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Continuing Education — "The Action Level!®"

VOLUME 3(5), May 2006
Journal of Occupational and Environmental Hygiene

Answer the questions below and click "Submit".

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CASE STUDIES:

Acute Respiratory Syndrome after Inhalation of Waterproofing Sprays: A Posteriori Exposure-Response Assessment in 102 Cases
David Vernez, Raffaella Bruzzi, Hugo Kupferschmidt, Alice De-Batz, Pierre Droz and Romain Lazor

1. A significant correlation has been found between exposure levels
    to waterproofing sprays and health outcomes, suggesting that
    suitable ventilation conditions during spraying may always prevent
    the occurrence of adverse effects. True or False?

True
False
2. Several outbreaks of acute respiratory symptoms associated with
    formula changes in fluorinated polymers have been reported.
    True or False?
True
False
Mixed-Effect Models for Evaluating Multiple Measures of Atrazine Exposure Among Custom Applicators
Cynthia J. Hines, James A. Deddens, Chensheng Lu, Richard Fenske and Cynthia A.F. Striley

3. Which of the following exposure measures was the best predictor
    of 24 hr urinary atrazine eq. levels in custom applicators?

a. Kg of atrazine applied
b. Atrazine level in thigh patch samples
c. Atrazine level in hand rinse samples
d. Atrazine level in saliva samples
4. Spraying information regarding the number of kg of atrazine applied
    should be collected for ___ days.
a. 1
b. 2
c. 3
d. 4
Assessment of Fungal Contamination in Moldy Homes: Comparison of Different Methods
R. Todd Niemeier, Satheesh K. Sivasubramani, Tiina Reponen and Sergey A. Grinshpun

5. The use of multiple sampling methods is the best way to assess
    indoor mold contamination. True or False?

True
False
6. The source strength testing method, which is based on artificial
    aerosolization of fungal spores from surfaces (FSSST), provides
    a lower bound estimate of potential mold spore release into the
    indoor air. True or False?
True
False
Indicators of Moisture and Ventilation System Contamination in U.S. Office Buildings as Risk Factors for Respiratory and Mucous Membrane Symptoms: Analyses of the EPA BASE Data
Mark Mendell, Myrna Cozen, Quanhong Lei, Howard Brightman, Christine Erdmann, John Girman and Susan Womble

7. In the EPA BASE Study of U.S. office buildings, the strongest risk
    factor found for increased lower respiratory and mucous membrane
    symptoms among occupants was infrequent cleaning of the drip
    pans and cooling coils in the HVAC system. True or False?

True
False
8. In the EPA BASE Study of U.S. office buildings, current or past
    water damage in either the occupied spaces or the HVAC systems
    was, as expected, consistently associated with increased lower
    respiratory symptoms among occupants. True or False?
True
False
Respiratory Protection from Isocyanate Exposure in Auto Body Repair and Refinishing Industry
Youcheng Liu, Meredith H. Stowe, Dhimiter Bello, Susan R. Woskie, Judy Sparer, Rebecca Gore, Fred Youngs, Mark R. Cullen and Carrie A. Redlich

9. Based on the results from this study, which of the following
    statements is true?

a. There was no significant difference in the overall
          pass rate and fit factor between previously fit
          tested workers and those without previous fit
          testing
b. In-facepiece concentrations of isocyanate species
          and total isocyanate group (NCO) exceeded their
          respective OELs and STELs
c. Outside-facepiece concentrations of isocyanate
          species and total NCO were well below their
          respective OELs and STELs
d. No statistically significant difference in workplace
          protection factor was found for pHDI, pIPDI and
          total NCO between 3M and SAS respirators.
10. The estimated 5th percentile of workplace protection factor based
      on total NCO in this study was below the ANSI assigned
      protection factor for negative pressure air-purifying half-facepiece
      respirators with organic vapor cartridges. True or False?
True
False
Estimating Benzene Exposure at a Solvent Parts Washer
Mark Nicas, Marc J. Plisko and John W. Spencer

11. When benzene is present in mineral spirits as a small weight by
      weight fraction, the benzene will tend to evaporate from the
      mineral spirits at a constant rate (mg benzene per minute).
      True or False?

True
False
12. To estimate solvent vapor exposure close to a point source of
      emission (for example, a small tank of solvent), which of the
      following vapor dispersion constructs is preferable to use:
a. use a well mixed room model
b. use a well mixed room model but arbitrarily reduce
          the room supply air rate
c. use a near field/far field model


Deadline for answers is May 31, 2006.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on June 12, 2006.

 
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