Natural deep eutectic solvents (NADES) in sample preparation of phosphate rock and mineral supplement for elementary determination by plasma-based techniques

Author(s)

Ana P. R. Santana ^[1] ; Daniel F. Andrade ^[2] ; Taciana G. S. Guimarães ^[3] ; Clarice D. B. Amaral ^[4] ; Andrea Oliveira ^[5] ; Ana R. A. Nogueira ^[6] ; Mario H. Gonzalez ^[7]

Affiliation

^[1] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Contaminantes Emergentes e Radioativos. Departamento de Química e Ciências Ambientais - Brasil

^[2] Universidade Federal de São Carlos. Departamento de Química - Brasil

^[3] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Contaminantes Emergentes e Radioativos. Departamento de Química e Ciências Ambientais - Brasil

^[4] Universidade Federal do Paraná. Departamento de Química - Brasil

^[5] Universidade Federal do Paraná. Departamento de Química - Brasil

^[6] Embrapa Pecuária Sudeste - Brasil

^[7] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Contaminantes Emergentes e Radioativos. Departamento de Química e Ciências Ambientais - Brasil

• Document type: Journal article
• Source: Química Nova; v. 44, n. 6, p. 689-695, 2021-08-11.

Abstract

Natural deep eutectic solvents (NADES) based on xylitol, citric acid, and malic acid were synthesized and used in ultrasound-assisted extraction (UAE) and heating-bath extraction of phosphate rock and mineral supplement samples. Arsenic, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, P and Zn were determined by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrometry (ICP OES). The results showed the NADES as promising solvents for extraction of inorganic matrices compared to reference values and concentrations obtained using microwave-assisted acid digestion (MW-AD). Significant differences were observed for some elements, suggesting different chemical interactions between the synthesized NADES and each monitored element. For analytes extraction of phosphate rock, UAE presented the best results for As, Cr and P. Zinc was extracted with UAE and heating bath. Concerning mineral supplement, no significant differences were observed for Ca (UAE), Cd (UAE and heating bath), K (UAE and heating bath), Mn (UAE and heating bath), Na (UAE and heating bath), and P (UAE and heating bath). The NADES is a greener and a potentially alternative for the sample preparation compared to the official methods of analysis, can being used as selective extractor solvent in conventional sample preparation methods. (AU)

• 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: 15/14488-0 - Analytical method development for quality determination of fertilizers and tanning waste
• Grantee: Ana Rita de Araujo Nogueira
• Support Opportunities: Regular Research 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
• FAPESP's process: 16/17304-0 - Proposition of methods for direct analysis of electronic waste samples: determination of precious, strategic and toxic elements in printed circuits boards and LCD screens
• Grantee: Daniel Fernandes de Andrade
• Support Opportunities: Scholarships in Brazil - Doctorate