G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 31/22 (2006.01) C02F 1/62 (2006.01) G01N 33/18 (2006.01)
Patent
CA 2078648
TEST KIT AND METHOD FOR THE DETERMINATION OF METAL ION CONCENTRATION IN SOLUTION ABSTRACT A test kit, composition and method are provided for the colorimetric analysis of the concentration of a metal ion, selected from the group consisting of Group VIB elements, Group VIIB elements, Group IB elements, Group IIB elements, Ni, Pd, and Pt, in an aqueous solution. The composition comprises dithizone, a water-soluble base in an amount sufficient to solubilize the dithizone in an aqueous test solution, and an iron-solubilizing compound. Using a powder composition of the invention, the method of the invention consists of dissolving the base in water to form a first working solution; contacting the first working solution with the remaining reagents to form a second working solution; contacting the test solution with the second working solution; and colorimetrically determining the concentration of the metal ion in the solution.The invention can consist of a test kit containing the above composition, and inaddition a multilayered analytical element (FIG. 2) on which the composition reagents are distributed.
Hoffmann Andrew F.
Yeaw David C.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
Hoffmann Andrew F.
Yeaw David C.
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