Record Details
The lethal and sublethal effects of a zirconium process effluent on juvenile salmonids
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | The lethal and sublethal effects of a zirconium process effluent on juvenile salmonids |
| Names |
Wilson, Everett F.
(creator) Warren, Charles E. (advisor) |
| Date Issued | 1974-02-28 (iso8601) |
| Note | Graduation date: 1974 |
| 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. |
| Genre | Thesis/Dissertation |
| Topic | Zirconium -- Toxicology |
| Identifier | http://hdl.handle.net/1957/15014 |
