Another study yet again - this time a slightly different twist

[Impulso]

Metal concentrations found in the aerosols. Wonder whether these were temp controlled or they used a bunch of extremely high wattage vaping to get these numbers.

Environmental Health Perspectives – Metal Concentrations in e-Cigarette Liquid and Aerosol Samples: The Contribution of Metallic Coils

Researchers really need to get the terminology correct and layout the exact parameters used. They can’t be lambasting halfassed studies.


Sent from my iPhone using Tapatalk

 

[bombastinator]

We knew that metal flakes Ni was a potential issue. It’s why you can’t dry burn Ti. What confuses me is where the lead came from. There shouldn’t BE any lead. Period. The Ni would be easy as would the Cr. Just dry burn nichrome wire.

 

[BoogaWu]

Most of the alloy charts for metals have a like .1% category for other metals, even for stuff like blade steels and precious metals. I haven't had time to go through the whole paper, but there is lead in everything, even tap water.

 

[ScottP]

So a couple of points of interest. First the only wire material they state to have tested was Kanthal, so this may not even apply to other types, especially SS. Second they noticed higher concentrations with MORE frequent coil changes. This is opposite of everything we have been thinking thus far, with us previously thinking that cleaning and reusing a coil is worse than replacing it. It seems the opposite is in fact true. I would like to see them repeat the test using SS316L. If it is leeching anywhere near as bad, then we need to seriously need to rethink our cookware.

 

[Rossum]

First the only wire material they state to have tested was Kanthal

This wasn't a study of any particular coil material(s). The researchers recruited vapers and had them bring in their devices and e-liquid. They asked the participants what their coils were made of. Some answered Kanthal while others stated they didn't know. Thus it seems likely that a substantial number of participants were using pre-built coil assemblies. Given the origin of virtually all such pre-built assemblies, I'm not terribly surprised that unexpected metals were found...