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Analysis of breath, exhaled via the mouth and nose, and the air in the oral cavity

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F08%3A00314989" target="_blank" >RIV/61388955:_____/08:00314989 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Analysis of breath, exhaled via the mouth and nose, and the air in the oral cavity

  • Original language description

    Analyses have been performed, using on-line selected ion flow tube mass spectrometry (SIFT-MS), of the breath of three healthy volunteers, as exhaled via the mouth and the nose and also of the air in the oral cavity during breath hold, each morning overa period of one month. Nine trace compounds have been quantified and concentration distributions have been constructed. Of these compounds, the levels of acetone, methanol and isoprene are the same in the mouth-exhaled and the nose-exhaled breath; hence,we deduce that these compounds are totally systemic. The levels of ammonia, ethanol and hydrogen cyanide are much lower in the nose-exhaled breath than in the mouth-exhaled breath and highest in the oral cavity, indicating that these compounds are largely generated in the mouth with little being released at the alveolar interface. Using the same ideas, both the low levels of propanol and acetaldehyde in mouth-exhaled breath appear to have both oral and systemic components.

  • Czech name

    Analýza dechu exhalovaného ústy a nosem a vzduchu v dutině ústní

  • Czech description

    Hmotnostní spektrometrie v proudové trubici s vybranými ionty (SIFT-MS) byla použita pro studium dechu tří zdravých dobrovolníků. Byly porovnány hodnoty koncentrací devíti stopových látek. Koncentrace acetonu, metanolu a isoprénu byla stejná v exhalacíchústy jako v exhalacích nosem. Koncentrace amoniaku, etanolu a kyanovodíku byly naproti tomu výrazně nižší v nosních exhalacích než v exhalacích ústy a nejvyšší byly ve statickém vzduchu odebraném z ústní dutiny. Hladiny formaldehydu v dechu a v ústní dutině byly nižžší než v okolním vzduchu. Výsledky ukazují že ústní dutina výrazně ovlivňuje složení dechu.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA202%2F06%2F0776" target="_blank" >GA202/06/0776: Advanced research and development of low-temperature plasma sources</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Journal of Breath Research

  • ISSN

    1752-7155

  • e-ISSN

  • Volume of the periodical

    2

  • Issue of the periodical within the volume

    -

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    13

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database