Abstract:
:Acute toxicity tests of selenium dioxide were conducted for 96 to 336 hr in intermittent-flow bioassay systems using six species of freshwater fish. The decreasing order of species sensitivity was: fathead minnow, flagfish, brook trout, channel catfish, goldfish, and bluegil. Curves relating median lethal concentration to exposure time for each species exposed for more than 168 hr were sigmoid in shape and were characterized by a change in slope indicating a more rapid mortality rate after 96 to 168 hr toxicant exposure. The 96-hr LC50 estimates ranged from 2.9 mg/L SeO2 for fathead minnow fry to 40.0 mg/L for bluegill juveniles. Effects of brief toxicant exposure (24 hr) on fathead minnow and flagfish juveniles included limited delayed mortality and no effects on growth over a 28-day period.
journal_name
Arch Environ Contam Toxicoljournal_title
Archives of environmental contamination and toxicologyauthors
Cardwell RD,Foreman DG,Payne TR,Wilbur DJdoi
10.1007/BF02221018subject
Has Abstractpub_date
1976-01-01 00:00:00pages
129-44issue
2eissn
0090-4341issn
1432-0703journal_volume
4pub_type
杂志文章abstract::Persistent organic pollutants, such as organochlorine insecticides and polychlorinated biphenyls (PCBs), were measured in several environmental matrices including aerial deposition, seawater, sediment, and biota in two important coastal wetlands of Hong Kong, China. Specifically, samples were collected from within the...
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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