Nitrate is traditionally measured via sensitive yet cumbersome Copper-Cadmium reduction column and colorimetric measurement. Analysis by Nitrate Ion Selective Electrode (ISE) coupled with flow injection analysis can provide a rapid and automatable procedure. Unfortunately, Chloride ions interfere significantly if the ISE procedure is used. Precipitation of Chloride as insoluble Silver salt has been used to remove Chloride ions from solution enabling the use of this method for brackish water samples. This approach is very expensive. This work reports the investigation of using chemical reactant solutions from commercial test kits for aquaria, where the amount of heavy metal waste is eliminated. A method for sea water was developed using spectrometry in the visible region providing better precision than the test kit technique. The advantages of FIA with small sample sizes and rapid sample through put and possible automation is being investigated and preliminary results for the FIA method are reported.

Use of commercial test kit reagents for the determination of nitrate in sea water

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.