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Quote:
Originally Posted by echnidna
Google is such a wonderfull thing I typed in exactly what you asked Echnidna "documented cases of arsenic poisoning from casual contact with cca treated pine."
and found this
http://www.apvma.gov.au/chemrev/down...rsenic_tox.pdf
other than that maybe department of statistics in ACT might help you or medical records would have to be the next step.
But that could be like looking for snow in Australia www.ski.com.au easy to find if its a good season
Thank you Wheelin. I read most of it (well, it is 60 pages) and sure enough, CCA treated wood is negligibly toxic. Although banned in the USA for residential use after 1 Jan 2004, it is still available for industrial and agricultural use and is considered quite safe.Quote:
Originally Posted by wheelinround
(The new stuff, BTW, has so much copper in it that one had better choose their fasteners carefully or they will corrode and disappear rather quickly.) :)
Thats all well and good.Quote:
Originally Posted by wheelinround
But, Go and read a MSDS sheet on powdered Milk. You will not believe what it says about causing abnormal intestinal growths in rats and mice. Also the effects of skin contact, irritation of mucus membranes, irritation of eyes.
Now Powdered Milk is fed to our babies and children. What do you think is more dangerous, CCA or Powdered milk?
We don't force feed CCA to our young, do we?
Every one knows that the APVMA is loaded with anti-everything types. They are spindoctors just like every other public funded entity that must produce publishable crapola to justify their future funding. They couldn't give 2 knobs of Goat schit about it actually being factual. So long as the Sheeple believe their hype, they will continue to spin away.
I didn't read a bit of it HB glad you did and had the time to.Quote:
Thank you Wheelin. I read most of it (well, it is 60 pages) and sure enough, CCA treated wood is negligibly toxic. Although banned in the USA for residential use after 1 Jan 2004, it is still available for industrial and agricultural use and is considered quite safe.
I recall back in the 70's picking some up for a boss and unloading it they called it Copper Logs back then. Our hands were covered in it one of the fellows had a shower then go to the Dr's/hospital seems he had a reaction he was a fitness nut. The other 3 of us no problem.
Everything you said is true GlockQuote:
Thats all well and good.
But, Go and read a MSDS sheet on powdered Milk. You will not believe what it says about causing abnormal intestinal growths in rats and mice. Also the effects of skin contact, irritation of mucus membranes, irritation of eyes.
Now Powdered Milk is fed to our babies and children. What do you think is more dangerous, CCA or Powdered milk?
We don't force feed CCA to our young, do we?
Every one knows thet the APVMA is loaded with anti-everything types. They are spindoctors just like every other public funded entity that must produce publishable crapola to justify their future funding. They couldn't give 2 knobs of Goat schit about it actually being factual. So long as the Sheeple believe their hype, they will continue to spin away.
As for Powder Milk hate the stuff haven't had it since I was no sorry since my kids were babies one drink and I through the shyte out.
Just hope Echnidna has the time to read it.:D
I can think of some we should have.:roll:Quote:
We don't force feed CCA to our young, do we?
I agreeQuote:
Originally Posted by
I hope you dont mind if i chime in with my two cents. I have a degree in Biochemistry and although i am certainly not an expert (cos i ditched biochem for engineering) i do have some knowledge.
On the subject of arsenic and its affects on humans. You have to understand that arsenic can be toxic but only incertain activated forms. The arsenic in seafood is actually contained in the chiton (hard shell) in a form that is not dangerous to humans.. that means we can eat as much as we like and not get sick from it.
its kind of like iron.. we need it to live. Iron is essential for oxygen transportation around the body... an iron ION is present in heamoglobin (in red blood cells) which is what transports the oxygen... we can only absorb iron in its IONIC form.. we can not absord it when its in it ELEMENTAL form.. in other words if you want iron in your diet have a guiness and a big steak and you'll be right.. do not chew your chisel.. it will only break your teeth.
It is the same with arsenic.. in one form its dangerous. In another it isnt. Drawing analogies between a chemical and seafood is not a smart thing to do.. it can confuse people.
