电子烟液体比率对重力度过器校正因子和实时测量的影响
Austin Close1, Jane Blackerby1, Heather Tunnell2
1Department of Public Health, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA.
概括
电子烟 (ECIG) 气溶测量需要特定的校正系数,这些校正系数与甘醇 (PG) 和植物甘油 (VG) 液体比率有所不同. 精确的颗粒物质 (PM) 评估需要了解这些PG/VG比对仪器读数的影响.
科学领域:
- 环境健康科学 环境健康科学
- 气溶科学与技术 气溶科学与技术
- 化学工程是化学工程的重要组成部分.
背景情况:
- 电子烟 (ECIG) 释放颗粒物 (PM),影响室内空气质量和人类健康.
- 具有不同基醇 (PG) 和植物甘油 (VG) 比例的ECIG液体会影响气溶的特性.
- 在ECIG气溶中精确测量颗粒物至关重要,但由于液体成分的变化而复杂.
研究的目的:
- 为了确定不同PG/VG比对气溶仪器校正因子对ECIG的影响.
- 评估PG/VG比如何影响使用各种气溶仪器测量颗粒物的准确性.
- 提供数据,以提高ECIG气溶测量在不同液体配方的精度.
主要方法:
- 在受控室中使用五种不同的PG/VG比率 (0/100,15/85,50/50,72/28,90/10) 产生ECIG气溶.
- 使用多个气溶仪器测量了PM1和PM2.5的校正因子:SMPS + APS,MiniWRAS,pDR和SidePak.
- 每个PG/VG比率的气溶尺寸分布和质量中位径的特征.
主要成果:
- 对于SMPS + APS,MiniWRAS,pDR和SidePak的PM2.5校正因子显示了PG/VG比率的变化.
- 对0/100,15/85,50/50和72/28PG/VG比率的校正因数对于SMPS + APS和MiniWRAS来说是相似的.
- 90PG/10VG比率呈现出更高的校正因数,可能是由于PG挥发性和传感器效应.
结论:
- 由于PG/VG比率的变化,标准校正因数可能不适用于ECIG气溶.
- 对于ECIG气溶,特别是高PG含量的气溶,需要特定的校正因数,以确保精确的颗粒物测量.
- 这项研究提供了必要的数据,以提高ECIG气溶监测和风险评估的可靠性.
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