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Green analytical chemistry: from sample preparation to trace element determinations by inductively coupled plasma mass spectrometry (ICP-MS)


Many chemical processes can lead to negative impacts in the environment. This has increasingly led to acceptance of the need for environmental responsibility, the use of clean techniques, and methods of sustainable development. Advances in chemical analysis procedures aim to minimize impacts by reducing the volume and toxicity of the reagents used and the wastes generated, and by reducing energy consumption wherever possible. The objectives of this research project are coherent with the need to develop environmentally friendly methodologies. The work concerns optimization of the amounts of reagents employed in microwave-assisted digestion (MW-AD) systems (with use of dilute acids and alternative extractant solutions, and alkaline digestion employing TMAH, with substitution of reagents harmful to health). Evaluation will also be made of different methods of extraction with solvents including water, included a microwave-assisted extraction (MAE), ultrasound-assisted extraction (UAE), and pressurized water extraction (PWE)) and ionic liquids (ILs). These techniques will be critically evaluated for use prior to subsequent analyses of potentially toxic trace elements, such as As, Cd, Pb, Hg, and Cr, in agricultural, environmental, food, and biological samples by inductively coupled plasma mass spectrometry (ICP-MS). Investigation will also be made of ways to minimize the main interferences inherent to this analytical technique. (AU)

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Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
OLIVEIRA, ALINE F.; GONZALEZ, MARIO HENRIQUE; NOGUEIRA, ANA RITA A.. Use of multiple lines for improving accuracy, minimizing systematic errors from spectral interferences, and reducing matrix effects in MIP OES measurements. Microchemical Journal, v. 143, p. 326-330, . (17/18531-3)
SANTANA, ANA PR; MORA-VARGAS, JORGE A.; GUIMARAES, TACIANA G. S.; AMARAL, CLARICE D. B.; OLIVEIRA, ANDREA; GONZALEZ, MARIO H.. Sustainable synthesis of natural deep eutectic solvents (NADES) by different methods. JOURNAL OF MOLECULAR LIQUIDS, v. 293, . (17/09520-8, 17/13230-5, 13/23886-4, 15/08873-9, 17/18531-3)
NASCIMENTO, PATRICIA A.; SCHULTZ, JULIANA; GONZALEZ, MARIO H.; OLIVEIRA, ANDREA. Simple GFAAS Method for Determination of Pb, As, and Cd in Cannabidiol Extracts Used for Therapeutic Purposes. Journal of the Brazilian Chemical Society, v. 31, n. 5, p. 894-903, . (13/23886-4, 17/09520-8, 17/13230-5, 17/18531-3, 15/08873-9)
CALDEIRAO, LUCAS; FERNANDES, JOSE O.; GONZALEZ, MARIO HENRIQUE; GODOY, HELENA TEIXEIRA; CUNHA, SARA C.. A novel dispersive liquid-liquid microextraction using a low density deep eutectic solvent-gas chromatography tandem mass spectrometry for the determination of polycyclic aromatic hydrocarbons in soft drinks. Journal of Chromatography A, v. 1635, . (17/18531-3, 19/22113-8, 17/05048-2, 18/25746-9)
ANA P. R. SANTANA; DANIEL F. ANDRADE; TACIANA G. S. GUIMARÃES; CLARICE D. B. AMARAL; ANDREA OLIVEIRA; ANA R. A. NOGUEIRA; MARIO H. GONZALEZ. Solventes eutéticos naturais profundos (NADES) no preparo de amostras de rocha fosfática e suplemento mineral para determinação elementar por técnicas de plasma. Química Nova, v. 44, n. 6, p. 689-695, . (15/14488-0, 16/17304-0, 19/22113-8, 17/18531-3)
SANTANA, ANA P. R.; ANDRADE, DANIEL F.; MORA-VARGAS, JORGE A.; AMARAL, CLARICE D. B.; OLIVEIRA, ANDREA; GONZALEZ, MARIO H.. Natural deep eutectic solvents for sample preparation prior to elemental analysis by plasma-based techniques. Talanta, v. 199, p. 361-369, . (17/18531-3, 13/23886-4, 17/13230-5)
FERREIRA, NATHALIA S.; OLIVEIRA, LUCIANO H. B.; AGRELLI, VITOR; DE OLIVEIRA, ALINE F.; NOGUEIRA, ANA R. A.; OLIVEIRA, ANDREA; GONZALEZ, MARIO H.. Bioaccumulation and acute toxicity of As(III) and As(V) in Nile tilapia (Oreochromis niloticus). Chemosphere, v. 217, p. 349-354, . (17/18531-3, 16/24868-8, 15/08873-9, 16/05079-2)
RIBEIRO MENEZES, IOHANNA M. N.; NASCIMENTO, PATRICIA DE A.; GONZALEZ, MARIO H.; OLIVEIRA, ANDREA. Simple and Robust GFAAS Methods for Determination of As, Cd, and Pb in Hemp Products Using Different Sample Preparation Strategies. FOOD ANALYTICAL METHODS, v. 14, n. 5, . (15/08873-9, 17/18531-3, 19/22113-8)
SANTANA, ANA P. R.; ANDRADE, DANIEL F.; GUIMARAES, TACIANA G. S.; AMARAL, CLARICE D. B.; OLIVEIRA, ANDREA; GONZALEZ, MARIO H.. Synthesis of natural deep eutectic solvents using a mixture design for extraction of animal and plant samples prior to ICP-MS analysis. Talanta, v. 216, . (16/17304-0, 17/18531-3, 15/08873-9)

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