Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports UC Davis study: Disposable vapes may be more toxic than cigarettes What's really inside vapes? We pulled them apart to find out Vape Waste 2 A new study from UC Davis found that disposable vapes have much higher concentrations of heavy metals like lead and nickel than traditional cigarettes. CBS Evening News Facebook The potential dangers of disposable e cigarettes Poison Control