Identification of complex volatile organic compounds in municipal landfill leachate by head-space solid phase microextraction and GCXGC-QMS analysis

Abstract

ABSTRACT.A method for the identification of different classes of volatile organic compounds in the municipal landfill leachate using solid phase microextraction and comprehensive two dimensional gas chromatography coupled with mass spectrometry (SPME-GCxGC-qMS) is elaborated. The results showed that the proposed protocol is able to separate and identify in a single run different classes of volatile organic compounds responsible for the odor of leachate such as carbonyl compounds, aromatic compounds, terpenes, phenolic compounds and nitrogen and sulfur containing compounds. The use of solid phase microextraction not only eliminate the solvent from the samples processing step but also considerably reduces the time and the volume of the sample necessary for this step, being a viable green alternative for this type of analysis. The use of mass spectrometry gives the possibility to indentify many other compounds responsible for municipal landfill leachate odor, creating the premises for a better assessment of chemical composition of leachate. The developed protocol shows good performances in term of repeatability, linearity, limit of detection and limit of quantification being applicable for the real municipal landfill leachate analysis.

New Analytical Method for Determination of Phthalates in Wastewater by on Line LC-GC-MS Using the TOTAD Interface and Fraction Collector

“…Beldean-Galea et al (2013) developed a comprehensive two-dimensional gas chromatography coupled with quadrupole mass spectrometry (GC × GC-qMS) for the identification of organic pollutants in landfill leachates, including PAEs, with preliminary solvent extraction [37]. Later, the same author used SPME [39] and DLLME [40] for the extraction procedure. Reliable and sensitive analytical methods are necessary for the determination and quantification of PAEs in leachate samples.…”

Analysis of multiclass organic pollutant in municipal landfill leachate by dispersive liquid-liquid microextraction and comprehensive two-dimensional gas chromatography coupled with mass spectrometry

“…Nowadays, comprehensive two-dimensional gas chromatography, coupled with mass spectrometry, becomes an attractive technique for analyzing the complex mixture of organic contaminants in various gaseous, liquid or solid environmental samples, due to its high peak capacity which allows the separation of a huge number of compounds in one run (de Vos et al 2011;Beldean-Galea et al 2013;Prebihalo et al 2015;Beldean-Galea et al 2017;Muscalu andGórecki 2018, Ieda et al, 2019). Compared to the classical GC technique, which uses a single column for separation, GCxGC uses two columns with different polarities, coupled together through an interface called modulator whose role is to collect the compounds eluted from the first column, their concentration and re-injection in the second column for a new separation.…”