A practical and reliable method for measuring ethane and pentane in expired air from humans.

A practical and reliable method for measuring ethane and pentane in expired air from humans.
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一种实用可靠的方法,用于测量人体呼出气体中的乙烷和戊烷。

DOI:
10.1016/s0891-5849(99)00095-7
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发表时间:
1999
影响因子:
7.4
通讯作者:
F. Viteri
F. Viteri
中科院分区:
医学1区
文献类型:
--
作者:
M. Knutson;A. Lim;F. Viteri

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相似文献

我们描述了一种收集呼出空气的方法,并进一步记录了用于同时测量乙烷和戊烷的分析技术的性能。在收集前呼吸4分钟的无烃空气,有效地从肺部去除了高浓度的残留环境乙烷和戊烷,冲洗时间长达30分钟,导致呼吸烃没有进一步减少。平均(±SE)呼气率(pmol/kg b.wt./ 11名受试者的平均分为乙烷2.4 ± 0.6和戊烷1.5 ± 1.3。在至少6个不同的日期从4名受试者测量的呼气率的总个体内变异性(变异系数百分比,%CV),戊烷(44% CV)大于乙烷(29% CV)。分析变异性占总%CV的6%。该方法的优点进行了描述,并在文献中报道的值的大的变化的原因进行了讨论。
We describe a method for the collection of expired air and further document the performance of our analytical technique that is used to measure ethane and pentane simultaneously. Four minutes of breathing hydrocarbon-free air before collection effectively removed high concentrations of residual ambient ethane and pentane from the lungs, with washout times up to 30 min resulting in no further reductions in breath hydrocarbons. Mean (±SE) exhalation rates (pmol/kg b.wt./min) in 11 subjects were 2.4 ± 0.6 for ethane and 1.5 ± 1.3 for pentane. Total intraindividual variability in exhalation rates (as percent coefficient of variation, %CV), measured from 4 subjects on at least 6 different days, was greater for pentane (44% CV) than for ethane (29% CV). Analytical variability contributed 6% to the total %CV. Advantages of the method are described, and reasons for the large variability in values reported in the literature are discussed.
新生大鼠的脂质过氧化:禁食和高氧对呼出空气中乙烷和戊烷的影响。
DOI: 10.1159/000457292
发表时间: 1983
期刊: Developmental pharmacology and therapeutics
影响因子: --
作者:
Roberts,RJ;Rendak,I;Bucher,JR
通讯作者: Bucher,JR
使用呼吸戊烷测量来评估脂质过氧化的陷阱。
DOI: --
发表时间: 1994
影响因子: 6.5
作者:
Springfield,JR;Levitt,MD
通讯作者: Levitt,MD
乙烷呼出作为体内脂质过氧化的指标:从呼吸收集室浓缩乙烷。
DOI: 10.1016/0003-2697(82)90282-2
发表时间: 1982
影响因子: 2.9
作者:
Lawrence,GD;Cohen,G
通讯作者: Cohen,G