Use of passive stir bar sorptive extraction as a simple integrative sampling technique of pesticides in freshwaters: Determination of sampling rates and lag-phases.

Highlights: [•] Stir bar sorptive extraction is used as a passive sampler in water (passive SBSE). [•] Passive SBSE is calibrated for 18 pesticides in a flow-through system. [•] Accurate sampling rates and short lag-phases are determined for all pesticides. [•] We observe the impact of flow velocity on the uptake of 5 hydrophobic pesticides. [•] Fenitrothion-d6 is shown as a promising performance reference compound candidate [Copyright &y& Elsevier]