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Testing product

  • US 4,090,926 A
  • Filed: 03/15/1976
  • Issued: 05/23/1978
  • Est. Priority Date: 09/11/1974
  • Status: Expired due to Term
First Claim
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1. A method of testing an organic sample for detection and measurement of trace quantities of at least one heavy metal comprising,providing a matrix essentially free from said heavy metal and containing a measured quantity of at least one displacing metal ion-containing reagent adapted to displace the test metal from its organic chemical bonding and characterized by not plating out with said heavy metal at the electrolytic deposition potential of said heavy metal;

  • mixing with said matrix a measured quantity of the organic sample to be tested;

    applying a cathodic electrolytic potential to said mixture to deposit said heavy metal on a test electrode,thereafter releasing said heavy metal from said electrode by sweeping said electrode with a progressively varying anodic potential,detecting and identifying said heavy metal by the release potential, andmeasuring the quantities of said heavy metal by the electrolytic current at said release potential.

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