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Open AccessFeature PaperArticle

A Low-Cost Approach Using Diatomaceous Earth Biosorbent as Alternative SPME Coating for the Determination of PAHs in Water Samples by GC-MS

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Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
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Departamento de Engenharia de Pesca e Ciências Biológicas, Universidade do Estado de Santa Catarina, Laguna, Santa Catarina 88790-000, Brazil
3
Departamento de Ciências Naturais e Sociais, Universidade Federal de Santa Catarina, Curitibanos 89520-000, SC, Brazil
*
Author to whom correspondence should be addressed.
Separations 2018, 5(4), 55; https://doi.org/10.3390/separations5040055
Received: 10 October 2018 / Revised: 11 November 2018 / Accepted: 12 November 2018 / Published: 20 November 2018
(This article belongs to the Special Issue Five Years of Separations: Feature Paper 2018)
In this study, the use of recycled diatomaceous earth as the extraction phase in solid phase microextraction (SPME) technique for the determination of polycyclic aromatic hydrocarbons (PAHs) in river water samples, with separation/detection performed by gas chromatography-mass spectrometry (GC-MS), is proposed. The optimized extraction conditions are extraction time 70 min at 80 °C with no addition of salt. The limits of quantification were close to 0.5 μg L−1 with RSD values lower than 25% (n = 3). The linear working range was 0.5 μg L−1 to 25 μg L−1 for all analytes. The method was applied to samples collected from the Itajaí River (Santa Catarina, Brazil) and the RSD values for repeatability and reproducibility were lower than 15% and 17%, respectively. The efficiency of the recycled diatomaceous earth fiber was compared with that of commercial fibers and good results were obtained, confirming that this is a promising option to use as the extraction phase in SPME. View Full-Text
Keywords: recycled diatomaceous earth; solid phase microextraction; polycyclic aromatic hydrocarbons; gas chromatography-mass spectrometry recycled diatomaceous earth; solid phase microextraction; polycyclic aromatic hydrocarbons; gas chromatography-mass spectrometry
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Reinert, N.P.; Vieira, C.M.S.; Da Silveira, C.B.; Budziak, D.; Carasek, E. A Low-Cost Approach Using Diatomaceous Earth Biosorbent as Alternative SPME Coating for the Determination of PAHs in Water Samples by GC-MS. Separations 2018, 5, 55.

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