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Cationic Metals

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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…

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Uranium

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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…

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Mercury

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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…

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Aluminium

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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…

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