DH, Wang HS, Li YZ, Pan YM. Isolation and Determination of Iridoid Glycosides from the Seeds ofOsmanthus fragransby HPLC. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.738346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Xu Q, Wei HP, Du S, Li HB, Ji ZP, Hu XY. Detection of subnanomolar melamine based on electrochemical accumulation coupled with enzyme colorimetric assay. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1810-1817. [PMID: 23373873 DOI: 10.1021/jf304034e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Based on the synergetic effect of the electrochemical accumulation process and the signal amplification of enzymes, a new sensitive method has been developed for the detection of subnanomolar melamine. There are two steps involved in the sensor construction process: (1) accumulation of melamine on an electrode by cyclic voltammetric method and (2) chemical coupling of horseradish peroxidase (HRP) with the accumulated melamine through the linkage of glutaraldehyde. The coupled HRP catalyzes the oxidation of guaiacol to generate an amber-colored product. Quantitative analysis of melamine is performed by measuring the absorption intensities of the colored product. Under the optimal conditions, the method showed a wide linearity in the concentration range from 1.0 × 10(-11) to 1.0 × 10(-8) M for melamine detection. Moreover, it has been successfully applied to detect melamine in different infant formula powders and fish feed samples.
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Affiliation(s)
- Qin Xu
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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Wang P, Dong JX, Li NB, Luo HQ. Highly sensitive detection of melamine based on gemini surfactant using enhanced resonance Rayleigh scattering signals. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 103:38-44. [PMID: 23257328 DOI: 10.1016/j.saa.2012.10.067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 10/09/2012] [Accepted: 10/25/2012] [Indexed: 06/01/2023]
Abstract
We present here a resonance Rayleigh scattering (RRS) spectrum method for the determination of melamine at the nanogram level using a gemini surfactant (disodium 4-dodecyl-2,4'-oxydibenzenesulfonate, DDOF). It was found that DDOF could react with cationic melamine to form an ion-association complex, which induced the enhancement of RRS intensity and the appearance of a new RRS spectrum in acetate buffer (pH 3.6). The RRS spectral characteristics of the melamine-DDOF system, the optimum conditions of the reaction, and the influencing factors have been investigated. Under optimum conditions, the enhanced RRS intensity was proportional to the concentration of melamine in the range of 0.38-6.30 μg/mL. The method has high sensitivity, and the detection limit for melamine is 8.48 ng/mL. Furthermore, the reaction mechanism and the reasons of RRS enhancement were evaluated.
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Affiliation(s)
- Peng Wang
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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Nasr JJ, Shalan S, Belal F. Determination of Carbadox and Olaquindox Residues in Chicken Muscles, Chicken Liver, Bovine Meat, Liver and Milk by MLC with UV Detection: Application to Baby Formulae. Chromatographia 2013. [DOI: 10.1007/s10337-013-2405-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Evaluation of biogenic amines in fish sauce by derivatization with 3,5-dinitrobenzoyl chloride and micellar liquid chromatography. J Food Compost Anal 2013. [DOI: 10.1016/j.jfca.2012.09.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Abstract
The validation of several micellar LC-based analytical methodologies was described. These methods were able to quantify quinolones in fish from fisheries, hydroxytyrosol in olive extracts and biogenic amines in anchovy sauce. The validation was performed following the requirements of official guides to provide more reliability. Two guides suggested by renowned institution are described: US FDA Guidance for Industry and EU Regulation 2002/657/EC Decision. The appropriate guide was used for each method, depending of the analyte, the matrix and the scope of sample. The calculated validation parameters were those proposed by the guide: selectivity, calibration range, linearity, LOD and LOQ, inter- and intra-day accuracy and precision, limit of decision, detection capability, robustness, recovery and stability. The methodologies were successfully validated by the selected guideline, indicating their suitability to be applied to analysis of real samples, proven to be useful to its intended purpose.
