Graduate Thesis Or Dissertation
 

The lethal and sublethal effects of a zirconium process effluent on juvenile salmonids

Público Deposited

Contenido Descargable

Descargar PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/gt54kq40f

Descriptions

Attribute NameValues
Creator
Abstract
  • Acute toxicity bioassays and growth studies, with juvenile salmon as test animals, were used to identify and characterize the major toxic components of a zirconium process effluent (ZPE) produced by Teledyne Wah Chang Albany Corporation. The major toxic component of the ZPE is ammonia. Although other components of the ZPE are toxic, the major portion of the toxicity can be accounted for by the ammonia concentration, so long as ammonia concentrations remain high. The ZPE was more toxic than ammonium chloride solutions having the same ammonia concentration on the basis of acute toxicity and growth studies. The growth rate of juvenile chinook salmon (Oncorhynchus tshawytscha) at high consumption rates was higher in ammonium chloride solutions having ammonia concentrations less than 3 mg/liter, as compared to control groups. Ammonia concentrations greater than 3 mg/liter led to decreased growth rates of juvenile chinook salmon. ZPE solutions caused a decrease in the growth rate of juvenile chinook salmon at ammonia concentrations of 0.3, 1.78, 4.5 and 7.44 mg/liter. The zirconium process effluent reduced the growth rate of juvenile salmonids at concentrations of effluent near to those found in the Willamette River.
Resource Type
Fecha Disponible
Fecha de Emisión
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Declaración de derechos
Publisher
Peer Reviewed
Language
Digitization Specifications
  • PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0.82, on a Canon DR-9080C. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces

Relaciones

Parents:

This work has no parents.

En Collection:

Elementos

Miniatura Título Fecha de subida Visibilidad Acciones
file details WilsonEverettFrederick1974.pdf 2017-08-07 Público Descargar