Lead detection method and kit

Details Lead detection method and kit Lead detection method and kit

G - Physics

01

N

150/26, 150/7

G01N 33/84 (2006.01)

Patent

CA 1256782

ABSTRACT OF THE DISCLOSURE A method and test kit are disclosed for quantitatively testing for the presence of lead in aqueous solution. The method comprises adjusting the pH of the aqueous solution to a value of from about 7.5 to 13, adding a predetermined amount of an aqueous test solution containing a soluble sulfide and a water-soluble glycol, and comparing the resultant colour of the solution with a standardized calibrated colour chart, so as to obtain a quantitative indication of the concentration of lead, if any, in the aqueous solution. The test kit for performing the method comprises a supply of aqueous alkali for adjusting the pH of the aqueous solution to be tested to the range of 7.5 to 13, a predetermined amount of a test solution containing a water-soluble sulfide and a water- soluble glycol in aqueous solution, a lead-free reaction vessel for mixing the aqueous solution with the alkali and test solution, and a standardized calibrated colour chart for comparison with the colour of the aqueous solution after addition of alkali and test solution.

577032

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