CELLULAR FLUORESCENCE CAPACITY AS AN END-POINT IN ALGAL TOXICITY TESTING

Authors
Citation
Ja. Thompson, CELLULAR FLUORESCENCE CAPACITY AS AN END-POINT IN ALGAL TOXICITY TESTING, Chemosphere, 35(9), 1997, pp. 2027-2037
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Sciences
Journal title
ISSN journal
0045-6535
Volume
35
Issue
9
Year of publication
1997
Pages
2027 - 2037
Database
ISI
SICI code
0045-6535(1997)35:9<2027:CFCAAE>2.0.ZU;2-5
Abstract
The use of a cellular fluorescence capacity (CFC) index as a toxicity end point for the alga, Selenastrum copricornutum was examined. The in dex is calculated from algal fluorescence before (F) and after (F-d) t he addition of the herbicide 3(3,4-dichlorophenyl)-1,1-dimethyl urea ( DCMU) and is expressed as a proportion [(F-d-F)/F-d]. CFC was compared to algal growth response in 96-hours in bioassays with copper, zinc, pentachlorophenol, a complex mixture obtained from a sewage treatment works effluent and four sediment pore water samples. Although not alwa ys as sensitive as the 96-hour growth response, CFC was usually more s ensitive than the 24-hour growth response and was able to detect the t oxicity of copper to the alga species as early as 5 hours. CFC was a u seful endpoint in toxicity determinations and demonstrated potential a s a rapid short term screening response for toxicity. (C) 1997 Elsevie r Science Ltd.