Abstract
To noninvasively determine the distribution of inhaled air pollutants in the intact human respiratory tract, a gas analyzer with a fast dynamic performance, small sampling flow, and high sensitivity is required. Such an analyzer was developed for chlorine (Cl2) by utilizing a commercially available transducer consisting of a thermionic catalytic source and a metallic collector. Operation of the transducer at 600–800 °C, an absolute pressure of 120 Torr, and a sampling flow rate of 0.6 ℓ/min resulted in a sensitivity of 3–5 pA/ppm Cl2, a minimum detection limit of 0.04 ppm, a response time of less than 100 ms, and signal-to-noise ratios of approximately 10 and 40 at Cl2 mole fractions of 0.1 and 1.0 ppm, respectively. The calibration was linear in the range of 0.3 to 4.0 ppm Cl2 and insensitive to variations in temperature, CO2 content, and humidity which exist in respired air during a breathing cycle.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
