Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Dosimeter for oxides of nitrogen.

B I Ferber, F A Sharp, R W Freedman

    American Industrial Hygiene Association Journal
    |January 1, 1976
    PubMed
    Summary

    A new wet chemical dosimeter accurately monitors nitrogen dioxide (NO2) and nitrogen oxides (NOx) without auxiliary equipment. This intrinsically safe device is suitable for personal monitoring in environments like coal mines.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    A new paradigm for clinical decision support based on the patient record.

    Healthcare information management : journal of the Healthcare Information and Management Systems Society of the American Hospital Association·1993
    Same author

    On-filter analysis of quartz in respirable coal dust by infrared absorption and X-ray diffraction.

    American Industrial Hygiene Association journal·1974
    Same author

    Service livers of respirator cartridges versus several classes of organic vapors.

    American Industrial Hygiene Association journal·1973
    Same author

    Recent advances in the analysis of respirable coal dust for free silica, trace elements, and organic constituents.

    Annals of the New York Academy of Sciences·1972
    Same author

    Penetration of sodium chloride aerosols through respirator filters.

    American Industrial Hygiene Association journal·1972
    Same author

    Kinetic evaluation of the factor used in the Saltzman analysis of oxides of nitrogen.

    American Industrial Hygiene Association journal·1970

    Area of Science:

    • Environmental Science
    • Analytical Chemistry
    • Occupational Health

    Background:

    • Nitrogen dioxide (NO2) and nitrogen oxides (NOx) are significant air pollutants.
    • Personal monitoring devices are crucial for assessing workplace exposure.
    • Existing monitoring methods may require auxiliary equipment or lack intrinsic safety.

    Purpose of the Study:

    • To develop a simple, lightweight, and intrinsically safe dosimeter for personal monitoring of NO2.
    • To adapt the dosimeter for the determination of total NOx.
    • To evaluate the precision, accuracy, and operational factors of the developed dosimeter.

    Main Methods:

    • A wet chemical approach utilizing a membrane for NO2 permeation and absorption in an acidic hydrogen peroxide solution.
    • Oxidation of NO2 to nitrate (NO3-) for subsequent measurement.
    • Modification with an oxidizing prefilter to convert NO to NO2 for total NOx determination.
    • Laboratory analysis of nitrate using a specific ion electrode.

    Main Results:

    • The dosimeter demonstrated reasonably good precision and accuracy for both NO2 and NOx determination.
    • Operational factors such as orientation, liquid evaporation, and temperature (below 15°C) had insignificant effects.
    • The device is intrinsically safe and requires no auxiliary equipment, making it suitable for coal mines.

    Conclusions:

    • The developed dosimeter is a viable tool for personal monitoring of NO2 and NOx.
    • Further laboratory testing is recommended to cover the full Threshold Limit Value (TLV) range and evaluate interferences.
    • The dosimeter's limitations regarding excursion concentration detection should be considered.

    Related Experiment Videos