[1] | "Determination of fluoride ions by single column high pressure anion chromatography in dentifrice preparations and body fluids: saliva and blood serum" V. F. Samanidou, C. K. Zacharis and I. N. Papadoyannis* J. Liq. Chrom. & Rel. Technol., 25 (2002), 803-818 |
[2] | "Automated Sample Preparation Based on the Sequential Injection Principle. Solid Phase Extraction on a Molecularly Imprinted Polymer Coupled On-line to HPLC" Georgios A. Theodoridis*, Constantinos K. Zacharis, Paraskevas D. Tzanavaras, Demetrius G. Themelis, Anastasios Economou J. Chromatogr. A, 1030 (2004) 69-76. |
[3] | "Rapid spectrofluorimetric determination of lisinopril in pharmaceutical tablets using sequential injection analysis" Constantinos K. Zacharis, Paraskevas D. Tzanavaras, Demetrius G. Themelis*, Georgios A. Theodoridis, Anastasios Economou, Pantelis G. Rigas Anal. Bioanal. Chem. 379 (2004) 759-763 |
[4] | "On-line coupling of Sequential Injection with High Performance Liquid Chromatography for the automated derivatization and determination of γ¬-aminobutyric acid in human biological fluids" Constantinos K. Zacharis, Georgios A. Theodoridis*, Anastasios N. Voulgaropoulos J. Chromatogr. B, 808 (2004) 169-175 |
[5] | "Normal spectrophotometric and stopped-flow spectrofluorimetric sequential injection methods for the determination of alendronic acid, an anti-osteoporosis amino-bisphosphonate drug, in pharmaceuticals" Paraskevas D. Tzanavaras, Constantinos K. Zacharis, Georgios A. Theodoridis*, Eftichios A. Kalaitzantonakis and Anastasios N. Voulgaropoulos Anal. Chim. Acta, 547 (2005) 98-103 |
[6] | "Coupling of sequential injection with liquid chromatography for the automated derivatization and on-line determination of amino acids" Constantinos K. Zacharis, Georgios A. Theodoridis*, Anastasios N. Voulgaropoulos Talanta, 69 (2006) 841-847 |
[7] | "Incorporation of a monolithic column into sequential injection system for drug-protein binding studies" Constantinos K. Zacharis, Georgios A. Theodoridis*, Ales Podgornik, Anastasios N. Voulgaropoulos J. Chromatogr. A, 1121 (2006) 46-54 |
[8] | "Coupling of sequential injection analysis and capillary electrophoresis-Laser-induced fluorescence via a valve interface for on-line derivatization and analysis of amino acids and peptides" Constantinos K. Zacharis, F. W. Alexander Tempels, Georgios A. Theodoridis*, Anastasios N. Voulgaropoulos, Willy J. M. Underberg, Govert W. Somsen, Gerhardus J. de Jong J. Chromatogr. A, 1132 (2006) 297-303 |
[9] | "Sequential injection affinity chromatography utilizing an albumin immobilized monolithic column to study drug-protein interactions" Constantinos K. Zacharis, Eftichios A. Kalaitzantonakis, Ales Podgornik, Georgios A. Theodoridis* J. Chromatogr. A, 1144 (2007) 126-134 |
[10] | "A new method for the HPLC determination of gamma-hydroxybutyric acid (GHB) following derivatization with a coumarin analogue and fluorescence detection. Application in the analysis of biological fluids" Constantinos K. Zacharis, Nikolaos Raikos, Nikolaos Giouvalakis, Helen Tsoukali-Papadopoulou, Georgios A. Theodoridis* Talanta, 75 (2008) 356-361 |
[11] | "Extraction of acyclovir from pharmaceutical creams prior to HPLC assay analysis. Optimization and validation of pre-treatment protocols." Paraskevas D. Tzanavaras and Constantinos K. Zacharis* Central Eur. J. Chem., 6 (2008) 140-144 (Invited article) |
[12] | "Novel automated assay for the quality control of mexiletine hydrochloride formulations using sequential injection and on-line dilution" Paraskevas D. Tzanavaras*, Constantinos K. Zacharis, Pantelis Rigas J. Pharm. Biomed. Anal., 48 (2008) 1254-1260 |
