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Multiresidue analysis of aromatic organochlorines in soil by gas chromatography-mass spectrometry and QuEChERS extraction based on water/dichloromethane partitioning. Comparison with accelerated solvent extraction
Multiresidue analysis of aromatic organochlorines in soil by gas chromatography-mass spectrometry and QuEChERS extraction based on water/dichloromethane partitioning. Comparison with accelerated solvent extraction
- Source :
- Talanta, Talanta, Elsevier, 2012, 93, pp.336-344. ⟨10.1016/j.talanta.2012.02.048,⟩
- Publication Year :
- 2011
-
Abstract
- International audience; A novel multiresidue method was developed for the simultaneous analysis of 34 organochlorines, including chlorobenzenes, chlorophenols, chlorinated hydrocarbons and chlorinated olefins, in soil by GC-MS, using a QuEChERS-based extraction. The conventional QuEChERS method was optimised and, for the first time, the use of a non miscible-water solvent was required. The method was compared to ASE extraction, versatile technique widely used for the soils' extraction and QuEChERS-based method was shown to be the most efficient in terms of recoveries, simplicity and rapidity. For ASE, recoveries between 42% and 85% were obtained for the majority of the compounds. However, due to the high pressure, all volatile compounds were lost. In opposite, QuEChERS extraction allowed detection and quantification of all the compounds with recoveries between 60% and 100%. Moreover, no additional clean up by dispersive SPE on PSA was necessary, which allowed reducing the cost of the analysis. Performance of the method was assessed. The method was linear over the range of concentration of 10-5000 μg kg−1. Precision, expressed as intra-day precision and inter-day variation was verified at three concentrations. Limits of detection were from 2 to 50 μg kg−1 and limits of quantification from 7 to 170 μg kg−1 for the majority of the compounds (chlorobenzenes and chlorinated hydrocarbons and olefins), except for chlorophenols. The method was further applied to different soils coming from a contaminated industrial site, where a new environmental remediation process, using phytoremediation, was tested. The results showed that the method could be applied to any kind of soils (mineral or organic) and was appropriate to very volatile compounds which were not available with conventional technique.
- Subjects :
- QuEChERS
Time Factors
Environmental remediation
Extraction
010501 environmental sciences
Chemical Fractionation
Quechers
01 natural sciences
ASE
Gas Chromatography-Mass Spectrometry
Analytical Chemistry
chemistry.chemical_compound
Soil
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
Organochlorines
Hydrocarbons, Chlorinated
0105 earth and related environmental sciences
Dichloromethane
Detection limit
Methylene Chloride
Chromatography
Chemistry
010401 analytical chemistry
Extraction (chemistry)
Analytic Sample Preparation Methods
Reproducibility of Results
Water
0104 chemical sciences
Clean-up
Solvent
Environmental chemistry
Solvents
Gas chromatography–mass spectrometry
GC-MS
Safety
Subjects
Details
- ISSN :
- 18733573 and 00399140
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Talanta
- Accession number :
- edsair.doi.dedup.....b2fda5f23c8a2f36f5a25b77e3de832b
- Full Text :
- https://doi.org/10.1016/j.talanta.2012.02.048,⟩