Thin film microextraction (TFME), a potential strategy combined to laser-induced breakdown spectroscopy (LIBS) detection

• Grant number: 23/00947-0
• Support Opportunities: Scholarships abroad - Research
• Start date: May 11, 2023
• End date: August 04, 2023
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Ivanise Gaubeur
• Grantee: Ivanise Gaubeur
• Host Investigator: Montserrat Hidalgo Nuñez
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Institution abroad: Universidad de Alicante (UA), Spain

Abstract

Separation and preconcentration procedures are often required for the elimination of interferents, increased sensitivity and improvement detection limits. Such procedures include liquid phase extraction, solid phase extraction, co-precipitation and precipitation. The conventional solid-phase extraction (batch) has many applications in the determination of analytes of various types, in low concentrations, and in complex matrices such as environmental, food and biological. The main disadvantages of this type of extraction are the high reagent consumption, the sample and the low analytical frequency. In order to reduce reagents and samples consumption, methods combined to Green Analytical Chemistry (GAC) emerged and among others highlighted solid phase and liquid phase microextraction. Thin Film Microextraction (TFME) is based on the use of a solid support covered with a thin layer of adsorbent material, attached to a rod, introduced into the sample solution. Extracted analytes can be determined after desorption (elution) or directly on the thin film combining TFME and Laser-induced breakdown spectroscopy (LIBS), thus eliminating desorption step. The aim of this project is exploits it´s TFME potential combined to LIBS to elementary analysis. (AU)