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.
Change of different photosynthetic-based fluorescence parameters for algal cells of Chlorella vulgaris exposed during 72 h to different concentrations of SPION-1 (Fe3O4), SPION-2 (Co0.2Zn0.8Fe2O4), and SPION-3 (Co0.5Zn0.5Fe2O4). Maximal PSII quantum yield: F V/F M; ratio between the number of active PSII reaction centers and light harvesting Chl antenna size: ABS/RC; relative variable fluorescence yield at J transient: V J; performance index of PSII photochemical activity: P.I.
