Navigation Links
Is nanosilver toxic?
Date:2/28/2013

For his doctoral dissertation Niskanen has been studying several hybrid nanomaterials, i.e. combinations of synthetic polymers and inorganic (gold, silver and montmorillonite) nanoparticles. He will defend his doctoral thesis at the University of Helsinki in April.

Part of the magic of nano-science is that on the scale of a billionth of a metre, matter and materials behave in ways that are not yet known. Neither is it always known what types of effects the nano version of the parent matter will have on its environment.

"Due to the fact that silver in nanoparticle form is bactericidal and also fungicidal and also prevents the reproduction of those organisms, it is now used in various consumer goods ranging from wound dressing products to sportswear," says Niskanen from the Laboratory of Polymer Chemistry at the University of Helsinki, Finland.

While the usefulness of silver has been established, the debate over the toxicity mechanisms of its various forms to microorganisms but also to non-target species continues. Anne Kahru, Head of the Laboratory of Environmental Toxicology at the National Institute of Chemical Physics and Biophysics, Estonia, talks about a whole new field of ecotoxicology: nanoecotoxicology.

So far, little is known about the environmental effects of silver nanoparticles and their toxicity to aquatic organisms. A joint study from the University of Helsinki and the National Institute of Chemical Physics and Biophysics (Tallinn, Estonia), "Toxicity of two types of silver nanoparticles to aquatic crustaceans Daphnia magna and Thamnocephalus platyurus", shows that silver nanoparticles are apparently no more hazardous to aquatic ecosystems than a water-soluble silver salt. The study compared the ecotoxicity of silver nanoparticles and a water-soluble silver salt.

"Our conclusion was that the environmental risks caused by silver nanoparticles are seemingly not higher than those caused by a
'/>"/>

Contact: Jukka Niskanen
jukka.niskanen@helsinki.fi
University of Helsinki
Source:Eurekalert

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2015)... PALM BEACH GARDENS, Fla. , June ... of multi-factor identity management and authentication solutions, today ... Altus strong, multi-factor authentication solution.  The ... ease of use of the DigitalPersona Altus ... and biometric reader compatibility. In ...
(Date:6/17/2015)... , Deutschland und GERMANTOWN, Maryland , ... ®   Produktlinie mit DNA-Tests verbessert ... N.V. (NASDAQ: QGEN ; Frankfurt Prime Standard: QIA) ... neue STR-Testkits der Produktlinie Investigator ® ... den Markt eingeführt. Die neuen Kits zur Erstellung genetischer ...
(Date:6/17/2015)... , June 17, 2015  Crossmatch™, a leading ... that its U.are.U ® 4500 fingerprint readers ... Eateries, Inc., a San Jose, ... to increase security, improve accountability and reduce fraud ... instant, non-repudiable identity confirmation for employee sign in ...
Breaking Biology News(10 mins):Crossmatch Releases Enhanced DigitalPersona Altus Advanced Authentication Functionality 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 2Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 3
... 2007) – A Virginia Commonwealth University Massey Cancer Center ... $1.3 million from the National Cancer Institute to improve ... as histone deacetylase inhibitors, in the treatment of leukemia ... Steven Grant, M.D., Massey,s associate director for translational research ...
... recent years, there has been growing interest in the ... into soils via manure application is of environmental relevance. ... of the journal CLEAN, Kreuzig and co-workers now focused ... valuable data to the so far available data set ...
... , Research on hydrogen-fueled cars may be one ... hydride discovered by scientists at the ESRF. The material, lithium ... weight percents of hydrogen, which makes it attractive for use ... hydrogen at quite high temperatures (above 300C). The team has ...
Cached Biology News:NCI renewal grant to develop new cancer therapies 2New insights into the fate of antiparasitics in manure and manured soils 2New form of compound stimulates research on hydrogen storage 2New form of compound stimulates research on hydrogen storage 3
(Date:7/1/2015)... Costa Mesa, CA (PRWEB) , ... July 01, 2015 , ... ... and traumatic brain injury (TBI) using single photon emission computed tomography (SPECT) ... Columbia. The study, which examined over 20,000 brain scans and is believed to ...
(Date:7/1/2015)... and BANGALORE, India , July 1, ... company that uses next generation sequencing technology to empower ... A. Storrer as chief executive officer. In his ... be responsible for all strategy, business expansion and worldwide ... has served as Strand,s chairman and CEO since its ...
(Date:7/1/2015)... ... July 01, 2015 , ... A newly launched business plan contest will ... barriers to innovation in life sciences R&D. The Pistoia Alliance President’s Startup Challenge 2015 ... US$15,000 and a period of expert mentorship from a senior industry figure drawn from ...
(Date:7/1/2015)... July 1, 2015  UCB, a multinational biopharmaceutical ... global leader in designing, transforming, and running intelligent ... in recognition of their close collaboration in driving ... global business services (GBS) finance organization. ... clients that work together effectively to embrace the ...
Breaking Biology Technology:Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 2Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 3Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 4Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 2Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 3Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 2UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 4UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 5
... MONMOUTH JUNCTION, N.J., Aug. 11, 2011 Insmed Incorporated ... Timothy Whitten, President and CEO of Insmed, will be ... Life Sciences Management Access Conference on Tuesday, August 16, ... A live audio webcast will be available on ...
... International (CDI) announced today the recent launch of its ... researchers, understanding of induced pluripotent stem cells (iPSCs), the ... and applications of this new in vitro cellular model ... "The off-the-shelf availability of high quality human cell ...
... is pioneering new compound management discussion platform with launch of the ... Online event, which will take an innovative form of 11 ... st   of October 2011. ... agenda for many organisations and this was recently recognised by Dr. ...
Cached Biology Technology:Insmed to Present at 2011 Wedbush Securities Life Sciences Management Access Conference 2Cellular Dynamics Launches Innovative Research Grant Program 2Compound Management and Integrity Goes Online 2Compound Management and Integrity Goes Online 3
... developed for use with immunohistochemical (IHC) ... background staining due to endogenous peroxidase. ... with hydrogen peroxide. This reagent ... additional novel components to further quench ...
Phospho-Btk (Tyr223) Antibody...
Rad51B...
p27 rabbit polyclonal antibody...
Biology Products: