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Continuing Education — "The Action Level!®"

VOLUME 6(11), November 2009
Journal of Occupational and Environmental Hygiene


Provide FULL NAME and EMAIL information below, then answer the questions and click "Submit".

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CASE STUDIES:

Beryllium Aerosol Characteristics in the Magnesium and Aluminum Transformation Industry in Quebec: A Comparison of Four Different Sampling Methodologies
A. Dufresne, C. Dion, S. Viau, Y. Cloutier and G. Perrault

1. Concentration of beryllium in aluminum foundries may
    exceed the occupational exposure limit (OEL) because:

a. beryllium oxide is present naturally in high
          concentration (percentage) in bauxite
b. beryllium oxide is present naturally in high
          concentration (percentage) in alumina
c. beryllium concentrates in pot bath of aluminum
          smelter in the range of 40-90 fold
d. beryllium concentrates in pot bath of aluminum
          smelter in the range of 1-2 fold
2. The ACGIH® threshold limit value (TLV®) is set at:
a. 0.05 μg/m3 8-hour-TWA (time weighted average)
          occupational exposure limit for inhalable beryllium
b. 0.05 μg/m3 8-hour-TWA occupational exposure
          limit for total beryllium
c. 0.002 μg/m3 8-hour-TWA occupational exposure
          limit for inhalable beryllium
d. 0.05 μg/m3 8-hour-TWA occupational exposure
          limit for respirable beryllium
Molds and Mycotoxins in Indoor Environments: A Survey in Water-Damaged Buildings
Erica Bloom, Eva Nyman, Aime Must, Christina Pehrson and Lennart Larsson

3. It is not known at which air concentrations inhaled
    mycotoxins represent a health risk. True or False?

True
False
4. The principal difference between the use of culture and
    ergosterol measurements for determining environmental
    fungi is that the former method systematically discriminates
    yeasts over moulds. True or False?
True
False
Benzene Exposure in Industries Using or Manufacturing Paint in China – A Literature Review, 1956-2005
Hong Liu, Youxin Liang, Stephen Bowes, Hongzhi Xu, Yimei Zhou, Thomas W. Armstrong, Otto Wong, A.R. Schnatter, Jinbin Fang, Laiming Wang, Liping Nie, Hua Fu and Richard Irons

5. From the review of reported benzene exposures in the
    paint-using industries in China, the overall benzene levels
    at workplaces characterized as having good ventilation
    effectiveness were associated with lower benzene air
    concentrations than those with poor ventilation effectiveness.
    True or False?

True
False
6. Mean benzene air concentrations (typically measured as
    short-term samples) were lower than the Chinese occupational
    exposure limit for benzene in effect at the time for each of the
    historical periods assessed in the study. True or False?
True
False
Modelling of Oil Mist and Oil Vapour Concentration in the Shale Shaker Area on Offshore Drilling Installations
Magne Bråtveit, Kjersti Steinsvåg, Stein Atle Lie and Bente E. Moen

7. Air concentrations models did not depend upon which of the
    following factors:

a. base oil composition
b. effect of non-ionizing radiation
c. mud temperature
d. type of rig
e. localization of the shaker
8. The authors treated 'omitted' data by including a narrative
    comparing it to 'included' measurements. True or False?
True
False
An Historic Review of Additives and Modifiers Used in Paving Asphalt Refining Processes in the United States
Diana J. Mundt, Robert C. Adams and Kristin M. Marano

9. Most commonly used asphalt additives in the refining
    process are:

a. hydrocarbons
b. polymers
c. anti-strip agents
d. defoamers
e. all of the above
f. none of the above
10. The Clean Air Act Amendments of 1977 impacted
      production and use of cut-back asphalts. True or False?
True
False
A Review of Changes in Composition of Hot Mix Asphalt in the United States
Diane J. Mundt, Kristin M. Marano, Anthony P. Nunes and Robert C. Adams

11. Common additives to hot mix asphalt in the U.S. historically
      were:

a. Crumb rubber, Roofing shingles
b. Coal tar, Asbestos
c. Crumb rubber, Sulfur, Asbestos, Roofing shingles
d. Asbestos, Coal tar, Crumb rubber
e. Roofing shingles
12. Lower temperatures of hot mix asphalt may release fewer
      polycyclic aromatic hydrocarbons. True or False?
True
False
Assessment of Exposure to Secondhand Smoke at Outdoor Bars and Family Restaurants in Athens, GA, Using Salivary Cotinine
J.C. Hall, J.T. Bernert, D.B. Hall, G. St. Helen, L.H. Kudon and L.P. Naeher

13. According to the article, the implementation of indoor
     smoking bans/restrictions has succeeded in reducing the
     public's exposure to outdoor secondhand smoke. True or False?

True
False
14. According to the article, why was salivary cotinine chosen
     as a marker for secondhand smoke exposure?
a. non-invasive
b. ease of collection
c. highly specific to nicotine
d. all of the above

Be sure FULL NAME and EMAIL information is provided at the top of this page before submitting your answers.


Deadline for answers is November 30, 2009.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on December 11, 2009.

 
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