Analytical And Bioanalytical Approaches For The Investigation Of Fate Of Engineered Nanoparticles In Aquatic Environments | 10216
Journal of Analytical & Bioanalytical Techniques
Like us on:
Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.
Changes and transformation in size distribution of nanoparticles has a tremendous impact on the evaluation of their potential
effects, including environmental aspects such as their fate and exposure routes to aquatic organisms. Transformation of
nanosilver (nAg) was evaluated in both Milli-Q water and natural river water samples. Ultrafiltration techniques were used for
size fractionation of the studied nanoparticles where transformation products were divided from coarse colloids to permeable
fraction (<1kDa). Agglomeration alterations were observed where most of the studied particles had a size greater than 0.45 um,
which are considered as insoluble in natural waters. Aggregation of QDs was significantly enhanced by the natural organic matter.
The fate of nAg was observed to be similar in natural waters where most material was also found in the large aggregate fraction,
but with some (10?15 %) found as nano-sized particles. Naturally occurring dissolved organic matter (eg., humic material)
likely influences the fate of this type of nanomaterial in maintaining it in colloidal forms and large aggregates. Bioavailability and
bioaccumulation were evaluated following controlled exposure experiments using mussels. Nanoparticles were then detected
in the biological tissues by techniques based on specific atomization energy levels. Further characterization (eg., spectroscopy
techniques) and independent validations of the particle sizes of sample fractions were also performed.
Gagnon C has completed his Ph.D. from University of Qu?bec and postdoctoral studies from the State University of New York at Stony Brook. He
is a senior research scientist and head at Environment Canada. He has published more than 75 papers in reputed journals on topics related to the
environmental fate of contaminants.
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals