Analyzer for monitoring salinity content in highly resistive fluids

摘要

An electrochemical polymerization salt content analyzer determines the salt composition in a direct, rapid and continuous manner. The salt content analyzer (100) includes three electrodes: a working electrode (202), a counter electrode (205), and a reference electrode (204). In operation, the current passing through the electrodes when a sweep voltage is applied is analyzed to determine the salt content of the analyte. When a voltage is applied, the electropolymerizable monomer forms a thin film on the working electrode (202). The working electrode (202) includes an access control mechanism (405) for exposing only a portion of the working length of the working electrode (202) to the external environment at any given time. The access control mechanism (405) is advanced between tests to expose unused portions of the working electrode and hide portions having a thin film of electropolymerized monomer. Thus, the test can be performed in a continuous manner.