Page 308 - Industrial Ventilation Design Guidebook
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264 CHAPTER 5 PHYSIOLOGICAL AND TOXICOLOGICAL CONSIDERATIONS
FIGURE 5.34 (a) Correlations (y = 7.2x § 3.5; r = 0.97) between the amount of mevinphos on
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the foliage and the dermal exposure rate to mevinphos via the hands, (b) Mean (±SD) concentrations
of mevinphos in the breathing zone of the workers immediately after application and on the morning of
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the two first working days after the application. (Used with permission.)
Entry of Particles into the Body
The aerodynamic particle diameter determines the fate of particles in the
respiratory system. Coarse particles are deposited in the nose and nasophar-
ynx. Smaller particles that pass the upper airway can be deposited in the bron-
chial region and lower airway. A size-selective deposition model and sampling
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of particles has been standardized both in Europe and internationally. The
