Device for concentrating trace components in a liquid
AssigneeUniversity of Lancaster
InventorWilliam Davison
Life of this patent
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Abstract
A probe device for use in measuring trace quantities of a component in a liquid environment comprises: (i) a membrane which is permeable to the component; and (ii) a layer of a material capable of binding the component and arranged to receive material which has permeated through the membrane from a face thereof juxtaposed to the fluid environment. The membrane may, for example, be a polyacrylamide gel and the material an ion exchange resin. The device may be used, for example, for determining quantities of trace metals in an aqueous environment.
Claims25
A probe device for use in measuring quantities of a component in a liquid environment, the device comprising means providing a diffusion pathway, the pathway being or containing a liquid and having a length of at least 0.1 mm, a liquid impermeable barrier such that only one end of the diffusion pathway contacts the liquid environment, and a material in contact with the diffusion pathway and arranged to bind the component which has diffused along said pathway characterized in that said material is an immobile material provided as a layer.
Dependencies are inferred from the claim text.