Having said that.. i would still wear protective gear when usig treated pine.. id wear protective gear when using any wood.. the saw dust is nasty stuff.
and finally.. onthe subject of MSDS's.. During my chemistry days i was always taught to treat them with a grain of salt... Inflamation of this or irritation of that is all too common on those things and you have to realise that although there are some very nasty chemicals out there, alot of the time the safety issue is about quantity or concentration. I mean pure oxygen actually makes us go crazy.. but we need it to live. I remember looking at the MSDS for vinegar and it scared teh living day lights out of me until i realised what it was refering to...
Anyway.. I hope this helps
Cheers
joe
Thank you for that link WheelinQuote:
Originally Posted by wheelinround
This information came from that link
However, based on a consideration of the exposure to CCA-treatment timber products, in particular children's play equipment, there was no compelling evidence from the available data to conclude that there was likely to be an unacceptable risk to public health from exposure to arsenic from CCA-treated timber. Based on this finding, there would not seem to be any good justification for taking immediate action to remove existing CCA-treated playground structures.
which just reinforces my conclusion that a safe and sound product was assassinated as a result of a reported hoax from Brazil/
Quote:
Originally Posted by echnidna
Absolutely.. pushed along by hippy dippy do gooders that don't have the knowledge to make an informed decision but do have the political clout to influence policy makers like Croyden Conservation Society in Victoria...that have suddenly disappeared off the web since the ban ....funny that.
Also this mob
http://www.baddevelopers.green.net.a...oxictimber.htm
Note how they don't have a tab titled "about us" just a anonymous site expounding unproven, personal attacks on who ever they take a dislike to and reproducing supposedly scientific articles without valid references to the authors credibility or scientific credentials or that of the original published source. :no:
And for those that don't know me I'm very much a greenie - I just hate being fed bull****, by idiot extremists.
:rantoff:
ftje -
Anyway.. I hope this helps
Cheers
joe
Yes your comments were helpful.
CP
The Croydon Conservation Society never disappeared off the web it's still there, always has been, you just didn't check properly. In fact if you take some time to inform yourself about the problems with CCA treated timber you may get to understand the dangers. There are a number of articles spelling out the problems, all referenced and using substantiated scientific data. www.croydonconservation.org.auQuote:
Originally Posted by Bleedin Thumb
There never was a hoax from Brazil, which I have seen mentioned in some of the posts. That one probably came from the CCA treatment industry to deflect from the real problem about arsenic, chromium and copper leaching from the timber, in amounts that have been considered to be a danger to children by the governments of the U.S., European Union and Australia, to name but a few. This is what they had to say:
The European Union:
(3) The risk assessment was referred to the Scientific Committee on Toxicity, Ecotoxicity and the Environment (CSTEE) for peer review and the CSTEE concluded that the main risks had been identified correctly. These risks included those to human health from the disposal of wood treated with wood preservatives containing copper, chrome and arsenic (CCA) and in particular risks to children’s’ health from the use of CCA treated wood in playground equipment. A risk to the aquatic environment in certain marine waters was also identified.
(4) The CSTEE further advised that in the light of a serious knowledge gap in relation to arsenic-treated wood in landfills it would be advisable to exercise caution by limiting the use of arsenic-based wood preservation to those situations where it is absolutely necessary.
(5) In a further consideration of the health effects of arsenic the CSTEE has concluded that the substance is both genotoxic and a well-known carcinogen, and that it may be appropriate to consider that no threshold exists for carcinogenic effect.
The U.S.
The United States Consumer Product Safety Commission (CPSC) recently concluded that arsenic in CCA treated timber poses an unacceptable risk to humans, particularly children:
“Based on the assumptions used in the staff’s risk assessment, the CPSC technical staff concluded that a young child who plays on CCA treated wood playground structures in early childhood has an increased risk of 2 to 100 per million of developing lung or bladder cancer during his or her lifetime. This is an increased risk above the risk of cancer due to other factors during one’s lifetime. Staff believes that increased risk exists despite the age of the wood and whether it has been manufactured specifically for playgrounds.”
