|Document ID (ISN)||78183|
|ISSN - Serial title
||1529-8663 - AIHA Journal
|Convention or series no.
||Guffey S.E., Flanagan M.E., van Belle G.
||Air sampling at the chest and ear as representative of the breathing zone
||July-Aug. 2001, Vol.62, No.4, p.416-427. Illus. 22 ref.
||02-0269.pdf [in English]
||Tracer gas concentrations were measured on a 60%-sized mannequin, which was holding a sulfur hexafluoride source at waist height while standing in a wind tunnel. Samplers were placed at the mannequin's mouth, in front of the ear and at three chest locations at lapel level. Simultaneous 15-min time-weighted average samples were taken with sampling pumps. Concentrations at all sampling locations when the mannequin faced to the front and side were less than a tenth of the levels measured at the nose, when the mannequin faced downstream. Different flow orientations and velocities affected the ratios of concentrations. At the back orientation, the chest sampler provided lower overestimates of measurements at higher velocities than at lower values. Results showed significant differences between concentrations at the nose and lapel. These findings should be interpreted with caution, because a dense tracer gas and an unheated not breathing mannequin were used.
||tracer gases; location of sampling points; velocity of flow; sulfur hexafluoride; monitoring for surface contamination; air sampling; wind tunnels
||evaluation of equipment
||D - Periodical articles
|Country / State or Province||USA|
||Heating, ventilation and climate
|Broad subject area(s)
||Compressed gases and pressure vessels
Halogens and their inorganic compounds