Aquatic Sampling of Pesticide

Researchers from the Helmholtz Centre for Environmental Research (Leipzig, Germany) used the Chemcatcher aquatic passive sampling device to collect samples from a 1-day pulse contamination with the pesticide thiacloprid. The device consists of a sampler body and an Empore disk (3M, St. Paul, Minnesota) as the receiving phase. They examined a configuration without a diffusion-limiting membrane, which led to biofouling of the disk receiving phase. Use of a diffusion-limiting polyethersulfone membrane prevented the biofouling.