A novel physiologic sampling pump capable of rapid response to breathing.
Lee-L; Flemmer-M; Lee-EG; Harper-M; Lin-MI; Groves-W; Freivalds-A; Slaven-J
J Environ Monit 2009 Apr; 11(4):1020-1027
The merits of using physiologic sampling pumps (PSPs) instead of using constant-flow sampling pumps, i.e., "traditional sampling pumps" (TSPs), are discussed. A novel PSP that overcomes shortcomings of previous PSP designs is presented. Calibrated valves are used to obviate pump inertia that has limited the system response and accuracy of prior work. Technologies that provide minute ventilation ( VE) of subjects in real time may therefore be used to the limit of their own accuracies to sample inhalation exposures. Analysis of the design and data from a prototype are presented to show how air sampling can be modulated to follow breathing.
Sampling-equipment; Samplers; Sampling; Air-samplers; Air-sampling; Air-sampling-equipment; Air-sampling-techniques
Larry Lee, National Institute for Occupational Safety and Health (NIOSH), Health Effects Laboratory Division (HELD), Morgantown, WV, 26505-2888, USA
Journal of Environmental Monitoring