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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Improving the Sensitivity of FESTA Methods for the Analysis of Fluorinated Mixtures

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Author(s):
Barbosa, Thais M. [1] ; Castanar, Laura [2] ; Moutzouri, Pinelopi [2] ; Nilsson, Mathias [2] ; Morris, Gareth A. [2] ; Rittner, Roberto [1] ; Tormena, Claudio F. [1]
Total Authors: 7
Affiliation:
[1] Univ Campinas UNICAMP, Chem Inst, POB 6154, BR-13083970 Campinas, SP - Brazil
[2] Univ Manchester, Sch Chem, Oxford Rd, Manchester M13 9PL, Lancs - England
Total Affiliations: 2
Document type: Journal article
Source: Analytical Chemistry; v. 92, n. 2, p. 2224-2228, JAN 21 2020.
Web of Science Citations: 0
Abstract

The analysis of complex mixtures is an important but often intractable problem. When species contain sparse fluorine atoms, NMR spectra of fluorine-containing spin systems can be efficiently extracted from an intact mixture using the recently proposed FESTA (Fluorine-Edited Selective TOCSY Acquisition) methodology. Here an alternative approach to the existing selective reverse INEPT FESTA (SRI-FESTA) experiment is described, based on the use of a modulated spin echo for the initial excitation. MODO-FESTA (modulated echo FESTA) is simpler and has a significant sensitivity advantage over SRI-FESTA. Comparisons are presented of the relative sensitivity and spectral purity of the two types of methods. (AU)

FAPESP's process: 14/12776-6 - Development and application of NMR techniques to analyse complex mixtures
Grantee:Thaís Mendonça Barbosa
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 15/08541-6 - Nuclear magnetic resonance spectroscopy: beyond molecular structure assignment
Grantee:Claudio Francisco Tormena
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 15/19229-3 - Multi-way diffusion NMR data analysis applied to chemical reaction monitoring
Grantee:Thaís Mendonça Barbosa
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 16/24109-0 - Conformational Analysis of Some Aliphatic Esters Bearing a Nitrogen Atom as a Substituent
Grantee:Roberto Rittner Neto
Support Opportunities: Regular Research Grants