| 摘要 |
PCT No. PCT/GB94/01775 Sec. 371 Date Feb. 12, 1996 Sec. 102(e) Date Feb. 12, 1996 PCT Filed Aug. 12, 1994 PCT Pub. No. WO95/05591 PCT Pub. Date Feb. 23, 1995A 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.
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