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Gutachten zu e-Zigaretten oder Inhaltsstoffen der Liquids

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23548207
"Dilute & shoot" approach for rapid determination of trace amounts of nicotine in zero-level e-liquids by reversed phase liquid chromatography and hydrophilic interactions liquid chromatography coupled with tandem mass spectrometry-electrospray ionization.

Beschreibung:

Two analytical procedures are proposed where HILIC and RPLC techniques are coupled with tandem mass spectrometry detection for rapid determination of trace amounts of nicotine in zero-level liquids for electronic cigarettes. Samples are prepared on the basis of the approach "dilute & shoot" which makes this important step quick and not complicated. The chromatographic separation was carried out on a Zorbax XDB column (RPLC method) and Ascentis Si column (HILIC mode). Within-run precisions (CVs) measured at three concentration levels were as follows: 0.73%, 0.98% and 1.44% for RPLC method and 1.39%, 1.44% and 0.57% (HILIC mode). Between-run CVs were as follows: 1.94%, 1.02% and 1.22% for RPLC mode and 1.49%, 1.20% and 1.22% for HILIC mode. The detection limits of RPLC and HILIC modes were 4.08 and 3.90 ng/mL respectively. The proposed procedures are rapid, not complicated, sensitive and are suitable for fast determination of trace amounts of nicotine in zero-level liquids for electronic cigarettes.

Veröffentlicht in: Journal of chromatography. A

Veröffentlicht im: Apr 2013

23658395
Use of Electronic Cigarettes Among State Tobacco Cessation Quitline Callers.

Beschreibung:

INTRODUCTION: Little is known about the prevalence of electronic cigarette (e-cigarette) use among tobacco users who seek help from state tobacco quitlines, the reasons for its use, and whether e-cigarettes impact a user's ability to successfully quit tobacco. This study investigates these questions and describes differences among state quitline callers who used e-cigarettes for 1 month or more, used e-cigarettes for less than 1 month, or never tried e-cigarettes. METHODS: Data on e-cigarette use were collected from 2,758 callers to 6 state tobacco quitlines 7 months after they received intervention from the quitline program. RESULTS: Nearly one third (30.9%) of respondents reported ever using or trying e-cigarettes; most used for a short period of time (61.7% for less than 1 month). The most frequently reported reasons for use were to help quit other tobacco (51.3%) or to replace other tobacco (15.2%). Both e-cigarette user groups were significantly less likely to be tobacco abstinent at the 7-month survey compared with participants who had never tried e-cigarettes (30-day point prevalence quit rates: 21.7% and 16.6% vs. 31.3%, p < .001). Demographic differences between the 3 groups are discussed. CONCLUSIONS: This study offers a preliminary look at e-cigarette use among state quitline callers and is perhaps the first to describe e-cigarette use in a large group of tobacco users seeking treatment. The notable rates of e-cigarette use and use of e-cigarettes as cessation aids, even though the U.S. Food and Drug Administration has not approved e-cigarettes for this purpose, should inform policy and treatment discussions on this topic.

Veröffentlicht in: Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco

Veröffentlicht im: Apr 2013

23488521
Alternative tobacco product use and smoking cessation: a national study.

Beschreibung:

We investigated the frequency of alternative tobacco product use (loose leaf, moist snuff, snus, dissolvables, electronic cigarettes [e-cigarettes]) among smokers and the association with quit attempts and intentions.

Veröffentlicht in: American journal of public health

Veröffentlicht im: Apr 2013

23551515
'Vaping' profiles and preferences: an online survey of electronic cigarette users.

Beschreibung:

To characterize e-cigarette use, users and effects in a sample of Electronic Cigarette Company (TECC) and Totally Wicked E-Liquid (TWEL) users.

Veröffentlicht in: Addiction (Abingdon, England)

Veröffentlicht im: May 2013

23344557
Nicotine derived from the electronic cigarette improves time-based prospective memory in abstinent smokers.

Beschreibung:

It is well established that nicotine improves, and deprivation impairs, cognitive performance and mood in smokers. Prospective memory (PM), remembering to execute a delayed intention at a given time point, is under-explored in smokers. Whilst a handful of studies have shown improved PM with nicotine, the effects of nicotine delivered via the electronic cigarette (e-cigarette) have not been investigated.

Veröffentlicht in: Psychopharmacology

Veröffentlicht im: May 2013


   


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