Study - No Lung Cancer From Exposure to New Technology Diesel Engine Exhaust

chucky2

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It won't matter to CARB. It's too bad they didn't simultaneously perform the same study but with DI gasoline exhaust though, that'd have been interesting...
 

wxman

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It won't matter to CARB. It's too bad they didn't simultaneously perform the same study but with DI gasoline exhaust though, that'd have been interesting...
IARC (WHO) commented in 1989...


...The Working Group noted that the nonlead particulate concentration [of gasoline engine exhaust] was less than 1/20 the lowest level of particulates that produced an excess of lung tumours in the studies of diesel exhaust. The highest levels of gasoline engine exhaust that can be tested are limited by the toxicity of carbon monoxide....
International Agency for Research on Cancer. 1989. “Diesel and gasoline engine exhausts and some nitroarenes.” IARC. Vol. 46: 88-185, Appendix A-2…Epidemiology studies of carcinogenicity to humans.


I suspect the same would be true of DI gassers that acute CO poisoning would preclude reaching PM levels approaching the levels that diesel have been tested at, even though PM from GDI is typically higher than PFI.
 

chucky2

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In '89 would they have been making that comparison to 2007 Clean Diesel and DI gas, rather than traditional gas? Also ultrafine was covered by that?
 

wxman

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No, and you have a good point, it would be good to see what the health effects of GDI exhaust are even if CO is the limiting factor (NO2 is actually the limiting factor in the subject diesel exhaust study).
 
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TDIMeister

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Mandate particulate filters for everything for transportation or power generation burning anything. :rock:
 

TDIMeister

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In fairness, fired power plants should have particulate filters too.
 

TDIfreak

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Every wood burning fireplace in urban area should have particle filters.
 

wxman

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Agree with the previous points.

Since diesel has been a relatively small contributor to the total PM inventory in U.S. urban areas (contrary to popular belief), it's time other sources of PM were more rigorously controlled....







These are graphical results of two independent studies conducted in two different U.S. cities (Denver and Washington, D.C.) These studies were conducted before DPF was effectively required on highway diesels.

Gasoline exhaust is actually a significantly larger source of ambient PM according to these studies, and the relative contribution between diesel and gasoline will become larger and larger as old TDE engines are replaced by NTDE engines and as GDI replaces PFI from the gasoline exhaust sources.
 

Powder Hound

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Seeing the above, it makes me wonder exactly how much their other models are fubar-ed. Not if, but by how much. Particularly their global warming models.

Cheers,

PH
 

Lug_Nut

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IARC (WHO) said:
"....produced an excess of lung tumours..."
"Excess"? The implication being that there is some satisfactory number of lung tumors that should be produced?
What will we do when the particulate filter usage produces a shortage of lung tumors?
 

GoFaster

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"Excess"? The implication being that there is some satisfactory number of lung tumors that should be produced?
What will we do when the particulate filter usage produces a shortage of lung tumors?
Not "satisfactory", but "normal".

Excess in this case means "more than statistical background from other causes".

Still have particulates in the environment from forest fires, volcanoes, etc and there is nothing we can do about that.

As long as we have motor vehicles on the road, there are going to be particulates from brake pads, tires, and dust on the road.

Life on earth would die if there were NO particulates in the air ... they are nucleation sites for formation of raindrops.

Then there's tobacco smoking ...
 

777

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I was pulling a car into my familys shop the other day and it was running while I hooked up the exhaust fan too it and a mechanic in the next bay complained about the fumes.....with a cigarette hanging out of his mouth:rolleyes:
 
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