TITLE

Investigation of Concentrations of Paddy Herbicides and Their Transformation Products in the Sakura River, Japan, and Toxicity of the Compounds to a Diatom and a Green Alga

AUTHOR(S)
Iwafune, Takashi; Ara, Takahiro; Ishihara, Satoru; Yokoyama, Atsushi; Nagai, Takashi; Horio, Takeshi
PUB. DATE
January 2012
SOURCE
Bulletin of Environmental Contamination & Toxicology;Jan2012, Vol. 88 Issue 1, p38
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Four paddy herbicides and their transformation products (TPs) were monitored in the Sakura River, Japan, during the rice growing seasons of 2009 and 2010. Toxicity tests to an attached diatom, Mayamaea atomus, and a green alga, Pseudokirchneriella subcapitata, were also conducted. Clomeprop propionic acid, which forms from the degrading herbicide, was detected in the river water at much higher concentrations than the parent compound (the maximum concentration of the TP and the parent compound; 0.829-0.925 μg/L and 0.039-0.073 μg/L, respectively). The toxicity of the TPs to the diatom and green alga was relatively low; the 72-h median effective concentration (EC) value > 1,470 μg/L; for each compound, the maximum concentration in the river did not exceed the EC value.
ACCESSION #
70119480

 

Related Articles

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics