Nanomaterials and the environment

Multimedia Environmental Distribution of Engineered Nanomaterials

Abstract Image† Center for the Environmental Implications of Nanotechnology, California Nanosystems Institute, University of California, Los Angeles, California 90095, United States

‡ Chemical and Biomolecular Engineering Department, University of California, Los Angeles, Los Angeles, California 90095, United States

Environ. Sci. Technol., 2014, 48 (6), pp 3281–3292

DOI: 10.1021/es405132z

Section:

Abstract

A compartmental multimedia model was developed to enable evaluation of the dynamic environmental multimedia mass distribution and concentrations of engineered nanomaterials (ENMs). The approach considers the environment as a collection of compartments, linked via fundamental environmental intermedia transport processes. Model simulations for various environmental scenarios indicated that ENM accumulation in the sediment increased significantly with increased ENMs attachment to suspended solids in water. Atmospheric dry and wet depositions can be important pathways for ENMs input to the terrestrial environment in the absence of direct and distributed ENM release to soil. Increased ENM concentration in water due to atmospheric deposition (wet and dry) is expected as direct ENM release to water diminishes. However, for soluble ENMs dissolution can be the dominant pathway for suspended ENM removal from water even compared to advection. Mass accumulation in the multimedia environment for the evaluated ENMs (metal, metal oxides, carbon nanotubes (CNT), nanoclays) was mostly in the soil and sediment. The present modeling approach, as illustrated via different test cases, is suited for “what if” first tier analyses to assess the multimedia mass distribution of ENMs and associated potential exposure concentrations.

Citing Articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

See also:
Nanomaterials and the environment: not all the news is bad.(Commentary; Cerulean International Ltd.; ): An article from: Nanoparticle News
Book (Business Communications Company, Inc.)

Impact Nanoparticles on Health and Environment

by tarlipps

University of Calgary chemistry professor David Cramb is a step closer to helping solve a complex problem in nanotechnology: the impact nanoparticles have on human health and the environment.
Cramb, director of the Faculty of Science's nanoscience program, and his researchers have developed a methodology to measure various aspects of nanoparticles in the blood stream of chicken embryos. Their discovery is published in the March online edition of Chemical Physics Letters.
"With the boom in nanomaterials production there is an increasing possibility of environmental and/or human exposure

Rocket fuel is in breastmilk, gm foods infecting

by bornagaingumby

Natural crops, and aquarium grass killing off natural habitats in the oceans. yeah, this wont get into the environment and do anything....we cant even keep mad cow out of our meat.
EPA to regulate form of nanotechnology By JOHN HEILPRIN, Associated Press Writer
Thu Nov 23, 7:47 AM ET
WASHINGTON - Consumer products using extremely small particles of silver to kill germs will need Environmental Protection Agency approval, part of the government's first move to regulate the burgeoning nanotechnology industry.
ADVERTISEMENT

Contrast Media/Contrast Agents Market (Radiology, Interventional Radiology ..  — PR Web
.. THE CONTRAST MEDIA MARKET. 3.3.1.3 INCREASING INCIDENCE & MORTALITY OF CANCER & CARDIAC DISEASES TO BOOST GROWTH OF CONTRAST MEDIA. 3.3.1.4 GROWTH OF MEDICAL IMAGING TECHNOLOGY IN EMERGING MARKETS.

Related Posts