Fully automated system for the continuous monitoring of ammonium ion in fish farming plant sea water by flow-injection analysis
✍ Scribed by Hideki Muraki; Keiro Higuchi; Masanori Sasaki; Takashi Korenaga; Kyoji Tôei
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 314 KB
- Volume
- 261
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
An automated system for the contmuous momtormg of ammonmm eon m fish farming plant sea water IS described The sample IS Introduced mto a carrier stream by an automated sample Injector and merged with a reagent solution contammg sochum sahcylate and sodium mtroprusslde The sample stream IS then muted with a second reagent solution contammg sodium hypochlorlte and heated at 50°C The absorbance of the resultmg solution IS momtored at 660 nm The cahbratlon graph was lmear up to at least 3 0 mg 1-l NH:-N The relative standard devlatlon for 20 mjectlons of samples contammg 1 0 mg 1-I NH:-N was 0 35% The interference from Ca*+ and Mg*+ was masked with potassmm sochum tartrate The Interference due to ammo aads and protems present m fish foods and wastes was ehrtunated by adlustmg the pH to 6-7 when the sample merged wth the tirst reagent solution