Analysis of Volatile Methylsiloxanes in Water using a Small-scale Liquid-liquid Extraction Method followed by Gas Chromatography-mass Spectrometry (LLE-GC-MS)

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Fábio Bernardo (Author) FEUP; Nuno Ratola (Author) FEUP; Arminda Alves (Author) FEUP; Vera Homem (Author) FEUP

Journal

Title: U.Porto Journal of Engineering

Pages: 2-12

Publisher: Universidade do Porto. Faculdade de Engenharia

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00W-Y4F

DOI: 10.24840/2183-6493_008.004_0002

Abstract (EN): Volatile methylsiloxanes (VMS) are ubiquitous anthropogenic pollutants that have been under scrutiny for their potential toxicity and environmental persistence. The aim of this work was to develop and validate a fast and reliable methodology to determine seven VMSs (D3, D4, D5, D6, L3, L4 and L5) in water matrices, based on a small-scale liquid-liquid extraction (LLE) assisted by ultrasounds and using a low volume of organic solvents. VMSs were quantified by gas chromatography-mass spectrometry (GC-MS). This methodology was successfully validated, showing low detection limits and a good precision (most of the relative standard deviations values below 15%) and accuracy (53-108%). Wastewater samples were analyzed and D5 and D6 were the dominant compounds in influent streams, with similar concentrations to those found in literature (up to 7 µg L-1). Most effluent samples presented VMSs levels below the limits of detection, with only D5 reaching up to 0.05 µg L-1.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10