OH goody. Tons of research money going to protect the plants and environment and not one damn test to see if it croaks animals like us before it gets loose in the environment. Typical.
Monona Rossol, M.S., M.F.A., Industrial HygienistPresident: Arts, Crafts & Theater Safety, Inc.Safety Officer: Local USA829, IATSE181 Thompson St., #23New York, NY 10012 212-777-0062
From: Secretary, ACS Division of Chemical Health and Safety <secretary**At_Symbol_Here**DCHAS.ORG>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Sent: Thu, Jul 30, 2015 7:16 am
Subject: [DCHAS-L] Reducing Environmental Toxicity of Silver Nanoparticles through Shape Control
There's an interesting article on environmental aspects of nanoparticles at the ES&T web site. - Ralph Reducing Environmental Toxicity of Silver Nanoparticles through Shape Control https://urldefense.proofpoint.com/v2/url?u=http-3A__pubs.acs.org_doi_full_10.1021_acs.est.5b01711&d=BQIFaQ&c=lb62iw4YL4RFalcE2hQUQealT9-RXrryqt9KZX2qu2s&r=meWM1Buqv4IQ27AlK1OJRjcQl09S1Zta6YXKalY_Io0&m=hF1qzwnxV644CAs1LKqyDod_wvkVm_0Um9US3g4FdPA&s=rOp8niWFn4SmimlqAjXSZuxcnblSZ8t7E5M86Yk7y2Q&e= The use of antibacterial silver nanomaterials in consumer products ranging from textiles to toys has given rise to concerns over their environmental toxicity. These materials, primarily nanoparticles, have been shown to be toxic to a wide range of organisms; thus methods and materials that reduce their environmental toxicity while retaining their useful antibacterial properties can potentially solve this problem. Here we demonstrate that silver nanocubes display a lower toxicity toward the model plant species Lolium multiflorum while showing similar toxicity toward other environmentally relevant and model organisms (Danio rerio and Caenorhabditis elegans) and bacterial species (Esherichia coli, Bacillus cereus, and Pseudomonas aeruginosa) compared to quasi-spherical silver nanoparticles and silver nanowires. More specifically, in the L. multiflorum experiments, the roots of silver nanocube treated plants were 5.3% shorter than the control, while silver nanoparticle treated plant roots were 39.6% shorter than the control. The findings here could assist in the future development of new antibacterial products that cause less environmental toxicity after their intended use.
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