Abstract
An automated system for the continuous monitoring of ammonium ion in fish farming plant sea water is described. The sample is introduced into a carrier stream by an automated sample injector and merged with a reagent solution containing sodium salicylate and sodium nitroprusside. The sample stream is then mixed with a second reagent solution containing sodium hypochlorite and heated at 50°C. The absorbance of the resulting solution is monitored at 660 nm. The calibration graph was linear up to at least 3.0 mg 1 −1 NH + 4-N. The relative standard deviation for 20 injections of samples containing 1.0 mg 1 −1 NH + 4-N was 0.35%. The interference from Ca 2+ and Mg 2+ was masked with potassium sodium tartrate. The interference due to amino acids and proteins present in fish foods and wastes was eliminated by adjusting the pH to 6–7 when the sample merged with the first reagent solution.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