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Liu W, Cohenford MA, Frost L, Seneviratne C, Dain JA. Non-enzymatic glycation of melamine with sugars and sugar like compounds. Bioorg Chem 2013; 46:1-9. [DOI: 10.1016/j.bioorg.2012.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 08/28/2012] [Indexed: 10/27/2022]
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Determination of Ethopabate Residues in Chicken Muscles, Liver, and Eggs after Aqueous SDS Extraction by Micellar Liquid Chromatography with Fluorescence Detection with Application to Baby Food. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9564-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Belal F, El-Brashy AM, El-Enany N, Tolba MM. RATIO DERIVATIVE SPECTROPHOTOMETRIC AND MICELLAR LIQUID CHROMATOGRAPHIC METHODS FOR THE SIMULTANEOUS DETERMINATION OF HYDROCHLOROTHIAZIDE AND PINDOLOL IN PHARMACEUTICAL PREPARATIONS. J LIQ CHROMATOGR R T 2012. [DOI: 10.1080/10826076.2011.627601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- F. Belal
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
| | - A. M. El-Brashy
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
| | - N. El-Enany
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
| | - M. M. Tolba
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
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Filazi A, Sireli UT, Ekici H, Can HY, Karagoz A. Determination of melamine in milk and dairy products by high performance liquid chromatography. J Dairy Sci 2012; 95:602-8. [PMID: 22281324 DOI: 10.3168/jds.2011-4926] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 10/13/2011] [Indexed: 11/19/2022]
Abstract
A simple, precise, accurate, and validated reverse-phase HPLC method was developed for the determination of melamine in milk (pasteurized and UHT milk) and dairy products (powdered infant formula, fruit yogurt, soft cheese, and milk powder). Following extraction with acetonitrile:water (50:50, vol/vol), samples were purified by filter (0.45 μm), separated on a Nucleosil C8 column (4.6 mm × 250 mm, 3 μm) with acetonitrile:10 mmol/L sodium L-octane sulfonate (pH 3.1; 15:85, vol/vol) as mobile phase at a flow rate of 1 mL/min, and determined by a photodiode array detector. A linear calibration curve was obtained in the concentration range from 0.05 to 5 mg/kg. Milk and dairy products were fortified with melamine at 4 levels producing average recovery yields of 95 to 109%. The limits of detection and quantification of melamine were 35 to 110 and 105 to 340 μg/kg, respectively. The method was then used to analyze 300 samples of milk and dairy products purchased from major retailers in Turkey. Melamine was not found in infant formulas and pasteurized UHT milk, whereas 2% of cheese, 8% of milk powder, and 44% of yogurt samples contained melamine at the 121, 694±146, and 294±98 μg/kg levels, respectively. These findings were below the limits set by the Codex Alimentarius Commission and European Union legislation. This is the first study to confirm the existence of melamine in milk and dairy products in Turkey. Consumption of foods containing these low levels of melamine does not constitute a health risk for consumers.
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Affiliation(s)
- A Filazi
- Department of Pharmacology and Toxicology, Ankara University, Faculty of Veterinary Medicine, Ankara, Turkey 06110.
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42
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Yazgan NN, Boyacı İH, Topcu A, Tamer U. Detection of melamine in milk by surface-enhanced Raman spectroscopy coupled with magnetic and Raman-labeled nanoparticles. Anal Bioanal Chem 2012; 403:2009-17. [DOI: 10.1007/s00216-012-5971-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 03/20/2012] [Accepted: 03/22/2012] [Indexed: 11/29/2022]
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43
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Micellar Liquid Chromatography Determination of Spermine in Fish Sauce after Derivatization with 3,5-Dinitrobenzoyl Chloride. ACTA ACUST UNITED AC 2012. [DOI: 10.1155/2012/421909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A practical liquid chromatographic method has been developed for the selective determination of the levels of spermine in anchovy sauce after derivatization with 3,5 dinitrobenzoyl chloride. The micellar liquid chromatographic separation proposed here uses a C18 column (125×4.6 mm), followed by detection of spermine derivative at 260 nm. Elution of the analyte was performed using a mobile phase of 0.15 M SDS-4% (v/v) 1-pentanol-pH 7 running under isocratic mode at 25°C. Validation parameters were linearity (2–100 μg/mL, R2>0.999), detection and quantification limits (0.4 and 1.2 μg/mL, resp.), precision (less than 3.6%), accuracy (93.3–101.1%), and robustness (less than 4.8%). These results are in agreement with the requirements of the FDA guidelines. The proposed method was successfully applied to the monitorization of spermine formation in unsalted and salted fish sauce samples. The suggested methodology was found useful in routine analysis of spermine in fish sauce samples.
