Much of the water supply industry has implemented online monitoring and warning systems for chemical or biological contaminations. When a contamination is detected, further investigations are necessary to confirm or to cancel the initial alarm. The proficiency of a non-target screening approach with solid phase extraction and GCMS in full-scan mode was examined. A selection of pesticides and industry chemicals was used for proficiency testing in extracts of raw and drinking water from Lake Constance. All total ion chromatograms (TIC) of extracted water samples showed a significant chemical background that have an adverse effect on compound identification. The TIC was evaluated with a two-dimensional search algorithm considering mass spectra similarity and retention index for identification, which was used an additional identification criteria to increase the confidence in identification. At a spiking level of 0.50 μg/l, up to 70% of the pollutants were unambiguously assignable. The sample pre-treatment was kept as simple as possible to reduce analysing time. A solid-phase extraction with extraction disks at flow rates up to 100 ml/min without any precedent filtration step reduces the sample pre-treatment time for a 1 l-sample below one hour. The recovery rates for most of the examined pollutants were above 60%.
Skip Nav Destination
Article navigation
Research Article|
December 01 2010
Proficiency test of non-target screening with gas chromatography mass spectrometry to confirm a detected contamination of raw and drinking water Available to Purchase
Michael Petri;
1Zweckverband Bodensee-Wasserversorgung, Betriebs- und Forschungslabor, Süßenmühle 1, D-88662 Überlingen, Germany E-mail: [email protected]
E-mail: [email protected]
Search for other works by this author on:
Jia-Qian Jiang;
Jia-Qian Jiang
2School of the Built and Natural Environment, Glasgow Caledonian University, Cowcaddens Road, Glasgow G4 0BA, UK E-mail: [email protected]
Search for other works by this author on:
Matthias Maier
Matthias Maier
3Faculty of Engineering and Physical Science (C5), University of Surrey, Guildford, Surrey GU2 7XH, UK E-mail: [email protected]
Search for other works by this author on:
Water Supply (2010) 10 (5): 806–814.
Citation
Michael Petri, Jia-Qian Jiang, Matthias Maier; Proficiency test of non-target screening with gas chromatography mass spectrometry to confirm a detected contamination of raw and drinking water. Water Supply 1 December 2010; 10 (5): 806–814. doi: https://doi.org/10.2166/ws.2010.191
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00