Exposure Assesment from Laboratory Fume Hoods

A fume hood is defined as a ventilated enclosed work space intended to capture, contain, and exhaust fumes, vapors, and particulate matter generated inside the enclosure.   ANSI/ASHRAE 110-1995, " Method of Testing Performance of Laboratory Fume Hoods Standard" provides quantitative and qualitative test method for evaluating the fume contaminant of a laboratory fume hood.   However the ANSI/ASHRAE 110-1995 does not and can not relate to actual exposure.   The purpose of this study is to find a relationship between the static test and exposure.
The goals are as follows:

	Assess the TOTAL contaminant loss from the face and 12” around the hood for three different supply types and fume hood locations in the room for a static (no human obstruction) and dynamic test (with a moving person in front of the hood, sash movement, etc).
	Evaluate the effect of across draft on the TOTAL contaminant loss from the face of the hood and 12” around the hood for a static and dynamic setting for a single air supply type and hood location.
	Evaluate the effect of turbulent intensity in room cross draft on the TOTAL loss of contaminant from the face of the hood and 12” around the hood for a static and dynamic setting for a single air supply type and ood location