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(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

FASES ESTACIONÁRIAS DE LÍQUIDOS IÔNICOS EM CROMATOGRAFIA GASOSA: FUNDAMENTOS, AVANÇOS RECENTES E PERSPECTIVAS

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Autor(es):
Leandro W. Hantao [1] ; Bruna R. Toledo [2] ; Fabio Augusto [3]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Centro Nacional de Pesquisa em Energia e Materiais. Laboratório Nacional de Nanotecnologia - Brasil
[2] Universidade Estadual de Campinas. Instituto de Química - Brasil
[3] Universidade Estadual de Campinas. Instituto de Química - Brasil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Química Nova; v. 39, n. 1, p. 81-93, 2016-01-00.
Resumo

Since their original discovery in 1914, ionic liquids (IL) have been widely examined and explored in chemistry due to their unique physical and chemical properties. Ionic liquids are collectively known as organic salts and have melting points of 100 °C or under. The molten salts most employed in analytical chemistry, including gas chromatography (GC), consist of an organic cation paired with an organic or inorganic anion. This class of materials exhibits negligible vapor pressure and may have their properties (e.g.thermal stability and selectivity) structurally tuned by imparting different moieties to the cation/anion. Currently, there are an estimated 1018possible combinations of IL. In this context, the prospection of highly selective IL-based stationary phases for gas-liquid chromatography has enabled high peak capacity and efficient separations of many critical pairs in complex samples. In this review, we present and discuss fundamental characteristics of ionic liquids and introduce important solvation models for gas-liquid systems. In addition, recent advances and applications of IL in conventional and multidimensional gas chromatography are outlined. (AU)