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26-04.-2004, 07:25 PM
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#1 |
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Guest
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ABC News Item (Sydney)
Some sort of study where various commuters wore fume monitors while travelling
to work. Walking and cycling 1/2 the fume-intake of motorists... Train travellers least... Car occupants most... Hmmm... |
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27-04.-2004, 06:21 AM
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#2 |
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Re: ABC News Item (Sydney)
Dude wrote:
> Some sort of study where various commuters wore fume monitors while > travelling to work. > Walking and cycling 1/2 the fume-intake of motorists... > Train travellers least... > Car occupants most... > Hmmm... excellent! there was something done recently in the UK, according to my C+ mags -- |
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27-04.-2004, 01:18 PM
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#3 |
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Re: ABC News Item (Sydney)
Although, I read somewhere a few years back, that cyclists and runners
absorb more lead because of the salt in their sweat. Not so much a problem these days with lead no longer in fuel, but those of us who started cycling years before unleaded and lead-replacement fuels were heard of in Oz are probably as mad as hatters ;-) dude wrote: > Some sort of study where various commuters wore fume monitors while travelling > to work. > Walking and cycling 1/2 the fume-intake of motorists... > Train travellers least... > Car occupants most... > Hmmm... |
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27-04.-2004, 01:31 PM
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#4 |
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Re: ABC News Item (Sydney)
"Steve Jay" <steve.jay@iprimus.com.au> wrote in message news:979ecddbafe0a97790a4d6485abd434a$1@www.izzythedog.com... > Although, I read somewhere a few years back, that cyclists and runners > absorb more lead because of the salt in their sweat. Not so much a problem > these days with lead no longer in fuel, but those of us who started > cycling years before unleaded and lead-replacement fuels were heard of in > Oz are probably as mad as hatters ;-) Why would you absorb more lead because of the salt in your sweat? Marty |
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27-04.-2004, 01:54 PM
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#5 |
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Re: ABC News Item (Sydney)
Marty Wallace wrote:
> Why would you absorb more lead because of the salt in your sweat? Sweating open pores and exudes a salty liquid which takes up lead in the air faster. ? From what little I remember salt = NaCl = Na+ & Cl- to attack lead-whatsit. body salts are more diverse with loats of other chenical involved. |
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27-04.-2004, 02:21 PM
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#6 |
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Re: ABC News Item (Sydney)
Steve Jay wrote:
> ...but those of us who started cycling years before unleaded and lead- > replacement fuels were heard of in Oz are probably as mad as hatters ;-) werent Hatters mad due to arsenic or something like that? -- |
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27-04.-2004, 02:42 PM
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#7 |
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Re: ABC News Item (Sydney)
flyingdutch wrote:
> werent Hatters mad due to arsenic or something like that? Mercury compounds. John Retchford -- |
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27-04.-2004, 03:49 PM
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#8 |
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Re: ABC News Item (Sydney)
"flyingdutch" wrote:
> werent Hatters mad due to arsenic or something like that? That was mercury. Interestingly, arsenic was taken in small doses by mountaineers to improve endurance. I think they'd use other substances these days. John |
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27-04.-2004, 03:55 PM
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#9 |
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Re: ABC News Item (Sydney)
"dude" wrote:
> Some sort of study where various commuters wore fume monitors > while travelling to work. > > Walking and cycling 1/2 the fume-intake of motorists... > > Train travellers least... > > Car occupants most... I wonder if these figures took into account the exercise-induced increase in airflow through the lungs of cyclists. This could make a hell of a difference.. John |
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27-04.-2004, 05:03 PM
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#10 |
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Re: ABC News Item (Sydney)
: I wonder if these figures took into account the exercise-induced
: increase in airflow through the lungs of cyclists. This could : make a hell of a difference.. I wondered that, too. I already consciously try not to work hard when I'm in polluted areas (because I just don't know what else to do). |
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27-04.-2004, 05:21 PM
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#11 |
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Re: ABC News Item (Sydney)
John Henderson wrote:
....snip.... > I wonder if these figures took into account the exercise-induced > increase in airflow through the lungs of cyclists. This could > make a hell of a difference.. Are car exhaust fumes more concentrated closer to the ground. If so, car air conditioning would pick up more that a bicyclist higher up. that might be one factor. I think another factor for car drivers was internal fumes, e.g. plastiscisers (sp) exuded from fittings during the day in the sun lit car park. Then car driver enters their sealed world and breathes in this concentration. > > John -- Terry Collins {:-)}}} email: terryc at woa.com.au www: http://www.woa.com.au Wombat Outdoor Adventures <Bicycles, Computers, GIS, Printing, Publishing> "People without trees are like fish without clean water" |
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27-04.-2004, 06:42 PM
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#12 |
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Re: [OT] Hatters (was: ABC News Item (Sydney))
John Retchford wrote:
> flyingdutch wrote: > > werent Hatters mad due to arsenic or something like that? > > Mercury compounds. > > John Retchford What did hatters (milliners?) use mercury compounds for? &roo |
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27-04.-2004, 07:38 PM
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#13 |
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Re: [OT] Hatters (was: ABC News Item (Sydney))
Andrew Swan wrote:
> What did hatters (milliners?) use mercury compounds for? setting the felt. |
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27-04.-2004, 07:42 PM
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#14 |
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Re: ABC News Item (Sydney)
Been attempting to track down the original article, the closest match, so far:
27/04/04 - from SHM Los Angeles sprawl risk for Sydney <http://www.smh.com.au/articles/2004/04/26/1082831499675.html> any better? -- |
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27-04.-2004, 09:43 PM
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#15 |
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Re: [OT] Hatters (was: ABC News Item (Sydney))
"Terry Collins" <terryc@woa.com.au> wrote in message news:408E2A05.211B1B11@woa.com.au... > Andrew Swan wrote: > > > What did hatters (milliners?) use mercury compounds for? > > setting the felt. The chemicals used in hat-making included mercurous nitrate, used in curing felt. Prolonged exposure to the mercury vapors caused mercury poisoning. Victims developed severe and uncontrollable muscular tremors and twitching limbs, called "hatter's shakes"; other symptoms included distorted vision and confused speech. Advanced cases developed hallucinations and other psychotic symptoms. The popular top hat of the time were made from beaver fur, but cheaper ones used furs such as rabbit instead. A complicated set of processes was needed to turn the fur into a finished hat. With the cheaper sorts of fur, one step was to brush a solution of mercurous nitrate on to the fur to roughen the fibres and make them mat more easily, a process called carroting because it made the fur turn orange. Beaver fur had natural serrated edges that made this unnecessary, one reason why it was preferred, but the cost and scarcity of beaver meant that other furs had to be used. Whatever the source of the fur, the fibres were then shaved off the skin and turned into felt; this was later immersed in a boiling acid solution to thicken and harden it. The acid treatment decomposed the mercurous nitrate to elemental mercury. Finishing processes included steaming the hat to shape and ironing it. In all these steps, hatters working in poorly ventilated workshops would breathe in mercury vapor. From http://www.hgtech.com/Information/Mad%20Hatter.htm Marty |
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