You see the problem was that no-one in Australia bothered to check whether or not this toxic time bomb was actually leaching arsenic. It was never meant for children's playgrounds or furniture or decking that children crawled on. It wasn't until your so-called ' hippy dippy do gooders' from the Croydon Conservation Society decided to do some testing that the leaching was discovered in amounts that shocked the regulators into doing something about it, namely banning it for use where children come into contact with it. The N.Z. government only carried out a literature review, they never did any testing either.
And if you're still not convinced watch SBS tomorrow night at 7.30, Is your house killing you?
Stop shooting the messenger, you may learn something.
You need to do a bit more research on the subject as there is loads of scientific evidence that says it is not safe. Have a look at http://ro.uow.edu.au/artspapers/41/ and then tell me why you think it is safe.Quote:
Originally Posted by echnidna
To all the doubters out there. Have a read of this and then tell me why you think it is safe. http://ro.uow.edu.au/artspapers/41/
And please don't write unsubstantiated and unsupported stuff like "I don't think it is.There doesn't appear to be any scientific evidence to substantiate any safety hazerds." or "Their words were that a horse would have to eat a 5' post 6" in diameter a day for the next 15 years to get sick." or "How many kids have you heard dropping dead while playing in the playground from Arsenic poisoning? None?"
So how many people have you heard dropping dead from smoking a cigarette? None? Does that mean it's OK and won't eventually cause some disease or other related problems? What about asbestos, how many people have you heard dropping dead from breathing in asbestos? None? Your reasoning is absurd.
A single 3.6m 150x50 board contains about 27 grams of arsenic - enough arsenic to kill more than 200 adults. A tablespoon (about 20 grams) of CCA wood ash has enough arsenic to kill an adult human.There is an abundance of scientific evidence to say it isn't safe otherwise the U.S. government wouldn't have withdrawn it from ALL domestic situations including garden fences, garden stakes and retaining walls. There are restrictions on CCA use in the US, the European Union, Canada and Japan, and it has been banned altogether in several countries including Denmark, Switzerland, Vietnam and Indonesia. Hardly an indictment on the safety of CCA timber. Where are the health studies on the combined health impacts of copper, chromium and arsenic that leaches from this timber? According to the World Health Organisation and the US Environmental Protection Agency arsenic is ‘a known carcinogen and is acutely toxic’. Chromium isn't much better.
The Australian Workers’ Union (AWU) banned certain methods of usage of construction materials treated with copper chrome arsenate due to the material’s capability for releasing arsenic and ‘therefore exposing workers to unacceptable risks’. The US EPA's Incident Data System contains reports of injury from CCA-treated timber, listing incidents of ‘itching, burning, rashes, neurological symptoms, and breathing problems after handling lumber; damage to nerves in feet and legs from CCA sawdust and fumes from construction; chronic rash; eye swelling from dust; headache, nausea, shakiness, and thirst from cutting timber; rashes on arms from dust; nausea and headache from drilling timber’ It is advised to wear gloves while handling the timber, so does that include the children as well?
Ultraviolet exposure increases the amount of arsenic removed through rainfall by five times. The UV levels in Australia are very high in the summer months, just when children are more likely to be playing on CCA play equipment. Weathered wood leaches more of the toxic trivalent arsenic than unweathered wood, in other words the older it is the worse it gets. This is not the 'naturally occurring arsenic found in prawns' that industry likes to quote.
Governments do not remove toxic chemicals from the marketplace without large amounts of supporting scientific evidence of harm or potential harm. The Croydon Conservation Society is a grass roots organisation funded by its members, and campaigns for a better world for our children. We have no vested interest in the treated timber industry or alternative timbers, we only want safe play spaces for our children. We have been in existence since 1964, (and for 'Bleedin' thumb our website is still there, always has been, hasn't disappeared as you so mockingly write), check it out www.croydonconservation.org.au. We are humbled to think that you believe we have so much influence with the Federal government ('political clout to influence policy makers') If only it were that simple!