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Furusawa N. A 100% Water Mobile Phase HPLC-PDA Analysis of Meamine and Related Analogues. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ajac.2012.34040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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45
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Casas-Breva I, Peris-Vicente J, Rambla-Alegre M, Carda-Broch S, Esteve-Romero J. Monitoring of HAART regime antiretrovirals in serum of acquired immunodeficiency syndrome patients by micellar liquid chromatography. Analyst 2012; 137:4327-34. [DOI: 10.1039/c2an35298b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Beltrán-Martinavarro B, Peris-Vicente J, Marco-Peiró S, Esteve-Romero J, Rambla-Alegre M, Carda-Broch S. Use of micellar mobile phases for the chromatographic determination of melamine in dietetic supplements. Analyst 2012; 137:269-74. [DOI: 10.1039/c1an15622e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Marco-Peiró S, Beltrán-Martinavarro B, Rambla-Alegre M, Peris-Vicente J, Esteve-Romero J. Validation of an analytical methodology to quantify melamine in body fluids using micellar liquid chromatography. Talanta 2012; 88:617-22. [DOI: 10.1016/j.talanta.2011.11.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Revised: 11/09/2011] [Accepted: 11/16/2011] [Indexed: 10/15/2022]
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48
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Analytical determination of hydroxytyrosol in olive extract samples by micellar liquid chromatography. Food Chem 2011; 129:614-618. [DOI: 10.1016/j.foodchem.2011.04.075] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 02/03/2011] [Accepted: 04/24/2011] [Indexed: 11/18/2022]
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49
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Pappa-Louisi A, Agrafiotou P, Georgiadis I. Separation optimization in reversed-phase liquid chromatography by using alkanol additives in the mobile phase: application to amino acids. Talanta 2011; 85:2241-5. [PMID: 21872084 DOI: 10.1016/j.talanta.2011.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 06/14/2011] [Accepted: 07/07/2011] [Indexed: 10/18/2022]
Abstract
In an effort to enhance complex mixture separations by using small amounts of a homologous series of alkanols as additives in the mobile phases, it was proposed an optimization algorithm based on a sixth-parameter retention model. This model considers simultaneously the contents of the main organic modifier and of the alkanol additive in the mobile phase as well as of the number of alkyl chain of the additive. This model is in fact a modification of a previously one derived in a recently published paper for the retention description of a mixture of purely hydrophobic alkylbenzenes under isocratic conditions with mobile phases containing alkanol additives. The effectiveness of the new retention model as well as the optimization algorithm was successfully applied to the separation of ten o-phthalaldehyde (OPA) derivatives of amino acids. Indeed, the new retention model exhibited an excellent prediction performance since the obtained overall predictive error between calculated and experimental times was only 2.8% for all isocratic runs by using a variety of mobile phase compositions containing any alkanol homologue even different than those used in the starting/fitting experiments. Moreover, a perfect resolution of the above amino acid mixture was achieved within only 7.4 min in the chromatogram recorded using the optimal mobile phase determined by means of the simple optimization algorithm proposed in this study.
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Affiliation(s)
- A Pappa-Louisi
- Laboratory of Physical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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50
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Chao YY, Lee CT, Wei YT, Kou HS, Huang YL. Using an on-line microdialysis/HPLC system for the simultaneous determination of melamine and cyanuric acid in non-dairy creamer. Anal Chim Acta 2011; 702:56-61. [DOI: 10.1016/j.aca.2011.06.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 05/28/2011] [Accepted: 06/14/2011] [Indexed: 10/18/2022]
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