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Electrochemical detection of silica species

  • US 8,702,957 B2
  • Filed: 06/29/2007
  • Issued: 04/22/2014
  • Est. Priority Date: 06/29/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • applying a voltage to a buffering solution, which comprises a molybdenum-chloranilate complex and is free of inorganic silica species;

    measuring a first current associated with the molybdenum-chloranilate complex in absence of the inorganic silica species;

    adding the inorganic silica species into the buffering solution;

    measuring a second current associated with the molybdenum-chloranilate complex in the presence of the added inorganic silica species; and

    obtaining a difference between the first current and the second current to identify a concentration of the added inorganic silica species in the buffering solution,wherein measuring the first and second currents comprises using a working electrode comprising bismuth.

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