Al-Jazeera America published a post on their blog about e-cigarettes. The article was unfortunately a little on the lazy side, but that's not the story here. The story is actually about one of the people they interviewed for the piece, a researcher who got an FDA grant to study cardiovascular effects of e-cigarettes. In particular the concept of particles.
7 things you need to know about electronic cigarettesSchick is running an FDA-funded study on how e-cigarettes affect the cardiovascular system. She uses a laser photometer to measure the mass of particles that are in the vapor emitted by e-cigarettes.
“The reason I care about particles is that breathing particles causes cardiovascular disease, causes people to die of heart attacks, plain and simple,” says Schick.
Dilworth got a first-hand look at the particles in e-cig smoke, when the vapor from the patrons and booths triggered the smoke detectors at the convention center in Anaheim.
“If it is just water vapor, why did it set off the fire alarm?” she asks.
Well, probably because like most large commercial buildings the convention center likely uses optical smoke detectors instead of the ones you typically find in homes which detect particulate matter. In addition, it's been pointed out that not all particles are of concern, but I barely understand that one myself so I'll let it go. Don't worry, I have another one, according to this post Schick is studying “third-hand” vapor too.