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Update on the NORMAN Collaborative Trial on Passive Sampling and Non-target Screening (NTS)

Sampling was conducted from the 27th to the 31st May 2019 at a drinking water treatment plant in the Czech Republic. Passive sampler deployments were undertaken for two and four days in the river at the water intake point and in the drinking water after treatment.

The samples to be provided to the participating laboratories were prepared in the laboratory at RECETOX/Masaryk University in the last two weeks of June and were dispatched from Norway on the 3rd July 2019.

Extended acknowledgements to the drinking water treatment plant, Branislav Vrana (Masaryk University, CZ), Helena Švecová and Roman Grabic (University of South Bohemia in České Budějovice, CZ) and Biotage for their contribution toward the Horizon SPE disks.

This work is part of the NORMAN Joint Programme of Activities 2019 - ILS on Impact of deconvolution and library search algorithms for non-target analysis based on a passive sampling approach for non-target screening of polar substances (Leader: NIVA, Norway) (Activity organised as part of the CWG-NTS and the CWG-Passive Sampling). You can find more detailed information about this study here.

Through this collaborative trial we will attempt to answer the following scientific questions:

1. Which chemicals are (i) present and removed from source water (river) and (ii) present in drinking water and generated during drinking water treatment?
2. What is the most effective extended suspect screening workflow for the detection of these chemicals in the passive sampling extracts?
3. Can passive sampling combined with NTS be an effective strategy for the water monitoring?
a. Can the use of longer or multiple passive sampler exposure times increase the number of identified chemicals and improve the level of confidence in IDs?
b. Can passive sampling increase or decrease the matrix effects?