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Published on: January 22, 2018
Analysis of nitroaromatic compounds in complex samples using solid-phase microextraction and isotope dilution
S Jönsson1, L Gustavsson, B van Bavel
1Man-Technology-Environment Research Centre, Department of Natural Sciences, Orebro University, 701 82, Orebro, Sweden. sofie.jonsson@nat.oru.se
Abstract:
A solid-phase microextraction (SPME) method using gas chromatography-electron-capture negative ionisation mass spectrometry (GC-ECNI-MS) and isotope dilution quantification for the analysis of nitroaromatic compounds in complex, water based samples has been optimised. For ionisation, ECNI was the most sensitive and selective method. SPME was compared to solid-phase extraction (SPE) and found to be more sensitive for these small volume samples. LODs were in the range 0.02-38ngL(-1) for SPME and 6-184ngL(-1) for SPE, respectively. The SPME method was applied on samples in the ngL(-1) level from artificial reed beds treated with sludge containing residues from explosives and pharmaceuticals.
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