Most cations are best measured with DGT passive samplers that incorporate Chelex resin in the binding layer, the standard DGT passive samplers for cations. The exceptions are: Al, Hg and methyl mercury, and U. For…

In aqueous media uranium is present as the uranyl ion, UO22+, which can bind with hydroxide and carbonate anions to form neutral or negative species. It can be measured using the standard DGT passive samplers…

Methyl mercury and Hg2+ cannot be measured using the standard DGT passive samplers for cations with a Chelex binding layer. However, they both bind to the specialist binding layer 3-mercaptopropyl functionalised silica gel, enabling both…

In aqueous media aluminium is strongly hydrolysed and present predominantly at circumneutral pH as Al(OH)3. It can be measured using the standard DGT passive samplers for cations with a Chelex binding layer, but better performance…