Q. What is the basic principle of passive water sampling?
A. Removal of analyte to a binding layer establishes a concentration gradient within the passive sampler. From the amount bound measured in the laboratory Fick’s law [...]
A. Removal of analyte to a binding layer establishes a concentration gradient within the passive sampler. From the amount bound measured in the laboratory Fick’s law [...]
A. From a physical chemistry perspective DGT is a dynamic rather than an equilibrium technique because it continuously removes analyte from the medium. In this respect [...]
A. It stands for Diffusive Gradients in Thin-Films, which describes the mechanism of DGT where a controlled diffusion gradient is established in a layer of gel. [...]
A. A device that can be submerged in situ in a water body where it accumulates the analyte automatically by it diffusing to a binding site. [...]
A. The terminology originated for sampling analytes in air. In an active sampling device air is pumped to the analyte removal site, whereas for passive sampling [...]