this post was submitted on 18 Jul 2025
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They may look like travel shampoo bottles and smell like bubblegum, but after a few hundred puffs, some disposable, electronic cigarettes and vape pods release higher amounts of toxic metals than older e-cigarettes and traditional cigarettes, according to a study from the University of California, Davis. For example, one of the disposable e-cigarettes studied released more lead during a day’s use than nearly 20 packs of traditional cigarettes.

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[–] bathing_in_bismuth@sh.itjust.works 8 points 2 days ago (3 children)

What I don't get, PG/VG & nicotine + flavor chemicals. How the heck does lead get in there? Afaik its not used in synthesis of any of those things

[–] anarchy79@lemmy.world 2 points 1 day ago

Lead comes from the device hardware, not the juice. Heating coils, solder, and metal parts shed particles when hot.

[–] 3abas@lemmy.world 9 points 2 days ago (2 children)

The metal coil that needs to get red hot to vaporize the PG/VG.

[–] Revan343@lemmy.ca 8 points 2 days ago* (last edited 2 days ago) (1 children)

It's not from the coil, at least in the cases that this article is about, but other parts of the tank. Shitty manufacturing, anyways

[–] CmdrShepard49@sh.itjust.works 5 points 2 days ago (1 children)

Or just another shitty study like the one they did in Oregon where they fired the coils for 60 seconds at a time and literally melted the rigs down before measuring what chemicals off gassed from the smoldering pile of plastic and metal.

[–] anarchy79@lemmy.world 0 points 1 day ago (1 children)

Yeah no Chinese ever shoved cancer in the face of consumers for money! Let's trust capitalism on this one.

🙄

You're right China bad therefore junk science and our feelings is the only path to follow. 🙄

[–] tankfox@midwest.social 12 points 2 days ago (1 children)

If the coil is getting red hot it's not producing vapor anymore. Vapor is just boiled oil and the boiling happens at a lower temperature than red hot by a significant amount, and the whole system is configured that the incoming vape juice cools the coil in the process of becoming vapor. This study is about as significant as noticing that if you set the filter of a cigarette on fire it can produce extra-toxic chemicals. No shit, but that's not how they work.

More bullshit ads for plant based vaping alternatives; cigarettes.

[–] 3abas@lemmy.world 4 points 2 days ago (4 children)

I've wrapped enough coils to know they do in fact get red hot. Ask anybody who built coils how many times they've had to throw away a tank full because they ran it too fast and it burnt.

You trust the disposables to supply enough juice to keep the coil from every getting red hot? You trust the coil to be made of safer metals?

[–] tankfox@midwest.social 3 points 2 days ago (1 children)

I think you kinda made my point for me, once the cart has hit the temperature at which it releases those chemicals the cart is immediately ruined. This kind of goes to my 'if you burn the whole cigarette including the filter the net result is even more toxic'. I mean, sure, but that's really gross data manipulation.

[–] 3abas@lemmy.world 1 points 1 day ago

The ruined coil is if you run it too hot for too long... You're being naive if you think it never runs a little dry and the coils never get red hot.

If you have a tank that exposes the coil from the air hole, just look inside it and see how red it gets from a one second hit.

[–] SheeEttin@lemmy.zip 3 points 2 days ago (1 children)

So it doesn't need to get red hot? And in fact getting red hot is bad for it?

[–] YiddishMcSquidish@lemmy.today 3 points 2 days ago (1 children)

Yes and no. I used to build my own coils for my cloud machine. When you first build it, before putting in cotton you want to get it red hot once or twice. This serves a couple purposes. First it both expand and softens the metal so the loops are separated and the electricity has to go all the way around the individual coils. Second, it burns off whatever manufacturing residue that's left on the wire.

Once you have a wick and juice though, it boils drawing away heat and the coil shouldn't be getting red hot any more.

[–] TheRealKuni@lemmy.world 2 points 2 days ago (1 children)

Man, I miss that first fire of a fresh coil before you’ve wicked it, letting it get red-hot and then pressing it together to solidify the shape. Watching for shorts. On complicated windings it’s always so pretty.

Glad I don’t still consume nicotine, but there were parts of the process I loved.

[–] YiddishMcSquidish@lemmy.today 2 points 2 days ago

Yeah, it's meditative sometimes. I look forward to missing it.

[–] bathing_in_bismuth@sh.itjust.works 2 points 2 days ago (1 children)

Thank you, this is the angle I needed for my brains to get it.

My take; clogged watt-limited dispossible vape doesn't get enough airflow, burns the coil. Still not sure where the lead comes from but I get that might release metals. Thanks!

[–] Revan343@lemmy.ca 4 points 2 days ago (1 children)

Still not sure where the lead comes from

Countries with low manufacturing standards; historically one would assume China but that's not necessarily the case nowadays

[–] CmdrShepard49@sh.itjust.works 1 points 2 days ago

Why is a byproduct of 'regulations' that don't allow them to be manufactured in a place with reasonable safety standards. Its not too different than when the US poisoned the alcohol supply and killed or maimed a bunch of people. All they reported at the time was that alcohol/moonshine is dangerous but it was only because the government made it that way by design not something inherent to the product itself.

[–] CmdrShepard49@sh.itjust.works 1 points 2 days ago (1 children)

The coils don't burn it's the cotton that burns and causes dry hits and burnt flavor.

[–] 3abas@lemmy.world 1 points 1 day ago

You're splitting hairs. The coils get red hot on dry wick and it burns. The coils are overheating.

[–] SoftestSapphic@lemmy.world 2 points 2 days ago

It implies that the heavy metals from the electrical components leech into the e-juice