Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Variation of the concentration of the pesticides as a function of time under UV irradiation in absence of photocatalysts (orange), presence of TiO2 (blue) and ZnO (green) for (a) atrazine, (b) heptachlor, (c) dimethoate, (d) methomyl, (e) chlorpyrifos methyl.
