Abstract:
:This paper reports results from a field trial with a breath-alcohol screening device--Alcolmeter pocket model. Breath tests were made with drivers apprehended during routine controls (road-blocks), for traffic violations and those involved in traffic accidents. Of 908 roadside breath tests made with chemical reagent tubes, 343 showed zero alcohol (no colour change) and these results were confirmed by Alcolmeter. Alcohol was detected in 191 tests but the level was judged as being below the legal limit of 0.50 mg/ml. The Alcolmeter results, however, ranged from 0 to 1.22 mg/ml (mean 0.21 mg/ml) and 15 individuals (7.8%) were above the legal limit. There were 373 positive chemical tube breath screening tests whereas in 5 cases (1.3%) Alcolmeter indicated a blood-alcohol level below 0.50 mg/ml. Duplicate determinations with the Alcolmeter device were highly correlated r = 0.93 +/- 0.02 (+/- S.E.), P less than 0.001. The standard deviation of a single breath-alcohol analysis under field conditions was +/- 0.10 mg/ml which corresponds to a coefficient of variation of 10%. The time interval between positive roadside breath test and blood-sampling ranged from 5 to 220 min (median 62 min). The results were therefore adjusted by 0.15 mg/ml per hour to compensate for ethanol metabolised between the time of sampling blood and breath. The corrected blood and breath values were well correlated r = 0.84 +/- 0.03, P less than 0.001 but the predictive power of the regression relationship was poor. The regression equation was y = 0.27 +/- 0.65x and the standard error estimate was +/- 0.21 mg/ml at the mean concentration of ethanol of 1.0 mg/ml.
journal_name
Forensic Sci Intjournal_title
Forensic science internationalauthors
Jones AWdoi
10.1016/0379-0738(85)90126-4subject
Has Abstractpub_date
1985-08-01 00:00:00pages
157-65issue
3-4eissn
0379-0738issn
1872-6283pii
0379-0738(85)90126-4journal_volume
28pub_type
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journal_title:Forensic science international
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journal_title:Forensic science international
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pub_type: 杂志文章
doi:10.1016/j.forsciint.2006.06.023
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journal_title:Forensic science international
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pub_type: 杂志文章
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journal_title:Forensic science international
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journal_title:Forensic science international
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journal_title:Forensic science international
pub_type: 杂志文章,评审
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journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/0379-0738(87)90105-8
更新日期:1987-04-01 00:00:00
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journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/j.forsciint.2008.10.008
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journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/j.forsciint.2009.01.021
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journal_title:Forensic science international
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journal_title:Forensic science international
pub_type: 杂志文章
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journal_title:Forensic science international
pub_type: 杂志文章
doi:10.1016/j.forsciint.2012.03.028
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journal_title:Forensic science international
pub_type: 杂志文章,评审
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