Time Variation of Ammonia. Acetone, Isoprene and Ethanol in Breath: A Quantitative SIFT-MS Study over 30 Days.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F03%3A54030042" target="_blank" >RIV/61388955:_____/03:54030042 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Time Variation of Ammonia. Acetone, Isoprene and Ethanol in Breath: A Quantitative SIFT-MS Study over 30 Days.

Original language description

A study of the concentrations of the common breath metabolites ammonia, acetone, isoprene, ethanol and acetaldehyde in the breath of five subjects over a period of 30 days has been carried out. Breath samples were taken and analysed in the early morningon arrival at the laboratory. The real time analyses of three consecutive breath exhalations were carried out using selected ion flow tube mass spectrometry (SIFT-MS) on line to the instrument. Sufficient data were obtained to allow meaningful concentration distributions to be obtained for ammonia, acetone, isoprene and ethanol. These showed that the ammonia, acetone and isoprene concentrations exhibited sensibly normal distributions, with coefficients of variation of typically 0.3. Obvious and statistically significant (p < 0.01) differences are apparent in the mean concentrations of these metabolites between the five individuals. The acetaldehyde concentrations were relatively low and close to the instrument detection limit.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physiological Measurement

ISSN

0967-3334

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

N/A

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

107-119

UT code for WoS article

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EID of the result in the Scopus database

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