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Assessing Ultrafine Particles Exposure in Electronic Cigarette Vape Shops.

机译：在电子烟Vape商店中评估超细颗粒的暴露。

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摘要

Introduction: Vape shops have grown in popularity among adults and youth. The increased popularity of electronic cigarettes has triggered many new businesses to open within the last three years to sell electronic cigarettes devices, flavor liquids and provide a place for lounging. High levels of ultrafine particles (UFP) are generated when active vaping is occurring.;Objectives: 1. Quantify and understand the spatial distribution of ultrafine particles in vape shops. 2. Identify factors that generate elevated levels of ultrafine particle concentrations.;Methods: Two vape shops in Southern California were recruited to participate in the study. There were six testing days for vape shop A and four testing days for vape shop B. Ultrafine particles were collected using two TSI Condensation Particle Counters. Carbon dioxide, relative humidity and temperature were also measured using a TSI Q-Trak Plus. CPC A was placed in a high activity area and was kept there for subsequent sessions. CPC B rotated around the store and outside. The Q-Trak was placed with CPC A during the sampling sessions. The air exchange rate (AER) was calculated using one overnight CO2 trend data using the TSI Q-trak.;Results: A temporal profile of UFP showed that high spikes of UFP were observed during vaping. The CPC placed in a low activity area, showed similar up and down fluctuations of UFP as shown in CPC A, even when no activity was occurring near the instrument. The UFP increased significantly when 1-2 and 3+ individuals were vaping compared to when no vaping was occurring. The UFP differed significantly (P<0.001) in both vape shops even when averaging the UFP concentration when zero, 1-2 and 3+ people were smoking. This is likely due to differences in the ventilation of the shops. The AER for Vape Shop A was 3.8hour-1 and for Vape Shop B is 4.8hour-1. The indoor-outdoor ratio is 10:1 and 1.4:1 for Vape Shop A and Vape Shop B respectively. The data also showed when CO2 levels are increased the UFP levels also increased.;Conclusions: This research shows that e-cigarettes are a major source of UFP in the vape shops. Also, higher levels of UFP is seen when 1-2 and 3+ individuals are smoking and the indoor UFP levels are significantly reduced in the more ventilated shop.
机译：简介：Vape商店在成年人和年轻人中越来越受欢迎。电子烟的日益普及促使最近三年内许多新企业开业，以销售电子烟设备，调味液并提供闲逛的场所。主动汽化发生时会生成大量的超细颗粒（UFP）。；目标：1.量化并了解vape商店中超细颗粒的空间分布。 2.确定导致超细颗粒浓度升高的因素。方法：在南加州招募了两家vape商店参加这项研究。 vape车间A的测试时间为6天，vape车间B的测试时间为4天。使用两个TSI冷凝颗粒计数器收集超细颗粒。还使用TSI Q-Trak Plus测量了二氧化碳，相对湿度和温度。 CPC A放置在活动频繁的区域，并保留在那里以备以后使用。 CPC B围绕商店和外部旋转。在抽样会议期间，将Q-Trak与CPC A一起放置。使用TSI Q-trak使用一整夜的CO2趋势数据计算空气交换率（AER）。结果：UFP的时间分布表明，在雾化过程中观察到了UFP的高峰值。即使在仪器附近没有任何活动的情况下，放置在低活动区域的CPC也显示出与CPC A相似的UFP上下波动。与没有发生雾气时相比，当1-2和3+个人进行雾气时，UFP显着增加。即使在零，1-2和3+人吸烟时对UFP浓度进行平均，这两个vape商店中的UFP也有显着差异（P <0.001）。这可能是由于商店通风状况的差异所致。 Vape商店A的AER为3.8hour-1，Vape商店B的AER为4.8hour-1。 Vape商店A和Vape商店B的室内外比例分别为10：1和1.4：1。数据还显示，当CO2水平升高时，UFP水平也会升高。结论：这项研究表明，电子烟是vape商店中UFP的主要来源。此外，当1-2和3+个人吸烟时，可以看到较高的UFP水平，在通风比较好的商店中，室内UFP水平明显降低。

著录项

  • 作者

    Sen, Chanbopha.;

  • 作者单位

    University of California, Los Angeles.;

  • 授予单位 University of California, Los Angeles.;
  • 学科 Environmental health.
  • 学位 M.S.
  • 年度 2016
  • 页码 30 p.
  • 总页数 30
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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