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Nanotechnology & Health
a collection of articles about nanomaterials and health
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EHP – Evaluating Nanoparticle Breakthrough during Drinking Water Treatment

"Although a majority of aggregated or stable NPs [nanoparticles] were removed by simulated conventional and advanced treatment, NP metals were detectable in finished water. As environmental NP concentrations increase, we need to consider NPs as emerging drinking water contaminants, and determine appropriate drinking water treatment processes to fully remove NPs in an effort to reduce their potential harmful health outcomes."

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Effects of particle size and coating on nanoscale Ag and TiO2 exposure in zebrafish (Danio rerio) embryos, Nanotoxicology, Informa Healthcare

Effects of particle size and coating on nanoscale Ag and TiO2 exposure in zebrafish (Danio rerio) embryos, Nanotoxicology, Informa Healthcare | Nanotechnology & Health | Scoop.it

"Manufactured metal (oxide) nanoparticles are entering the aquatic environment with little understanding on their potential health impacts for exposed organisms. Adopting an integrative approach, we investigated effects of particle size and coating on biological responses for two of the most commonly used metal (oxide) nanoscale particles, silver (Ag) and titanium dioxide (TiO2) in zebrafish embryos... Ag both in nano form (10 nm and 35 nm) and its larger counterpart (600–1600 nm) induced dose-dependent lethality and morphological defects, occurring predominantly during gastrula stage. Of the silver material tested 10 nm nanoparticles appeared to be the most toxic... Collectively, our data suggest that silver ions play a major role in the toxicity of Ag nanoparticles."

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'Self-cleaning' pollution-control technology could do more harm than good, study suggests

Environmental scientists shows that air-pollution-removal technology used in "self-cleaning" paints and building surfaces may actually cause more problems than they solve. The study finds that titanium dioxide coatings, seen as promising for their role in breaking down airborne pollutants on contact, are likely in real-world conditions to convert abundant ammonia to nitrogen oxide, the key precursor of harmful ozone pollution.
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Chemical Watch | News| Nanoparticles may affect water species ability to detect prey

Scientists have highlighted that citrate-coated silver nanoparticles may have a significant effect on ecological populations by influencing the ability of organisms to detect and avoid predators in the environment.
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