Preprint Article Version 1 This version is not peer-reviewed

A low-cost approach using diatomaceous earth biosorbent as alternative SPME coating for the determination of PAHs in water samples by GC-MS

Version 1 : Received: 8 October 2018 / Approved: 8 October 2018 / Online: 8 October 2018 (15:54:40 CEST)

A peer-reviewed article of this Preprint also exists.

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. 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.

Journal reference: Separations 2018, 5, 55
DOI: 10.3390/separations5040055

Abstract

In this study, the use of recycled diatomaceous earth as the extraction phase in a the 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 ºC 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 for use as the extraction phase in SPME.

Subject Areas

recycled diatomaceous earth; solid phase microextraction; polycyclic aromatic hydrocarbons; gas chromatography-mass spectrometry

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