Pubblicazione scientifica

Influence of Algae Age and Population on the Response to TiO2 Nanoparticles

FILONE TECNOLOGICO	TEMA
produzione e raccolta

RIASSUNTO

This work shows the influence of algae age (at the time of the exposure) and the initial algae population on the response of green algae Raphidocelis subcapitata to titanium dioxide nanoparticles (TiO2 NPs). The different algae age was obtained by changes in flow rate of continually stirred tank reactors prior to NP exposure. Increased algae age led to a decreased growth, variations in chlorophyll content, and an increased lipid peroxidation. Increased initial algae population (0.3−4.2 × 106 cells/mL) at a constant NP concentration (100 mg/L) caused a decline in the growth of algae. With increased initial algae population, the lipid peroxidation and chlorophyll both initially decreased and then increased. Lipid peroxidation had 4× the amount of the control at high and low initial population but, at mid-ranged initial population, had approximately half the control value. Chlorophyll a results also showed a similar trend. These results indicate that the physiological state of the algae is important for the toxicological effect of TiO2 NPs. The condition of algae and exposure regime must be considered in detail when assessing the toxicological response of NPs to algae.

DATA

Data di pubblicazione: 25/03/2018

AUTORI

METZLER DAVID M
ERDEM AYCA
HUANG CHIN PAO

ENTE DI AFFERENZA

SCHOOL OF ARTS & SCIENCES GWYNEDD MERCY UNIV GWYNEDD VALLEY PA 19437 USA METZLER D GMERCYU EDU
DEPT ENVIRONMENTAL ENG AKDENIZ UNIV ANTALYA 07058 TURKEY
DEPT CIVIL & ENVIRONMENTAL ENG UNIV DELAWARE NEWARK DE 19711 USA HUANG UDEL EDU

RIVISTA

International Journal of Environmental Research and Public Health, 15(4), 585

IMPACT FACTOR

2,620

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