The manufacturing of nanomaterials has been steadily on the rise in the medical, industrial, and scientific fields. Nanomaterials are materials that are engineered to have dimensions less than 100 nanometers and have very unique properties as a result of their small size.
In a study funded by the U.S. Environmental Protection Agency, a team of scientists from the University of Kentucky determined that earthworms could absorb copper nanoparticles present in soil.
One crucial step in determining the uptake of nanomaterials was discerning whether uptake of metal ions was released from the nanomaterials or the nanomaterials themselves. Using x-ray analysis, researchers were able to differentiate between copper ions and copper nanoparticles by examining the oxidation state of copper in the earthworm tissues.
Many products will release their nanomaterials either as a result of regular use or after disposal. These discarded nanoparticles could enter waterways and eventually soil. According to the authors, it is unclear how nanomaterials interact in the environment due to lack of scientific research; however, there is a possibility of unintentional ingestion by humans and animals.
Jason Unrine, the lead author of the study said, "This was one of the first studies to demonstrate that engineered nanomaterials can be taken up from the soil by soil organisms and enter food chains, and it has significant implications in terms of potential exposure to nanomaterials for both humans and ecological receptor species."
Unrine assures that ongoing studies are being conducted on transformation, bioavailability, trophic transfer, and adverse effects of engineered nanomaterials in terrestrial ecosystems.
Nanomaterials are used in a variety of instruments and consumer goods including protective coatings and solar cells.
The results of the study will be published in the November/December 2010 issue of the Journal of Environmental Quality
The full article is available for no charge for 30 days following the date of this summary. View the abstract at https://www.agronomy.org/publications/jeq/abstracts/39/6/1942.
The Journal of Environmental Quality is a peer-reviewed, international journal of environmental quality in natural and agricultural ecosystems published six times a year by the American Society of Agronomy (ASA), Crop Science Society of America (CSSA), and the Soil Science Society of America (SSSA). The Journal of Environmental Quality covers various aspects of anthropogenic impacts on the environment, including terrestrial, atmospheric, and aquatic systems.
The American Society of Agronomy (ASA) www.agronomy.org, is a scientific society helping its 8,000+ members advance the disciplines and practices of agronomy by supporting professional growth and science policy initiatives, and by providing quality, research-based publications and a variety of member services.
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
New study from the University of Halle: How climate change alters plant growth
12.01.2018 | Martin-Luther-Universität Halle-Wittenberg
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Life Sciences
21.02.2018 | Life Sciences
21.02.2018 | Materials Sciences