个人简介

Ph.D., Southern Illinois University, 1979

研究领域

Analytical

Analytical, Bioanalytical, Biosensors, Nanotechnology, Electrochemistry/Mass Spectrometry Our focus is on the development of biosensors exploiting novel materials and nanotechnology for key bioanalytical applications. Our bioanalytical research is supported by new mass spectrometry methods at the interface with electrochemical and LC methods.

近期论文

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Boateng, A.; Irague, F.; Brajter-Toth, A. Low nM Detection Limits at Porous 13nm Thick Membrane-Coated Nanostructured Microdisk Electrodes Electroanal., 2013, 25 (2) 345-355 Boateng, A.; Brajter-Toth, A. Nanomolar detection of p-nitrophenol via in situ generation of p-aminophenol at nanostructured microelectrodes Analyst, 2012, 137 (19) 4531-4538 Boateng, A.; Cohent-Shohet, R.; Brajter-Toth, A. Permeable porous 1-3 nm thick overoxidized polypyrrole films on nanostructured carbon fiber microdisk electrodes Electrochimica Acta., 2011, 56 (22) 7651-7658 Steill, J.D.; Szczepanski, J.; Oomens, J.; Eyler, J.R.; Brajter-Toth, A. Structural characterization by infrared multiple photon dissociation spectroscopy of protonated gas-phase ions obtained by electrospray ionization of cysteine and dopamine Anal. Bioanal. Chem., 2011, 399 (7) 2463-2473 Looi, D.W.; Eyler, J.R.; Brajter-Toth, A. Electrochemistry-electrospray ionization FT ICR mass spectrometry (EC ESI MS) of guanine-tyrosine and guanine-glutathione crosslinks formed on-line Electrochim. Acta, 2011, 56 (6) 2633-2640 Boateng, A.; Cohen-Shohet, R.; Brajter-Toth, A. Electrode Kinetics and Sensitivity of Nanostructured Electrodes from Different Carbon Fiber Precursor Materials Electroanal., 2011, 22 (24) 2915-2923 Kathiwala, M.; Affum, A.O.; Brajter-Toth, HPLC-UV measurements of metabolites in the supernatant of endothelial cells exposed to oxidative stress Anal. Bioanal. Chem., 2010, 396 (5) 1763-1771 Kathiwala, M.; Abou El-Nour, K. M.; Cohen-Shohet, R.; Brajter-Toth, A. Rapid measurements of 2,8-dihydroxyadenine (2,8-DHA) with a nanostructured electrochemical sensor in 5-fold diluted supernatants of endothelial cells exposed to oxidative stress. Analyst, Feb 2010, 135 (2), 296-301 Mautjana, N.A.; Looi, D.W.; Eyler, J.R.; Brajter-Toth, A. Sensitivity of positive ion mode electrospray ionization mass spectrometry (ESI MS) in the analysis of purine bases in ESI MS and on-line electrochemistry ESI MS (EC/ESI MS) Electrochim. Acta, 2009, 55 (1), 52-58 Mautjana, N.A.; Estes, J.; Eyler, J.R.; Brajter-Toth, A. Antioxidant pathways and one-electron oxidation of dopamine and cysteine in electrospray and on-line electrochemistry electrospray ionization mass spectrometry Electroanal., 2008, 20 (18),1959-1967 O'Mullane, A.P.; Zhang, J.; Brajter-Toth, A.; Bond A.M. Higher harmonic large-amplitude Fourier transformed alternating current voltammetry: Analytical attributes derived from studies of the oxidation of ferrocenemethanol and uric acid at a glassy Anal. Chem., 2008, 80 (12) 4614-4626 Kathiwala, M.; Affum, A.O.; Perry, J.; Brajter-Toth A. Direct measurements of xanthine in 2000-fold diluted xanthinuric urine with a nanoporous carbon fiber sensor Analyst, 2008, 133 (6) 810-816 El-Nour, Kholoud Abou; Brajter-Toth, A. Development of adenosine sensor: effect of physiological buffers on activity and sensitivity in adenosine determinations by fast scan voltammetry. Analyst, Aug 2003, 128 (8), 1056-61 Brajter-Toth, A.; Bravo, R.; Liang, P.; Cook J. Development and characterization of nanostructured electrodes for bioanalytical applications Conference Information: 223rd National Meeting of the American Chemical Society, April 07-11, 2002 Orlando, FL, USA Abstracts of Papers American Chemical Society, 2002, 223 (1-2) ANYL 182 Bravo, Roberto; Stickle, Dawn M.; Brajter-Toth, Anna Determination of uric acid in urine by fast-scan voltammetry (FSV) using a highly activated carbon fiber electrode. Oxidative stress biomarkers and antioxidant protocols, 2002, 195-208 Brajter-Toth A.; Bravo R.; Liang P.; Cook J. Development and characterization of nanostructured electrodes for bioanalytical applications. Abstr. Papers Am. Chem. Soc., Apr 7 2002 (223), Part 1, Meeting Abstract: 182-ANYL, U92-U92 Zhang TY; Palii SP; Eyler JR; Brajter-Toth A. Enhancement of ionization efficiency by electrochemical reaction products in on-line electrochemistry/electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry Anal. Chem., Mar 2002, 74 (5), 1097-1103 Zhang TY; Brajter-Toth A. High sensitivity in particle beam mass spectrometry with a non-volatile electrolyte Anal. Chim. Acta, Aug 2001, 442 (1), 97-103 Zhang TY; Brajter-Toth A. On-line investigation of the generation of nonaqueous intermediate radical cations by electrochemistry/mass spectrometry Anal. Chem., Jun 2000, 72 (11), 2533-2540