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Tracing flow of fluids

  • US 4,264,329 A
  • Filed: 04/27/1979
  • Issued: 04/28/1981
  • Est. Priority Date: 04/27/1979
  • Status: Expired due to Term
First Claim
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1. A method of detecting the presence of a tracer in a material comprising contacting the material with metal chelate tracer formed by the reaction of an aryl substituted ethylenediaminetetraacetic acid and a metal ion selected from the group consisting of lead, cadmium and zinc, collecting a sample of said material containing said tracer, passing said sample through a liquid chromatographic column to obtain said tracer, reacting said separated tracer with a fluorogenic reagent and detecting the reaction product of said separated tracer and said fluorogenic reagent by fluorescent or ultraviolet spectroscopy.

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