Practical use of commercially available compressed (dry gas) alcohol standards

M. Rosland, Jacqueline Montpetit, V. Mendes
{"title":"Practical use of commercially available compressed (dry gas) alcohol standards","authors":"M. Rosland, Jacqueline Montpetit, V. Mendes","doi":"10.1080/00085030.2017.1379245","DOIUrl":null,"url":null,"abstract":"ABSTRACT Approved Instruments for Breath Testing in Canada require the use of alcohol standards to ensure that they are in proper working order at the time of testing. Newer generation breath testing instruments allow for the use of Dry Gas (ethanol and nitrogen in compressed gas tanks) as the alcohol standard. Three areas were evaluated: (1) consistency of alcohol readings over time as the gas tank depletes; (2) altitude compensation in the Intox EC/IR II and Datamaster-DMT at two different elevations; and (3) the effect of exposing the dry gas tanks to weather conditions that could be encountered during shipping or storage. The results demonstrated that (1) the concentration of alcohol was found to remain stable as the tank emptied; (2) both instruments correctly compensated for the change in atmospheric pressure due to elevation change; and (3) when dry gas tanks from different manufacturers were subjected to −20°C for 48 hours, some tanks were found to have decreased pressure and an increase in alcohol concentration. Some tanks exposed to freezing temperatures for an extended period may not produce the appropriate reading and as such precautions should be taken when shipping or storing dry gas tanks in cold temperatures.","PeriodicalId":44383,"journal":{"name":"Canadian Society of Forensic Science Journal","volume":"50 1","pages":"197 - 207"},"PeriodicalIF":0.2000,"publicationDate":"2017-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00085030.2017.1379245","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Society of Forensic Science Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/00085030.2017.1379245","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MEDICINE, LEGAL","Score":null,"Total":0}
引用次数: 0

Abstract

ABSTRACT Approved Instruments for Breath Testing in Canada require the use of alcohol standards to ensure that they are in proper working order at the time of testing. Newer generation breath testing instruments allow for the use of Dry Gas (ethanol and nitrogen in compressed gas tanks) as the alcohol standard. Three areas were evaluated: (1) consistency of alcohol readings over time as the gas tank depletes; (2) altitude compensation in the Intox EC/IR II and Datamaster-DMT at two different elevations; and (3) the effect of exposing the dry gas tanks to weather conditions that could be encountered during shipping or storage. The results demonstrated that (1) the concentration of alcohol was found to remain stable as the tank emptied; (2) both instruments correctly compensated for the change in atmospheric pressure due to elevation change; and (3) when dry gas tanks from different manufacturers were subjected to −20°C for 48 hours, some tanks were found to have decreased pressure and an increase in alcohol concentration. Some tanks exposed to freezing temperatures for an extended period may not produce the appropriate reading and as such precautions should be taken when shipping or storing dry gas tanks in cold temperatures.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
实际使用市售的压缩(干气体)酒精标准
摘要:加拿大批准的呼吸测试仪器要求使用酒精标准,以确保它们在测试时处于正确的工作状态。新一代呼吸测试仪器允许使用干气(压缩气罐中的乙醇和氮气)作为酒精标准。评估了三个方面:(1)随着储气罐的耗尽,酒精读数随时间的一致性;(2) Intox EC/IR II和Datamaster DMT在两个不同高度的高度补偿;以及(3)将干气罐暴露在运输或储存过程中可能遇到的天气条件下的影响。结果表明:(1)随着罐的排空,醇的浓度保持稳定;(2) 两种仪器都正确地补偿了由于海拔变化引起的大气压力变化;和(3)当来自不同制造商的干气罐在−20°C下放置48小时时,发现一些气罐的压力降低,酒精浓度增加。一些长期暴露在冷冻温度下的储罐可能不会产生适当的读数,因此,在低温下运输或储存干气罐时应采取预防措施。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
1.00
自引率
0.00%
发文量
21
期刊最新文献
Possible dependence of sternum non-metric features on sex, age, and stature from a forensic viewpoint: a study in an Iranian population Background and persistence of fibers on vehicle seat belts A fatal motor vehicle collision involving multiple novel psychoactive substances Intra- and inter-rater reliability of a manual codification system for footwear impressions: first lessons learned from the development of a footwear database for forensic intelligence purposes Individual age estimation using pulp-to-tooth area ratio in single-rooted teeth
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1