nanoparticle News

  • Ingested nanoparticle safety

    Ingestion of commonly encountered nanoparticles at typical environmental levels is unlikely to cause overt toxicity, according to US researchers. Nevertheless there is insufficient evidence to determine whether chronic exposures could lead to subtle alterations in intestinal immune function, protein profiles, or microbial balance. Writing in a forthcoming issue of the International Journal of ...


    By Inderscience Publishers

  • Assessing the ecotoxicological risks of nanoparticles

    A new study highlights the need for more research aimed at understanding the effects of nanoparticles on the environment. Efforts should focus on developing more sensitive analytical methods for characterising and detecting nanoparticles, say the researchers. The study discusses engineered nanoparticles (ENPs), a diverse class of nanoscale particles that do not occur in nature, including ...

  • Environmental effects of nanoparticles and nanomaterials

    Pete and I attended the 6th International Meeting on the Environmental Effects of Nanoparticles and Nanomaterials in London last week. The meeting was organised by the Society for Experimental Biology (SEB) and the Society for Environmental Toxicology and Chemistry (SETAC). Plenary presentations were made across three days, with the first day focussing on chemistry, the second day on ...


    By WCA Environment Ltd.

  • Managing exposure to nanoparticles in the workplace

    It is estimated that approximately 2 million workers will be employed in nanotechnology industries worldwide in the next fifteen years. A new study reviews an existing framework of occupational risk management and describes possible methods for controlling exposure to nanomaterials in workplaces. The manufacture and use of nanomaterials is increasing. Although this is creating more jobs, those ...

  • Predicting the inflammatory potential of nanoparticles

    New methods to screen nanoparticles for potential toxicity to humans are needed to test the growing number of engineered nanoparticles being developed. A battery of simple tests has been developed that can be used to investigate the potential of nanoparticles to cause lung inflammation and also avoids the need for animal testing. Despite the many benefits of using nanomaterials, concerns have ...

  • Cholera toxin nanoparticle detector

    A complex sugar may become one of the most effective weapons to stop the spread of cholera, a disease that has claimed thousands of lives in Haiti since the devastating earthquake last year. A technique developed by University of Central Florida scientists would allow relief workers to test water sources for contamination with the cholera toxin. In the test, the sugar dextran is coated onto iron ...

  • Nanoparticles decontaminate groundwater

    Since their invention a decade ago at Lehigh University, iron nanoparticles 1,000 times thinner than a human hair have demonstrated an unprecedented ability to clean contaminated groundwater. The palladium-coated particles have remediated more than 50 toxic waste sites in the US and other countries in 10 times faster than traditional pump-and-treat methods. Researchers at Lehigh University have ...

  • The effects of sunscreen nanoparticles on skin DNA

    A new study indicates that zinc oxide nanoparticles have the potential to cause damage to DNA in human skin cells. These nanoparticles are used as UV filters in sunscreens in many parts of the world, although their use is not yet authorised in Europe (with the exception of one Member State). During the last two years, there has been a rapid growth in the use of nanotechnology, some of which has ...

  • Adding nanoparticles `makes for friendly biofuels`

    Adding 'nanoparticles' improves the ignition of biofuels and makes them emit less toxic fumes, Indian researchers report. The findings that adding alumina nanoparticles helps biofuels and conventional fuels release fewer toxic emissions and smoke when burned in internal combustion engines were published by Ramachandran Bhagavathiammal Anand, associate professor of mechanical engineering at the ...


    By SciDev.Net

  • Inhaled nanoparticles can enter the bloodstream

    Studies have found that populations who live in areas with polluted air, containing high levels of combustion-derived nanoparticles (fine particulate matter), are more likely to suffer from respiratory and cardiovascular diseases. This has raised concerns that nanoparticles are to blame and that engineered nanoparticles of a similar size could behave in the same way. It is important, therefore, ...

  • Air Monitors launches nanoparticle detector

    Traditional methods for measuring airborne particulate matter measure particle mass per unit air volume, usually with an upper size limit of x microns (PMx etc.). However, from a human health perspective, the particles of most interest are those that penetrate deep into the lungs. For this reason, Air Monitors has launched the Naneos Partector nanoparticle detector in the UK. The Swiss made ...


    By Air Monitors Ltd.

  • Nanoparticles and light can purify water

    Scientists have used nanotechnology to develop a more efficient way of using light to purify water — even in the dark. Light is often used as a water purifier and existing methods rely on processes stimulated by ultraviolet (UV) light. But UV accounts for just five per cent of daylight so a method using visible light — which accounts for almost half — is more desirable. Now researchers from ...


    By SciDev.Net

  • NIST scientists quantify nanoparticle-protein interactions

    A research team at the National Institute of Standards and Technology (NIST) has quantified the interaction of gold nanoparticles with important proteins found in human blood, an approach that should be useful in the development of nanoparticle-based medical therapies and for better understanding the physical origin of the toxicity of certain nanoparticles. Nanoparticles show promise as vehicles ...

  • Do nanoparticles affect the health of the soil ecosystem?

    New research reveals that many microorganisms, including bacteria and protozoa, show little sensitivity to fullerene nanoparticles applied to soil samples. However, fast-growing bacteria decreased in number and the genetic diversity of bacteria and protozoa altered slightly. This could affect the bottom of the food chain, which may have long-term implications for the overall health of the soil ...

  • First certified reference material for nanoparticle size analysis

    The European Commission's Joint Research Centre (JRC) has developed the world's first certified nanoparticle reference material based on industrysourced nanoparticles. This new material will help ensure the comparability of measurements worldwide, thereby facilitating trade, ensuring compliance with legislation and enhancing ...

  • The world’s first model for engineered nanoparticles in surface waters

    Researchers of Wageningen University provide the world’s first spatiotemporally explicit model that simulates the behaviour and fate of engineered nanoparticles (ENPs) in surface waters. Wageningen researcher Bart Koelmans: “This is important in order to assure safe nanotechnology. We do need to have an assessment of the risks of ENPs to man and the environment.” ...

  • Silver nanoparticles in sewage sludge harmful to soil microorganisms

    Recent research has found that silver nanoparticles in sewage sludge, which is used on agricultural land as a fertiliser, can be toxic to soil microorganisms. The researchers calculated that a maximum of 30mg of silver nanoparticles per kilogram of sludge can be applied to land before harm occurs, based on typical application rates in Germany of five tons per hectare of farmland every three ...

  • testo DiSCmini - The smallest nanoparticle counter in the world

    The Diffusion Size Classifier testo DiSCmini is a handheld sensor for the measurement of nanoparticle number, average diameter and lung-deposited surface area LDSA with a time resolution of up to 1 second (1Hz). The measuring principle is based on electrical charging of the aerosols. The small size of the testo DiSCmini makes the instrument particularly suitable for personal carry-on ...


    By Testo SE & Co. KGaA

  • Engineered nanoparticles: Understanding and managing potential risks

    Nanoparticles may be small, but they are at the centre of a huge debate. Nanotechnology has great potential for industry and society, but we need more awareness of the potential impact of manufactured or engineered nanoparticles on human health and the environment to ensure that its products are safe. Although nanotechnology is new, it is expanding quickly and research is needed to understand its ...

  • Protecting Workers from Exposure to Engineered Nanoparticles

    Nanotechnology, as defined by the National Institute for Occupational Safety and Health (NIOSH), is the manipulation of matter on a near-atomic scale to produce new structures, materials and devices. This technology promises scientific advancement in sectors including medicine, consumer products, energy, materials and manufacturing. According to the Occupational Safety & Health ...

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