課程名稱︰作業環境測定一
課程性質︰領域必修
課程教師︰黃耀輝
開課學院：公衛學院
開課系所︰職衛所
考試日期（年月日）︰101.10.31
考試時限（分鐘）：take home
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1. Given you are requested to plan a working environment sampling for airbone
dust in a steel company, what components should be involved and/or
considered in your sampling plan? (8%)
2. Recognition of hazards at work place is one of the most important scopes of
industrial hygiene. For the task of hazard recognition, what contents should
be included? (8%)
3. Please define TLV-TWA? How to deal with TLV if working with unusual work
schedules? Please list the rationales. (8%)
4. Following is a schematic of spirometer. It is a primary or secondary
standard? Why? (8%) (圖略)
5. Following is a calibration system for standard gas. Please brief its
mechanism for the generation of a calibration atmosphere. (8%) (圖略)
6. What is aerosol by definition? And what are the major categories for
aerosol? Why is aerodynamic diameter used for aerosol size presentation?
(8%)
7. What the important factors affecting particle behavior? (8%)
8. What are inhalable particulate mass(IPM), thoracic particulate mass(TPM),
and respirable particulate mass(RPM), respectively?
What is the relationship of these categories with the device for airborne
particulate sampler and the deposition of particles in the human tract? (8%)
9. Why the GSD of log-normal particulate size distribution is equal to d /d
84 50
or d /d ? (d are designated as the percentiles of particulate size
50 16 xx xx
distributions) (8%)
10. What are PEM sampler, IOM sampler, cyclone (which is connected to cassette
for sampling)? (7%)
11. Please convert the concentration of CH , 30μg/L, into ppb at 760 mmHg and
4
27℃. (7%)
12. A tank contains 20 gal of solvent having 20% (by weight) toluene(C H CH )
6 5 3
in xylene( C H (CH ) ). What would be the highest concentration of toluene
6 4 3 2
near the surface of the tank at NTP? Given pv(C H CH ) = 21 mmHg @ 25℃.
6 5 3 (7%)
13. A study reported that mean lead concentration in the ambient air is
3 3
50μg/m , with standard deviation(SD) of 5μg/m. What are the upper limit
and lower limits of mean ±2*SD? Meanwhile, total organic solvent
concentration is reported as geometric mean(GM) of 20 ppb with geometric
standard deviation(GSD) of 1.5. Again, what are the upper and lower limits
with two GSD away from GM? (7%)
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