nanoparticle Articles
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Silver-titania/polyurethane composite nanofibre mat for chemical and biological warfare protection
The silver-titania nanoparticles with various silver contents were prepared by introducing the silver onto titania surface. Presence of silver was confirmed by various analyses. Compared to neat titania nanoparticle, the silver-titania nanoparticle exhibits better visible light photocatalytic degradation of methylene blue. Loading of silver onto titania leads to an enhancement of the visible ...
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Personal protective equipment against nanoparticles
Nanomaterials manufacture and use are in full expansion. With them comes an increasing risk for human health, especially at the workplace. Indeed, the early signs of potential toxicity associated with nanotechnologies are piling up. Even if they must be considered as a last resource in a traditional occupational Health & Safety approach, personal protective equipment (PPE) against nanoparticles ...
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Environmental impact assessment for nanotechnologies: integrating the ecological and the chemical perspective
The development and application of products containing engineered nanoparticles (ENP) has dramatically increased over the past decade, whereas the assessment of potential hazards to humans and especially to the environment substantially falls behind. The UFT Centre for Environmental Research and Sustainable Technology at the University of Bremen focuses on environmentally benign nanomaterials. ...
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A risk management framework for the regulation of nanomaterials
Nanotechnology promises a plethora of benefits to society. Early research has established that some types of nanomaterials may be highly toxic to living systems, while others are seemingly inert. Nanotoxicology is a new field that has become the focus for risk assessment and management of nanomaterials. To address the potential risks either current chemical and particulate material regulations ...
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Companies Appeal ECHA’s Decision on Silicon Dioxide
On August 19, 2015, the European Chemicals Agency (ECHA) announced appeals of its March 11, 2015, decision on substance evaluation for silicon dioxide. Case A-015-2015 was filed by Evonik Degussa GmbH and 34 others, while Case A-014-2015 was filed by Grace GmbH & Co. KG. The appellants in Case A-015-2015 challenge ECHA’s decision to include silicon dioxide on the Community Rolling ...
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Green Nanotechnology: Straddling promise and uncertainty
Nanotechnology has been called the second Industrial Revolution. Its seemingly limitless potential will continue to inspire innovations in a dizzying array of beneficial applications and briskly transform society. Despite the hope and promise nanotechnology brings, engineered nanoparticles, the tiny engines driving this new transformative technology, also generate a palpable apprehension due to ...
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WHO Meeting Report States Precautionary Approach Towards Nanomaterials `Seems Desirable`
The World Health Organization (WHO) recently published the report of the December 10-11, 2012, WHO expert meeting entitled Nanotechnology and human health: Scientific evidence and risk governance. The conclusion states that while “first generation nanomaterials are being used in a variety of applications and products, they do not seem to present an imminent public health issue.” The ...
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Surface modified polythiophene nanocomposite using HPC and DBSNa for heavy metal ion removal
In the present work, surface modified nanocomposite adsorbents polythiophene (PTh)/rice husk ash (RHA) have successfully been synthesized in the presence of hydroxyl propyl cellulose (HPC) and sodium dodecyl benzene sulfonate (DBSNa) as surfactants. The synthesized nanoparticles were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier ...
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What is the challenge with the dichromate COD approach and why is an alternative method required?
Ask The Expert: What is the challenge with the dichromate COD approach and why is an alternative method required? Answer: The traditional COD analysis approach has been used for decades and is based on the use of potassium dichromate, one of the reagents necessary for dichromate COD (CODCr) analysis. Dichromate is listed as a “Substance of Very High Concern” on the Annex XIV list of ...
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EPA Proposes SNUR for Functionalized Carbon Nanotubes (Generic)
On October 27, 2016, the U.S. Environmental Protection Agency (EPA) proposed significant new use rules (SNUR) for three chemical substances that were the subject of premanufacture notices (PMN), including functionalized carbon nanotubes (generic). According to the notice, the PMN states that the substance will be used as a thin film for electronic device applications. Based on structure-activity ...
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Synopsis Available for 2016 U.S.-EU: Bridging NanoEHS Research Efforts Joint Workshop
The synopsis is available for the June 6-7, 2016, U.S.-European Union (EU) Nano Environmental and Health Safety (NanoEHS) Research Efforts joint workshop. According to the synopsis, the first day of the workshop was devoted to an interactive nanoEHS scrimmage in which the groups collectively responded to a spill of a hypothetical nanotechnology-enabled product. U.S.-EU Communities of Research ...
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OECD Tour de Table Reports on Developments on Safety of Manufactured Nanomaterials
The Organization for Economic Cooperation and Development (OECD) published a May 17, 2018, document entitled Developments in Delegations on the Safety of Manufactured Nanomaterials — Tour de Table. The document compiles information provided by delegations for the February 2018 OECD Working Party on Manufactured Nanomaterials (WPMN) meeting on current developments on the safety of ...
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Nanotechnologies and FIFRA - Gradient Corporation EH&S Nano News, April 2006
Untitled Document Bergeson & Campbell, P.C. is pleased to announce that Lynn L. Bergeson published an article appearing in the April 2006 issue of Gradient Corporation EH&S Nano News . The article discusses applications of nanotechnologies in the agricultural sector and a few of the issues the U.S. Environmental Protection Agency Office of Pesticide Programs is now considering. ...
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Why is air purification important at dental practices?
Numerous chemicals with adverse health effects are used at dental practices. Customers’ exposure to these is limited, because they only spend a short time at the dentist’s every so often. The staff, however, spend their days on the same premises year in, year out. This makes safe indoor air particularly important to them. Chemicals at a dental practice – where do they come ...
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We need a global treaty on plastics. Here’s what it should look like.
Plastic pollution is more than an ocean problem, and it’s time we treat it as such. Plastics have boosted our economy because they are versatile, cheap and durable. Yet, thanks to these same traits, in the course of establishing a US$750 billion global industry, we have also created a massive problem. Rivers are filled with plastic garbage. Plastic bottles soil beaches. Masses of plastic ...
By Ensia
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op Precautions you Must Follow when Handling Corrosive Chemicals in the Lab
If you’ve been a part of the scientific community for a long time, we don’t need to tell you that there is an extensive list of precautions you must follow when handling chemicals in a lab. However, if you’re relatively new or could use some brushing up, give this article a read. We highlight key precautions you should follow when handling corrosive chemicals in the lab. ...
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Recent Federal Developments
TSCA/FIFRA EPA Extends Comment Period For Draft Guidance For Pesticide Registrants On Notifications, Non-notifications, And Minor Formulation Amendments: On October 5, 2017, the U.S. Environmental Protection Agency (EPA) issued a notice of extension of the comment period for the draft guidance Pesticide Registration Notice (PR Notice) 2017-XX: Notifications, Non-notifications and Minor ...
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