The control of ammonia toxicity to Hyalella azteca by sodium, potassium, and pH / by Uwe Borgmann & Anne I. Borgmann. : En13-5/96-88E-PDF
"The toxicity of ammonia to Hyalella azteca at constant pH in artificial media is controlled by sodium and potassium, and not by calcium, magnesium, or anions. Small increases in the LC50 for total ammonia (from 0.15 to 0.5 mM) occur as sodium is increased from 0.1 to M1 mM(and above, but major increases in the LC50 (to over 10 m_M total ammonia) require the addition of potassium. Potassium is, however, more effective at reducing ammonia toxicity at high (1 mM) sodium than at low (0.1 mM)‘ sodium. Ammonia toxicity is independent of pH at low sodium and potassium concentrations, when ammonia toxicity appears to be due primarily to the ammonium ion. At high sodium and potassium, the toxicity of the ammonium ion is reduced to the point where un-ionized ammonia also contributes to toxicity, and the LC50 becomes pH dependent. A mathematical model was produced for predicting ammonia toxicity from sodium and potassium concentrations and pH"--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.870795&sl=1
| Ministère/Organisme | Canada. Environment Canada. Canada. Water Science and Technology Directorate. National Water Research Institute (Canada) |
|---|---|
| Titre | The control of ammonia toxicity to Hyalella azteca by sodium, potassium, and pH / by Uwe Borgmann & Anne I. Borgmann. |
| Titre de la série | NWRI contribution ; 96-88 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 13-15). |
| Information sur la publication | [Burlington, Ontario] : Environment Canada, Water Science and Technology Directorate = Environnement Canada, Direction générale des sciences et de la technologie, eau, [1996] |
| Auteur / Contributeur | Borgmann, Uwe, author. Borgmann, A., author. |
| Description | 1 online resource (15, [7] pages) : charts. |
| Numéro de catalogue |
|
| Descripteurs | Ammonia Hyalella azteca |
Demander des formats alternatifs
Pour demander une publication dans un format alternatif, remplissez le formulaire électronique des publications du gouvernement du Canada. Utilisez le champ du formulaire «question ou commentaire» pour spécifier la publication demandée.- Date de modification :