[13] | "Amperometric determination of cyanides at the low ppb level by automated preconcentration based on gas diffusion coupled to sequential injection analysis" Constantinos K. Zacharis*, Paraskevas D. Tzanavaras, Anastasios N. Voulgaropoulos*, Bo Karlberg Talanta, 77 (2009) 1620-1626 |
[14] | "Separation and determination of nimesulide related substances for quality control purposes by micellar electrokinetic chromatography" Constantinos K. Zacharis, Paraskevas D. Tzanavaras*, Maria Notou, Anastasia Zotou, Demetrius G. Themelis J. Pharm. Biomed. Anal., 49 (2009) 201-206 |
[15] | "Automated sample preparation coupled to sequential injection chromatography: on-line filtration and dilution protocols prior to separation" Constantinos K. Zacharis, Aspasia Verdoukas, Paraskevas D. Tzanavaras*, Demetrius G. Themelis J. Pharm. Biomed. Anal., 49 (2009) 726-732. |
[16] | "Validated assay for the determination of mitoxantrone in pharmaceuticals using capillary zone electrophoresis" Fotini S. Kika, Constantinos K. Zacharis, Georgios A. Theodoridis, Anastasios N. Voulgaropoulos* Anal. Lett. 42 (2009) 842-855. |
[17] | "Ethyl-propiolate as a novel and promising analytical reagent for the derivatization of thiols: study of the reaction under flow conditions" Constantinos K. Zacharis*, Paraskevas D. Tzanavaras, Demetrius G. Themelis J. Pharm. Biomed. Anal. 50 (2009) 384-391 |
[18] | "High throughput automated determination of glutathione based on the formation of a UV-absorbing thioacrylate derivative" Constantinos K. Zacharis, Paraskevas D. Tzanavaras* Comb. Chem. High Throughput Screening 13 (2010) 461-468 (invited) |
[19] | "Rapid determination of methylxanthines in real samples by high performance liquid chromatography using the new FastGradient® narrow-bore monolithic column" Paraskevas D. Tzanavaras*, Constantinos K. Zacharis, Demetrius G. Themelis Talanta 81 (2010) 1494-1501 |
[20] | "On-line derivatization of N-acetylcysteine using ethyl-propiolate as a novel advantageous reagent and sequential injection analysis" Paraskevas D. Tzanavaras*, Constantinos K. Zacharis, Demetrius G. Themelis Anal. Lett. 43 (2010) 1889-1901 |
[21] | "Derivatization of thiols under flow conditions using two commercially available propiolate esters" Paraskevas D. Tzanavaras*, Alexandros Tsiomlektsis, Constantinos K. Zacharis J. Pharm. Biomed. Anal. 53 (2010) 790-794 |
[22] | "Solvent-based de-emulsification dispersive liquid-liquid microextraction combined with gas chromatography-mass spectrometry for determination of trace organochlorine pesticides in environmental water samples" Constantinos K. Zacharis*, Paraskevas D. Tzanavaras, Konstantinos Roubos, Kico Dhima J. Chromatogr. A 1217 (2010) 5896-5900 |
[23] | "HPLC separation of nimesulide and five impurities using a narrow-bore monolithic column: application to photo-degradation studies" Constantinos K. Zacharis, Paraskevas D. Tzanavaras* Chromatographia, 73 (2011) 347-352 |
[24] | "Development and validation of a rapid HPLC method for the determination of five banned fat-soluble colorants in spices using a narrow-bore monolithic column" Constantinos K. Zacharis*, Fotini S. Kika, Paraskevas D. Tzanavaras, Pantelis G. Rigas, Efstratios R. Kyranas Talanta, 84 (2011) 480-486 |
[25] | "Ethyl propiolate as a post-column derivatization reagent for thiols: development of a green liquid chromatographic method for the determination of glutathione in vegetables" Constantinos K. Zacharis, Paraskevas D. Tzanavaras*, Anastasia Zotou Anal. Chim. Acta, 690 (2011) 122-128 |
[26] | "NBD-Cl as a post-column reagent for primary and secondary amines after separation by ion-exchange chromatography" Constantinos K. Zacharis, Paraskevas D. Tzanavaras, Panagiotis N. Mouroutis, Pantelis Rigas* Anal. Lett. 44 (2011) 1821-1834 |