Wednesday, October 2, 2013

It should be added that the concentrations of nanoparticles and silver salt which scientists operat


Nanotechnology is becoming commonplace, but what happens to the tiny man-made metal particles when released into the wild? This was one of the topics that were discussed at the SETAC meeting in Gothenburg this week.
Danish travel iron researchers have looked at how the worm can handle living in soil with nanoparticles of silver. These particles have antibacterial properties and are becoming travel iron very popular. For worms, which both drain and ventilate the soil, too much nanosilver be fatal. (Illustration: www.colourbox.no)
The tiny metal particles we use sunscreen spring, to keep the kitchen counter bacteria and make sunglass lenses that protect against UV rays, eventually ends up in the stomach for everything from mussels travel iron to earthworms, and inside the cells of green algae and fish.
Nanoparticles' potential hazards is one of the topics discussed when scientists from all over Europe troops on SETACs annual meeting in Gothenburg this week to presented results from recent research projects.
A study initiated by the Norwegian Institute for Water Research (NIVA), in collaboration with the University travel iron of Oslo and the Swedish and British universities, examines the silver particles are added detergents.
Silver is actually known to have antibacterial properties, and nanoparticles in silver is being used in more and more consumer goods such as washing machines, kitchen sponges, clothes, paint and countertops.
Researchers from NIVA seen on a Silver Nano washing machines of the brand Samsung - a washing machine travel iron according to manufacturer itself will redefine what we think of as clean. The machine contains 400 billion silver particles as it sent electricity through. According to the manufacturer, the method must do that over 99.99 percent of all bacteria in clothes door, and the tiny silver particles will also prevent bacteria settle on clothes for up to a month after washing.
The researchers checked what ended up in the water after different washing programs in Silver Nano-machine, and preliminary results suggest that nanoparticles disappears into the sewers travel iron and spread silver around in nature. A lot nanoparticles set too firm cotton fabric which was washed with this technique in the experiment.
The small silver travel iron particles can kill up to 650 different types of bacteria, researchers said in his presentation that the natural bacteria level in the water decreased significantly after being mixed with the effluent coming out of Samsung washing machine.
Lars-Henrik Heckmann from Aarhus University in Denmark has led a study of how nanoparticles of silver affects the earthworm Eisenia fetida. The researchers also checked travel iron how the field reacted to ionic silver or silver salt, and discovered that some of the genes were strongly influenced by the silver salt, while others had difficulty coping with the nanoparticles.
- We do not know yet whether this potential transformation occurs in the soil or inside the body of the worm, but we have started a project to look at this, says Heckmann to forskning.no. The researchers then partly how nanosilver affected earthworm gene expression and examined nine different genes.
- Nano Silver in soil is like a time bomb. When the concentration increases and the particles turn into ions, the mortality of organisms rise sharply and suddenly it was too much for the earthworm, he said.
It should be added that the concentrations of nanoparticles and silver salt which scientists operated in their experiments is much higher than can occur in nature, even after heavy pollution.
- We tried with concentrations well above what we can find out, for simply to find out the effect of the silver at the molecular level, but nanosilver are also becoming more popular.
- After a few years of using products with nano silver, and an accumulation of this water coming out of the treatment plant, we will probably see quite high concentrations. travel iron Especially in countries where the water goes straight from the treatment plant for irrigation in agriculture, says Heckmann.
Nanoparticles of copper is used in various types of ink, electronic circuit boards and antibiotics. Some researchers have also been made with copper particles to hydrogen fuel cells to function better.
Woo-Mi Lee and Youn-Joo An from Konkuk University in Seoul, travel iron South Korea h

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