UiO-66-NH2: a recyclable and efficient sorbent for dispersive solid-phase extraction of fluorinated aromatic carboxylic acids from aqueous matrices

The present study describes the trace analysis of 23 fluorinated aromatic carboxylic acids based on the dispersive solid-phase extraction (dSPE) technique using UiO-66-NH 2 MOF as efficient, recyclable sorbent, and GC–MS negative ionization mass spectrometry (NICI MS) as determination technique. All...

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Bibliographic Details
Published in:Analytical and bioanalytical chemistry 2023-07, Vol.415 (17), p.3435-3448
Main Authors: Kumar, Anuj, Sharma, Chhaya
Format: Article
Language:English
Subjects:
Analytical Chemistry
Artificial seawater
Biochemistry
Carboxylic acids
Characterization and Evaluation of Materials
Chemical analysis
Chemistry
Chemistry and Materials Science
Dispersion
Drinking water
Fluorination
Food Science
Ionization
Ions
Laboratory Medicine
Life span
Mass spectrometry
Mass spectroscopy
Monitoring/Environmental Analysis
Potassium carbonate
Research Paper
Retention time
Seawater
Solid phases
Sorbents
Triethylamine
Water analysis
Water sampling
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Summary:The present study describes the trace analysis of 23 fluorinated aromatic carboxylic acids based on the dispersive solid-phase extraction (dSPE) technique using UiO-66-NH 2 MOF as efficient, recyclable sorbent, and GC–MS negative ionization mass spectrometry (NICI MS) as determination technique. All 23 fluorobenzoic acids (FBAs) were enriched, separated, and eluted in a shorter retention time; the derivatization was done by pentafluorobenzyl bromide (1% in acetone), in which the use of inorganic base K 2 CO 3 was improved by triethylamine to increase the lifespan of the GC column. The performance of UiO-66-NH 2 was evaluated by dSPE in Milli-Q water, artificial seawater, and tap water samples, and the impact of various parameters on the extraction efficiency was investigated by GC-NICI MS. The method was found to be precise, reproducible, and applicable to the seawater samples. In the linearity range, the regression value was found to be >0.98; LOD and LOQ were found to be in the range of 0.33–1.17 ng/mL and 1.23–3.33 ng/mL, respectively; and the value of the extraction efficiency was found to range between 98.45 and 104.39% for Milli-Q water samples, 69.13–105.48% for salt-rich seawater samples, and 92.56–103.50% for tap water samples with a maximum RSD value of 6.87% that confirms the applicability of the method to different water matrices. Graphical abstract
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-023-04728-1