It depends on how much you use. I added 4 ounces of 10ppm cs (good
clear ionic) to a 2 gallon bowl that had an algae problem and the
fish (a betta in good health) showed signs of distress by flapping
his gills fast and swimming in a circle real fast then died before I
could get him out.
Dave
At 09:12 AM 4/14/2008, you wrote:
They certainly distort or blatantly lie about the facts. "Once the
silver ions get into the gills of fish, it's a pretty efficient
killer" In fact I've used silver to treat body fungus on my
butterfly koi who have gone on to spawn and produce healthy
fry. They don't die from it. If you use a biological filter you
don't want silver in the main pond or tank water as it will kill off
the needed microbes in the filter, but to hospitalize a fish with a
problem in a separate tank with silver works well.
Silvia
-----Original Message-----
From: Nenah Sylver [mailto:[email protected]]
Sent: Monday, April 14, 2008 6:55 AM
To: silver-l...@eskimo. Com
Subject: CS>article on Nanoparticles unfairly and inaccurately singles out CS
<http://globalresearch.ca/index.php?context=va&aid=8638>http://globalresearch.ca/index.php?context=va&aid=8638
Scientists Scared as Nanotechnology and Nanoparticles Become Common
in Consumer Products
Valued for it's antibacterial and odor-fighting properties,
nanoparticle silver is becoming the star attraction in a range of
products from socks to bandages to washing machines. But as silver's
benefits propel it to the forefront of consumer nanomaterials,
scientists are recommending a closer examination of the unforeseen
environmental and health consequences of nanosilver.
"The general public needs to be aware that there are unknown risks
associated with the products they buy containing nanomaterials,"
researchers Paul Westerhoff and Troy M. Benn said in a report
scheduled for the 235th national meeting of the
<http://www.acs.org/>American Chemical Society (ACS).
Westerhoff and Benn report that ordinary laundering can wash off
substantial amounts of the nanosilver particles from socks
impregnated with the material. The Arizona State researchers suggest
that the particles, intended to prevent foot odor, could travel
through a wastewater treatment system and enter natural waterways
where they might have unwanted effects on aquatic organisms living
in the water and possibly humans, too.
"This is the first report of anyone looking at the release of silver
from this type of manufactured clothing product," said the authors.
Behind those concerns lies a very simple experiment. Benn and
Westerhoff bought six pairs of name brand anti-odor socks
impregnated with nanosilver. They soaked them in a jar of room
temperature distilled water, shook the contents for an hour and
tested the water for two types of silver - the harmful "ionic" form
and the less-studied nanoparticle variety.
"From what we saw, different socks released silver at different
rates, suggesting that there may be a manufacturing process that
will keep the silver in the socks better," said Benn. "Some of the
sock materials released all of the silver in the first few washings,
others gradually released it. Some didn't release any silver." The
researchers will present the specific brands they studied at their
ACS presentation.
If sufficient nanosilver leeches out of these socks and escapes
waste water treatment systems into nearby lakes, rivers and streams,
it could damage aquatic ecosystems, said Benn. Ionic silver, the
dissolved form of the element, does not just attack odor-causing
bacteria. It can also hijack chemical processes essential for life
in other microbes and aquatic animals.
"If you start releasing ionic silver, it is detrimental to all
aquatic biota. Once the silver ions get into the gills of fish, it's
a pretty efficient killer," said Benn. Ionic silver is only toxic to
humans at very high levels. The toxicity of nanoparticle silver,
said Westerhoff, has yet to be determined.
Westerhoff and Benn did not intend to establish the toxicity of
silver. "The history of silver and silver regulation has been set
for decades by the U. S. Environmental Protection Agency - we're not
trying to re-examine or reinvent that," said Westerhoff.
They do hope to spark a broader examination of the environmental and
health consequences of nanomaterials, as well as increasing
awareness of nanotechnology's role in everyday consumer goods.
Silver has been used historically since ancient roman times, though
its nanoparticle form has only recently appeared in consumer
products. Beyond socks, nanosilver appears in certain bandages,
athletic wear and cleaning products. Benn suggested that most
consumers are unaware of these nano-additions.
"I've spoken with a lot of people who don't necessarily know what
nanotechnology is but they are out there buying products with
nanoparticles in them. If the public doesn't know the possible
environmental disadvantages of using these nanomaterials, they
cannot make an informed decision on why or why not to buy a product
containing nanomaterials," said Benn.
To that end, the researchers suggest that improved product labelling
could help. Westerhoff proposes that clothing labels could become
like the back of a food packaging, complete with a list of
"ingredients" like nanosilver.
Westerhoff and Benn expect to expand their leeching experiments to
other consumer products imbued with nanomaterials. They hope to find
the moment in each product's lifecycle when nanomaterials could be
released into the environment, as well as developing better
detection methods to characterize nanoparticles in water and air samples.
"Our work suggests that consumer groups need to start thinking about
these things," said Benn. "Should there be other standards for these products."
--
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