Main Title |
Toxicity of Arsenite and Arsenate to the Marine Macroalga 'Champia parvula' (Rhodophyta). |
Author |
Thursby, G. B. ;
Steele, R. L. ;
|
CORP Author |
Environmental Research Lab., Narragansett, RI. |
Year Published |
1984 |
Report Number |
EPA/600/J-84/181; |
Stock Number |
PB85-146827 |
Additional Subjects |
Toxicology ;
Arsenite ;
Arsenate ;
Algae ;
Reprints ;
Champia parvula ;
Water pollution effects(Plants)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB85-146827 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
10p |
Abstract |
By a previously established test procedure that uses 4.5 micromoles phosphate in the medium, the marine red alga Champia parvula (C. Agardh) Harvey was shown to be more sensitive to arsenite (As(III)) than to arsenate (As(V)). Mature cystocarps (evidence of sexual reproduction) were formed when plants were exposed to 65 micrograms As(III)/L, but not when exposed to 95 micrograms As(III)/L. Three hundred micrograms As(III)/L was sufficient to kill C. parvula. Using the standardized test, plants grew just as well in 10,000 micrograms As(V)/L as they did in the controls; however, sexual reproduction did not occur at this concentration. Phosphate concentration up to 9.1 micromoles had little or no effect on As(III) toxicity. Arsenate toxicity, however, was inversely proportional to the amount of phosphate in the medium. In the absence of added phosphate, As(V) toxicity was similiar to that of As(III), except plants were still alive at 1,076 micrograms As(V)/L (although they did not grow). |
Supplementary Notes |
Pub. in Environmental Toxicology and Chemistry, v3 p391-397 1984. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Toxicity of Arsenite and Arsenate to the Marine Macroalga 'Champia parvula' (Rhodophyta). |
PUB Date Free Form |
1984 |
Category Codes |
6T; 6F; 57Y; 68D |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/05 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
507415557 |
Origin |
NTIS |
Type |
CAT |