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A New Approach to Ammonium Analysis Using Ion-Selective Electrodes and Neural Network Software
Author            :Dr Chris C Rundle
Designation    :Geochronologist
Company        :Nico2000
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Synopsis
A new ammonium analyser is described which uses well proven ion-selective electrode technology coupled with a unique computer-based method of data acquisition and processing to measure directly the concentration of ammonium ions in dilute aqueous solutions. An artificial neural network software is used to interrogate an extensive calibration database and to compensate for any interference effects from potassium ions, which are inherent in any ISE measurement of ammonium. Replicate analysis of standard solutions indicate a precision and accuracy of better than 10% (S.D.) over most of the working range (0.1 to 100 ppm NH4) with up to 100ppm K.

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