Ion specific analytical element

Details Ion specific analytical element Ion specific analytical element

G - Physics

01

N

150/8

G01N 33/18 (2006.01) G01N 33/52 (2006.01) G01N 33/84 (2006.01)

Patent

CA 1161346

ABSTRACT OF THE DISCLOSURE A method for the determination of an ion in an aqueous test sample and a test means and test device for use in such determinations are disclosed. More particularly, the contemplated method comprises contacting a test means or test device with the sam- ple in the presence of a detectable species, the test means comprising a layer of substantially non- polar material incorporated with an analyte-specific ionophore, and measuring the amount of said detect- able species which has migrated to at least a sur- face portion of said test means, the amount of said detectable species which has migrated being indica- tive of the concentration of the specific ionic analyte in the sample. The detectable species can be added directly to the aqueous test sample or in- corporated into the test means as a second layer in laminar relationship to the ionophore layer.

377865

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