Friday, April 30, 2010, 11:00 am — John Dunn Seminar Room, Bldg. 463
The present study investigated the toxicity and biotransformation of Ni(OH)2 nanoparticles (NPs) by mesquite plants (Prosopis sp.). Plants were treated for four weeks with either uncoated or sodium citrate coated NPs before and after synthesis. The XAS analyses showed Ni NPs in roots and shoots of plants treated with uncoated NPs, while leaves showed a Ni(II)-organic acid type complex. However, plants treated with coated NPs before or after synthesis showed Ni NPs only in roots and a Ni(II)-organic acid complex in shoots and leaves. Results also showed that none of the treatments reduced plant size or chlorophyll production. To the authors’ knowledge, this is the first time that the biotransformation of nanoparticles by a plant system is reported.
Hosted by: Lee Newman
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