George L. Donati

George L. Donati

Contact Info

GeorgeDonati-128x150

Lecturer

B.S. 2000, University of the Guaxupé Educational Foundation (Brazil)
M.Sc. 2006, Federal University of São Carlos (Brazil, Prof. Joaquim A. Nóbrega)
Ph.D. 2010, Wake Forest University (Prof. Bradley T. Jones)
Postdoctoral Research Associate 2010-2012, Federal University of São Carlos (Brazil, Prof. Joaquim A. Nóbrega)
Teacher-Scholar Postdoctoral Fellow 2012-2013, Wake Forest University

 

Office: Salem 116A
Phone: (336) 758-4815
Email: donatigl@wfu.edu

Home Page: https://sites.google.com/site/georgedonati7

Research Group

Katherine Albanese Amanda Althoff

 

 

 

Research Description

Analytical Chemistry Instrumentation for Trace Element Analysis

Trace elements play a critical role in many processes and the demand for the determination of their chemical forms and concentrations in samples of economic, technological and environmental importance have steadily increased in the last few decades. The significance of such analytes can be observed by the different pieces of legislation establishing their maximum levels in several samples, and their role in the development of new drugs, materials, and processes.

In the Donati lab we develop analytical methods to determine trace levels of metals and nonmetals in many different samples; from biodiesel fuel, to superficial waters, plant material, and animal tissue. Our research is focused on designing, constructing and evaluating the analytical performance of low-cost, portable instrumentation for trace element analysis. We also develop new strategies to improve the performance of commercial instruments such as inductively coupled plasma with optical emission (ICP OES) or mass spectrometry (ICP-MS) detections.

Research Projects

Publications

Amais, R. S.; Nóbrega, J. A. and Donati, G. L., The interference standard method: evidence of principle, potentialities and limitations, J. Anal. At. Spectrom. 29 (7), (2014) 1258-1264.

Dancsak, S. E.; Silva, S. G.; Nóbrega, J. A.; Jones, B. T. and Donati, G. L., Direct determination of sodium, potassium, chromium and vanadium in biodiesel fuel by tungsten coil atomic emission spectrometry, Anal. Chim. Acta 806 (2014) 85-90.

Amais, R. S.; Donati, G. L. and Nóbrega, J. A., Sulfur determination in fuels by ICP-OES and ICP-MS to meet increasingly stricter legislation requirements, Spectroscopy 29(3) (2014) 24-33.

Virgilio, A.; Nóbrega, J. A.; Jones, B. T. and Donati, G. L., Chemical modification in atomic emission: Determination of V in lubricant oils by tungsten coil atomic emission spectrometry, Microchem. J. 115 (2014) 58-62.

Bechlin, M. A.; Fortunato, F. M.; Ferreira, E. C.; Gomes Neto, J. A.; Nóbrega, J. A.; Donati, G. L. and Jones, B. T., Bismuth as a general internal standard for lead in atomic absorption spectrometry, Anal. Chim. Acta 831 (2014) 24-30.

Silva, S. G.; Nóbrega, J. A.; Jones, B. T. and Donati, G. L., Magnesium nitrate as a chemical modifier to improve sensitivity in manganese determination in plant materials by tungsten coil atomic emission spectrometry, J. Anal. At. Spectrom. 29 (8) (2014) 1499-1503.

Silva, S. G.; Nóbrega, J. A.; Jones, B. T. and Donati, G. L., Evaluation of Mg and Mn determination in water and plants using continuum source tungsten coil atomic fluorescence spectrometry, Microchem. J. 117 (2014) 250-254

Virgilio, A.; Healy, C. K.; Nóbrega, J. A.; Jones, B. T. and Donati, G. L., Evaluation of atomizer conditioning and pyrolysis and atomization temperature control to improve procedures based on tungsten coil atomic emission spectrometry, Microchem. J. 110 (2013) 758-763.

Amaral, C. D. B.; Dionísio, A. G. G.; Santos, M. C.; Donati, G. L.; Nóbrega, J. A. and Nogueira, A. R. A., Evaluation of sample preparation procedures and krypton as interference standard probe for arsenic speciation by HPLC-ICP-QMS, J. Anal. At. Spectrom. 28 (8) (2013) 1303-1310.

Silva, S. G.; Donati, G. L.; Santos, L. N.; Jones, B. T. and Nóbrega, J. A., Cobalt as chemical modifier to improve chromium sensitivity and minimize matrix effects in tungsten coil atomic emission spectrometry, Anal. Chim. Acta 780 (2013) 7-12.

