Related Experiment Videos
Passive sampling and head space analysis for quantitative determination of nitrous oxide exposure
1Department of Occupational Health, Osaka Prefectural Institute of Public Health, Japan.
American Industrial Hygiene Association Journal
|September 25, 1999
Summary
A new passive sampler accurately measures personal exposure to nitrous oxide gas. This technique is reliable and unaffected by environmental factors, making it ideal for monitoring surgical environments.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Occupational Health
Background:
- Nitrous oxide (N2O) is a common anesthetic gas.
- Accurate monitoring of personal exposure to N2O is crucial for healthcare professionals.
- Existing methods for N2O exposure assessment can be cumbersome.
Purpose of the Study:
- To develop and validate a novel passive sampling technique for determining time-weighted average personal exposure to nitrous oxide.
- To assess the performance and reliability of the developed passive sampler.
Main Methods:
- Passive collection of N2O on a molecular sieve within a glass tube.
- Partial desorption and solid-gas equilibrium at 100°C in a vial.
- Quantification of N2O in the headspace air using gas chromatography with an electron capture detector.
Main Results:
- N2O concentration in the headspace is proportional to atmospheric N2O concentration and sampling time (up to 1600 ppm/hr).
- The method demonstrates a coefficient of variance of less than 10%.
- Sampler performance is not impacted by water vapor, carbon dioxide, or air currents.
Conclusions:
- The developed passive sampler offers a reliable and accurate method for assessing personal N2O exposure.
- The sampler's small size, light weight, and robustness make it suitable for use in diverse environments, including operating rooms.
- This technique facilitates effective occupational health monitoring for personnel exposed to nitrous oxide.