(Re) thinking towards a sustainable analytical chemistry: Part I: Inorganic elemental sample treatment, and Part II: Alternative solvents and extraction techniques

Author(s)

Santana, Ana P. R. ; Nascimento, Patricia de Andrade ; Guimaraes, Taciana G. S. ; Menezes, Iohanna M. N. Ribeiro ; Andrade, Daniel F. ; Oliveira, Andrea ; Gonzalez, Mario H.

• Document type: Journal article
• Source: TRAC-TRENDS IN ANALYTICAL CHEMISTRY; v. 152, p. 34-pg., 2022-04-08.

Abstract

Currently, there is a huge demand for the development of analytical methods for chemical analysis. Sustainable methods have aroused the interest of researchers in the last years. This paper reviews important technologies for digestion and solid-liquid extraction approaches, with emphasis in emerging greener methods for the elemental analysis of different samples. Analytical technologies such as Microwave-assisted wet digestion (MAWD), Microwave-assisted extraction (MAE), Ultrasound-assisted extraction (UAE), Microwave-induced combustion (MIC), Alkaline treatment, and liquid-liquid extraction and other alternative approaches for inorganic elements are highlighted. Application, advantages and limitations of these methods using diluted acids, ultraviolet radiation, alkaline reagents, less toxic solvents [i.e. deep eutectic solvents (DES) and its subclasses, as well as alternative solvents], and combination of different technologies are discussed. We also briefly present the role of direct analysis using different spectroscopy techniques such as Laser-induced breakdown spectroscopy (LIBS), Laser ablation coupled to plasma-based techniques (LA-ICP-MS/ OES), Raman spectrometry, Near-infrared spectrometry (NIR), and X-ray fluorescence (XRF) which a minimum or no sample preparation. The chemometrics approaches applied for the development of the green analytical chemistry were also mentioned. (AU)

• FAPESP's process: 15/08873-9 - Assessment of arsenic's bioaccumulation and associated risks from fish consumption in Brazil
• Grantee: Mario Henrique Gonzalez
• Support Opportunities: Regular Research Grants
• FAPESP's process: 19/22113-8 - Natural Deep Eutectic Solvents: synthesis, characterization, and application for the determination of As, Cd, Cr, Hg, Se, and V in environmental samples using ICP-MS
• Grantee: Mario Henrique Gonzalez
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 17/18531-3 - Green analytical chemistry: from sample preparation to trace element determinations by inductively coupled plasma mass spectrometry (ICP-MS)
• Grantee: Mario Henrique Gonzalez
• Support Opportunities: Regular Research Grants