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Passive Sampling of Phosphate with DGT: A Comprehensive Approach for Aquatic Metal Ion Detection

Explore the innovative Diffusive Gradient in Thin Films (DGT) method for passive sampling of labile metal ions in aquatic environments. This method utilizes diffusion theory for calculating time-averaged concentrations, with a focus on heavy metals and reactive trace metals. Learn about Chelex as an effective adsorbent for metals, previous studies by NIVA on phosphate, arsenate, and selenate, and DGT theory components.

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Passive Sampling of Phosphate with DGT: A Comprehensive Approach for Aquatic Metal Ion Detection

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  1. Passive sampling of phosphate with DGT

  2. Diffusive Gradient in thin films (DGT) • Developed for passive sampling of labile metal ions in aquatic environments • Diffusion theory for calculations of time-averaged concentrations. • Main focus: heavy metals Cu, Zn, Cd, Pb, Ni and Cr plus reactive trace metals Mn and Fe. • Chelex, adsorbent for metals • Few studies on collection of anionic compounds. • 2004 studies were preformed by NIVA on DGT as passive sampler for phosphate, arsenate and selnate.

  3. DGT theory Window Cap Piston

  4. DGT theory Fe(OH)3

  5. DGT theory Fick’s first law: Time-averaged concentration: Time integrateduptake:

  6. DGT uptake of AMP

  7. DGT uptake of AMP

  8. DGT uptake of AMP

  9. DGT uptake of AMP

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