Second hand smoke e-cig compared to regular cigarette smoke

[Hammy]

Second-hand e-cig smoke compared to regular cigarette smoke -- ScienceDaily

 

[blademansw]

Source: USC. One of the primary nests of American ANTZ I believe.

The fact that they continually referred to "Second hand smoke" just shows the shoddy state of science and scientific reporting in general.

 

[Mawsley]

The fact that they continually referred to "Second hand smoke" just shows the shoddy state of science and scientific reporting in general.

This. Which is why I didnt bother reading it.

 

[nikki from mars]

Hmm... bit of an easy target this study... shows lower incidences pf carcinogens and most toxins in e cigarettes compared to smoking. .. some levels of some toxins. .. most lower couple slightly higher... studies conducted in offices etc not in labs... so not controlled environment... could be down to anything else... only excluding smoke does seem to lower most toxins... but any other effects could be environmental as environment is not accounted for and controlled. .. duh!

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[nikki from mars]

And their argument as to why they did the study this way is absolute bollocks as far as scientific method is concerned. ..

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[Diche]

I can't find a version of the original scientific paper on line that I can read without paying, but here is the abstract

In recent years, electronic cigarettes have gained increasing popularity as alternatives to normal (tobacco-containing) cigarettes. In the present study, particles generated by e-cigarettes and normal cigarettes have been analyzed and the degree of exposure to different chemical agents and their emission rates were quantified. Despite the 10-fold decrease in the total exposure to particulate elements in e-cigarettes compared to normal cigarettes, specific metals (e.g. Ni and Ag) still displayed a higher emission rate from e-cigarettes. Further analysis indicated that the contribution of e-liquid to the emission of these metals is rather minimal, implying that they likely originate from other components of the e-cigarette device or other indoor sources. Organic species had lower emission rates during e-cigarette consumption compared to normal cigarettes. Of particular note was the non-detectable emission of polycyclic aromatic hydrocarbons (PAHs) from e-cigarettes, while substantial emission of these species was observed from normal cigarettes. Overall, with the exception of Ni, Zn, and Ag, the consumption of e-cigarettes resulted in a remarkable decrease in secondhand exposure to all metals and organic compounds. Implementing quality control protocols on the manufacture of e-cigarettes would further minimize the emission of metals from these devices and improve their safety and associated health effects.

Particulate Metals and Organic Compounds from Electronic and Tobacco-containing Cigarettes: Comparison of Emission Rates and Secondhand Exposure - Environmental Science: Processes & Impacts (RSC Publishing)

Here is a PDF with the apendices which contains tables of information regarding the actual measurements taken and the results obtained, it is rather over my head but might be English to someone with a stronger science background than me.

http://www.rsc.org/suppdata/em/c4/c4em00415a/c4em00415a1.pdf

This is the product used in the tests

Ovale Elips-C(2 e-cigarettes) starter kit

 

[VaperCaper]

I agree with nikki, while their methodology is more 'realistic' is doesn't control for a lot of variables so rubbish in, rubbish out holds true.


this study needs replicating in a controlled environment at the very least, and also needs to control for the brand of e-cig used.

Why for example is the USC (University of Southern California) using a "European main brand" of cig-a-lke? why not a leading US brand?

Why don't they use several brands to contrast the manufacturing standards of several brands of e-cig as well as a control brand they produce in house?

All this study shows is that for this particular brand of e-cig they found elevated levels of some harmful chemicals when they made their measurements. (As well as obviously showing that there are no polycyclic aromotic hydrocarbons (smoke) as nothing is being burned.)

Variations of this experiment keep getting done as the anti crowd are desperate to find a study, any study, that shows vaping to be bad. They keep drawing blanks.

 

[knome]

Here is a PDF with the apendices which contains tables of information regarding the actual measurements taken and the results obtained, it is rather over my head but might be English to someone with a stronger science background than me.

http://www.rsc.org/suppdata/em/c4/c4em00415a/c4em00415a1.pdf

I'm not a scientist but where is Indoor Normal (no cigs or e-cigs)?

 

[Diche]

I'm not a scientist but where is Indoor Normal (no cigs or e-cigs)?

It is tricky without access to the full paper to judge their test methods, but there does seem to be a lack of a control sample which is bad science as nikki from mars stated.

 

[knome]

It is tricky without access to the full paper to judge their test methods, but there does seem to be a lack of a control sample which is bad science as @nikki from mars stated.

You make it sound like they had an agenda.