Donati, G. L.; Amais, R. S.; Schiavo, D. and Nóbrega, J. A., Determination of Cr, Pb, Ni and V in gasoline and ethanol fuel by microwave plasma optical emission spectrometry, J. Anal. At. Spectrom. 28(5) (2013) 755-759.

Rocha, D. L.; Batista, A. D.; Rocha, F. R. P.; Donati, G. L. and Nóbrega, J. A., Greening sample preparation in inorganic analysis, Trend Anal. Chem. 45 (2013) 79-92.

Donati, G. L.; Amais, R. S. and Nóbrega, J. A., Tungsten coil electrothermal matrix decomposition and sample vaporization to determine P and Si in biodiesel by inductively coupled plasma mass spectrometry, J. Anal. At. Spectrom. 28(2) (2013) 280-287.

Amais, R. S.; Donati, G. L.; Schiavo, D. and Nóbrega, J. A., A simple dilute-and-shoot procedure for Si determination in diesel and biodiesel by microwave-induced plasma optical emission spectrometry, Microchem. J. 106 (2013) 318-322.

Santos, L. N.; Donati, G. L.; Calloway, Jr., C. P.; Jones, B. T. and Nóbrega, J. A., Enzymatic proteolysis and in situ digestion as strategies to determine Cs and Sr in fish by tungsten coil atomic emission spectrometry, J. Anal. At. Spectrom. 27(12), (2012) 2082-2087.

Santos, L. N.; Gonzalez, M. H.; Moura, M. F.; Donati, G. L. and Nóbrega, J. A., In situ digestion for the determination of Ca in beverages by tungsten coil atomic emission spectrometry, Talanta 97(8) (2012) 285-290.

Donati, G. L.; Amais, R. S. and Nóbrega, J. A., Interference standard and oxide ion detection as strategies to determine phosphorus and sulfur in fuel samples by inductively coupled plasma quadrupole mass spectrometry, J. Anal. At. Spectrom. 27(8) (2012) 1274-1279.

Amais, R. S.; Donati, G. L. and Nóbrega, J. A., Interference standard applied to sulfur determination in biodiesel microemulsions by ICP-QMS, J. Braz. Chem. Soc. 23(5) (2012) 797-803.

Donati, G. L.; Amais, R. S. and Nóbrega, J. A., Strategies to improve accuracy and sensitivity in phosphorus determinations by inductively coupled plasma quadrupole mass spectrometry, J. Braz. Chem. Soc. 23(4) (2012) 786-791.

Donati, G. L.; Amais, R. S. and Nóbrega, J. A., Improving accuracy in inductively couple plasma-quadrupole mass spectrometry: the interference standard method, Spectroscopy 27(4) (2012) 44-49.

Amais, R. S.; Donati, G. L. and Nóbrega, J. A., Application of the interference standard method for the determination of sulfur, manganese and iron by inductively coupled plasma mass spectrometry, Anal. Chim. Acta 706(2) (2011) 223-228.

Dionísio, A. G. G.; Jesus, A. M. D.; Amais, R. S.; Donati, G. L.; Miranda, K. A.; Guerra, M. B. B.; Nóbrega, J. A. and Pereira-Filho, E. R., Old and new flavors of flame (furnace) atomic absorption spectrometry. Int. J. Spectrosc. (2011) 1-30.

Donati, G. L.; Amais, R. S. and Nóbrega, J. A., Interference standard: a new approach to minimizing spectral interferences in inductively coupled plasma mass spectrometry, J. Anal. At. Spectrom. 26(9) (2011) 1827-1832.

Donati, G. L.; Rosini, F.; Nogueira, A. R. A. and Nóbrega, J. A., Focused-microwave-induced combustion: investigation of KClO3 thermal decomposition as O2 source, Anal. Methods 3(7) (2011) 1688-1691.

Gu, J.; Oliveira, S. R.; Donati, G. L.; Gomes Neto, J. A. and Jones, B. T., Rugged, portable tungsten coil atomic emission spectrometer, Anal. Chem. 83(7) (2011) 2526-2531.

Donati, G. L. and Jones, B. T., Development of a novel spectrometric-based temperature probe and the investigation of atomic cloud generation in a tungsten coil atomizer, J. Anal. At. Spectrom. 26(4) (2011) 838-844.

Gu, J.; Donati, G. L.; Young, C. G. and Jones, B. T., Continuum source tungsten coil atomic fluorescence spectrometry, Appl. Spectrosc. 65(4) (2011) 382-385.

Donati, G. L.; Wildman, R. B. and Jones, B. T., A new atomization cell for trace metal determinations by tungsten coil atomic spectrometry, Anal. Chim. Acta 688(1) (2011) 36-42.