Publications

Displaying 76 - 100 of 198

Colloidal Properties and Stability of Aqueous Suspensions of Few Layer Graphene: Importance of Graphene Concentration

October 6, 2016

Author(s)

Yu Su, Elijah Petersen, Liang Mao

Understanding the agglomeration behaviors and stability of graphene in natural waters is essential for predicting its transport and fate in aquatic environments. In this study, the agglomeration and stability of 14C labeled few layer graphene (FLG) were

Toward Achieving Harmonization in a Nano-cytotoxicity Assay Measurement through an Interlaboratory Comparison Study

September 29, 2016

Author(s)

John T. Elliott, Matthias Roesslein, Nam W. Song, Blaza Toman, Agnieszka Kinsner-Ovaskainen, Rawiwan Maniratanachote, Marc L. Salit, Elijah J. Petersen, Fatima Sequeira, Jieun Lee, Francois Rossi, Cordula Hirsch, Harald Krug, Wongsakorn Suchaoin, Peter Wick

Design and development of reliable cell-based nanotoxicology assays is important for ranking of potential hazardous engineered nanomaterials. Challenges to producing a reliable assay protocol include working with nanoparticle dispersions and living cell

Design, sensitivity analysis, and testing of a Caenorhabditis elegans nanoecotoxicity assay

August 11, 2016

Author(s)

Shannon Hanna, Gregory A. Cooksey, Bryant C. Nelson, John T. Elliott, Elijah J. Petersen

Increasing production and usage of engineered nanomaterials (ENMs) has generated widespread interest in measuring their environmental and human health effects. However, the lack of standardized methods for these measurements has often led to contradictory

Bioaccumulation of Multiwall Carbon Nanotubes in Tetrahymena thermophila by Direct Feeding or Trophic Transfer

July 11, 2016

Author(s)

Monika Mortimer, Elijah Petersen, Bruce A. Buchholz, Eduardo Orias, Patricia Holden

Consumer goods contain multiwall carbon nanotubes (MWCNTs) that could be released during product life cycles into the environment, where their effects are uncertain. Here, we assessed MWCNT bioaccumulation in the protozoan Tetrahymena thermophila via

Nanomaterials in the aquatic environment: An EU-USA perspective on the status of ecotoxicity testing, research priorities and challenges ahead

June 19, 2016

Author(s)

Selck Henriette, Richard Handy, Teresa Fernandes, Stephen Klaine, Elijah Petersen

The US-EU Community of Research (CoR) was established in 2012 to provide a platform for scientists to develop a ‘shared repertoire of protocols and methods to overcome nanoEHS research gaps and barriers' (www.us-eu.org/). Based on work within the

Considerations of Environmentally-Relevant Test Conditions for Improved Evaluation of Ecological Hazards of Engineered Nanomaterials

June 8, 2016

Author(s)

Patricia Holden, Jorge Gardea-Torresdey, Frederick Klaessig, Ronald Turco, Monika Mortimer, Kerstin Hund-Rinke, David Avery, Damia Barcelo, Renata Behra, Yoram Cohen, Laurence Deydier-Stephan, Barbara Harthorn, Danail Hristozov, John Johnston, Agnes Kane, Larry Kaputska, Arturo Keller, Hunter Lenihan, Wess Lovell, Catherine Murphy, Roger Nisbet, Elijah Petersen, Martin Scheringer, Monita Sharma, David Speed, Yasir Sultan, Jason White, Eva Wong, Baoshan Xing, Meghan Steele Horan, Hilary Godwin, Andre Nel

Engineered nanomaterials (ENMs) entering the environment could impact biological populations or entire ecosystems. Ecotoxicology aims to determine effective concentrations, which often exceed those in the environment. ENM behaviors in complex media impede

Chironomus riparius exposure to fullerene-contaminated sediment results in oxidative stress and may impact life cycle parameters

April 8, 2016

Author(s)

Greta Waissi-Leinonen, S Bold, J Akkanen, Matti Leppanen, Elijah Petersen, JVK Kukkonen

A key component of understanding the potential environmental risks of fullerenes (nC60) is their potential effects on benthic invertebrates. Using the sediment dwelling invertebrate Chironomus riparius we explored the effects of acute (12 h and 24 h) and

Quantification of carbon nanotubes in environmental matrices: Current capabilities, case studies, and future improvements

April 6, 2016

Author(s)

Elijah J. Petersen, D. X. Flores-Cervantes, Thomas Bucheli, Lindsay C. Elliott, Jeffrey A. Fagan, Alexander Gogos, Shannon Hanna, Antonio R. Montoro Bustos, Desiree L. Plata, Vytautas Reipa, Paul Westerhoff, Michael R. Winchester, Elisabeth Mansfield

Carbon nanotubes (CNTs) have numerous exciting potential applications approaching commercialization. As such, quantitative measurements of CNTs in key environmental matrices (water, soil, sediment, and biological tissues) are needed to address concerns

Sorption of 14C-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of sorbent properties

March 8, 2016

Author(s)

Qing Zhao, Elijah Petersen, Xilong Wang, Xiaoying Guo, Shu Tao, Baoshan Xing

Developing methods to measure interactions of carbon nanotubes (CNTs) with soils and sediments and understanding the relative strength of each sorbent property for CNTs sorption are essential for assessing CNTs environmental risks. In this study, we

Biodistribution and Toxicity of Radio-labeled Few Layer Graphene in Mice after Intratracheal Instillation

February 11, 2016

Author(s)

Bingcai Pan, Maoji Hu, Liang Mao, Xuxiang Zhang, Elijah Petersen

BACKGROUND: The potential human health risks from graphene inhalation exposure have attracted substantial scientific interest as a result of the numerous exciting potential commercial applications of graphene. However, the long-term distribution in

Impact of and correction for instrument sensitivity drift on nanoparticle size measurements by single-particle ICP-MS

February 8, 2016

Author(s)

Hind El Hadri, Elijah Petersen, Michael R. Winchester

Engineered nanomaterials (ENMs) are already incorporated into numerous consumer products, and increasing product applications are expected in future years. To enable an understanding of potential risks associated with these products, it is important to

GC-MS/MS Measurement of Nanomaterial Induced Genotoxicity in Isolated DNA

November 24, 2015

Author(s)

Bryant C. Nelson, Elijah J. Petersen, Pawel Jaruga, M Miral Dizdar

Making accurate measurements of the environmental fate and environmental and biological effects of engineered nanomaterials (ENMs) is critical for reliable risk assessment of these materials. ENM induced oxidative stress and/or direct binding of ENMs to

GC/MS Measurement of Nanomaterial Induced Genotoxicity in Isolated DNA

November 24, 2015

Author(s)

Bryant C. Nelson, Elijah J. Petersen, Pawel Jaruga, M Miral Dizdar

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