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Continuing Education — "The Action Level!®"

VOLUME 9(4), April 2012
Journal of Occupational and Environmental Hygiene


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CASE STUDIES:

Lead Exposures from Varnished Floor Refinishing
Joseph Schirmer, Jeff Havlena, David E. Jacobs, Sherry Dixon and Robert Ikens

1. Which measurement method more likely found that lead in
    varnish exceeded federal regulatory levels for lead in
    surface coatings?

a. measuring lead loading (weight of lead/surface
          area) with an X-ray fluorescence (XRF)
          instrument
b. collecting bulk samples of varnish and determining
          the concentration of lead (weight of lead in
          sample/weight of sample) by laboratory analysis
2. Factors such as whether the dwelling was constructed prior
    to 1930 and specifically refinishing stair surfaces (as opposed
    to floors) and also refinishing in the absence of dust suppression
    methods are predictive of significant floor dust loadings.
    True or False?
True
False
Personal Exposure to PM2.5 and Urinary Hydroxy-PAH Levels in Bus Drivers Exposed to Traffic Exhaust, in Trujillo, Peru
Olorunfemi Adetona, Andreas Sjodin, Li Zheng, Lovisa C. Romanoff, Manuel Aguilar-Villalobos, Larry L Needham, Daniel B. Hall, Antonio Luis, Brandon E. Cassidy, Christopher D. Simpson and Luke P. Naeher

3. Which of the following could affect the utility of a biomarker
    as a proxy for measuring exposure to a pollutant from a particular
    source in a work environment?

a. Pollutant quantity from source
b. Half-life of biomarker
c. Specificity of biomarker
d. Uniqueness of pollutant
e. All of the above
4. Partitioning of polycyclic aromatic hydrocarbons (PAHs) between
    the gaseous and particulate phase does not depend on the
    molecular weight of the PAH. True or False?
True
False
Effect of Training on Exposure Judgment Accuracy of Industrial Hygienists
Monika Vadali, Gurumurthy Ramachandran, John R. Mulhausen and Sudipto Banerjee

5. Routine use of statistical tools to analyze small exposure data
    sets will lead to more accurate judgments rather than relying on
    rules of thumb. True or False?

True
False
6. Based on the data presented in this study, which statement is
    most accurate?
a. Qualitative judgment accuracy of industrial
          hygienists in this sample was better than
          that predicted by random chance.
b. Qualitative judgment accuracy of industrial
          hygienists in this sample was worse than
          that predicted by random chance.
c. Qualitative judgment accuracy of industrial
          hygienists in this sample was better than
          quantitative judgment accuracy.
Cortisol and Interleukin-6 Responses during Intermittent Exercise in Two Different Hot Environments with Equivalent WBGT
Heather E. Wright, Tom M. McLellan, Jill M. Stapleton, Stephen G. Hardcastle and Glen P. Kenny

7. The limited Cortisol response observed during the heat stress
    conditions was attributed to the:

a. similar exercise intensities in the Hot/Dry
          and Warm/Wet environments.
b. intermittent nature of the exercise and core
          temperatures remaining below 38.0ºC.
c. age and fitness level of the participants.
d. absence of heavy protective clothing.
8. Under which conditions does Wet Bulb Globe Temperature
    underestimate the level of heat strain experienced by
    humans?
a. dry environments with a steady air flow
b. increased sweating and core temperatures
c. restricted evaporative heat loss and/or air
          movement
d. reduced circulating Cortisol responses
Cohort Mortality Study of Roofing Granule Mine and Mill Workers. Part I. Estimation of Historical Crystalline Silica Exposures
Paul Hewett, Sandy Z. Morey, Brian M. Holen, Perry W. Logan and Geary W. Olsen

9. Which of the following strategies was not employed in this study?

a. Review of comprehensive sampling results
b. Professional judgment
c. Data analysis
d. Exposure classification
10. Morbidity is generally considered a more sensitive indicator
      of effect than mortality. True or False?
True
False
Cohort Mortality Study of Roofing Granule Mine and Mill Workers. Part II. Epidemiologic Analysis, 1945–2004
Geary W. Olsen, Kara L. Andres, Rebecca A. Johnson, Betsy D. Buehrer, Brian M. Holen, Sandy Z. Morey, Perry W. Logan and Paul Hewett

11. What is the earliest year that death information can be
      searched by qualified researchers using the National Death
      Index (NDI)?

a. 1960
b. 1978
c. 1979
d. 1980
12. The unit used for cumulative respirable crystalline silica is:
a. mg/m3
b. mg/m3-years
c. years
A Novel Strategy for Retrospective Exposure Assessment in the Norwegian Silicon Carbide Industry
Solveig Føreland, Merete Drevvatne Bugge, Berit Bakke, Erik Bye and Wijnand Eduard

13. What kind of fibers is formed in the silicon carbide
      production process?

a. asbestos fibers
b. silicon fibers
c. silicon carbide fibers
d. carbon fibers
14. Heating of quartz can lead to transformation into:
a. silicon carbide
b. cristobalite
c. Quartz is not transformed when heated.
The Development and Validation of an Assay for the Quantification of the P. chrysogenum Allergen Pch52
Chunhua Shi, Don Belisle, Shari Levac and J. David Miller

15. What types of antibodies were used to develop this assay?

a. monoclonal
b. monoclonal + polyclonal
c. monoclonal + monoclonal
d. polyclonal + polyclonal
16. This immunoassay was developed to quantify which
      of the following?
a. P. chrysogenum spores
b. P. chrysogenum hyphal fragments
c. P. chrysogenum spores + hyphal fragments
d. Pch antigen

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Deadline for answers is April 30, 2012.

Answers will be available online at
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on May 9, 2012.

 
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