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Continuing Education — "The Action Level!®"

VOLUME 7(2), February 2010
Journal of Occupational and Environmental Hygiene


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CASE STUDIES:

Personal Exposure, Behavior, and Worksite Conditions as Determinants of Blood Lead among Bridge Painters
Ema G. Rodrigues, M. Abbas Virji, Michael D. McClean, Janice Weinberg, Susan Woskie, Lewis D. Pepper

1. Over the two-week monitoring period, the overall average
    blood lead levels among bridge painters:

a. Decreased by 2 μg/dL
b. Increased by 2 μg/dL
c. Increased by 2 mg/dL
d. Stayed the same
2. This study investigated site-level characteristics potentially
    associated with increased blood lead levels among bridge
    painters. Which of the following work-site characteristics
    was significantly associated with higher blood lead levels
    after adjusting for other significant covariates?
a. Having a hand-washing facility on-site
b. Having a designated eating area on-site
c. Having a containment facility on-site
d. Having a decontamination facility on-site
Evaluation of IOM Personal Sampler at Different Flow Rates
Yue Zhou and Yung-Sung Cheng

3. The sampling efficiency of the IOM personal sampler was
    affected by the wind speed. True or False?

True
False
4. The IOM sampler can only be operated at its designed
    flow rate, 2 L/min. True or False?
True
False
Field Sampling Investigations within the Road Paving Industry
François Deygout and Patricia Le Coutaller

5. The 37-mm cassette individual sampler is sufficiently
    adapted to collect the inhalable convention of field organic
    aerosols from asphalt fumes. True or False?

True
False
6. Wind was found to be a key determinant of the exposure
    level (inhalable fraction) of asphalt paving workers. True
    or False?
True
False
Anthrax Letters: Personal Exposure, Building Contamination and Effectiveness of Immediate Mitigation Measures
Bill Kournikakis, Jim Ho and Scott Duncan

7. When using a slit to agar sampler to collect bacterial
    spore aerosols, the narrow slit through which the air
    passes allows only smaller aerosol particles to be sampled
    and excludes spore agglomerates containing more than
    200 spores. True or False?

True
False
8. A person infected with Bacillus anthracis is not contagious
    and the disease cannot spread from person to person. Similarly,
    a person contaminated with Bacillus anthracis spores cannot
    spread the disease from person to person. True or False?
True
False
Manganese, Iron and Total Particulate Exposures to Welders
Michael R. Flynn and Pam Susi

9. Based on the data sets analyzed in this paper, an estimate
    of an arc welder's long-term exposure to manganese relative
    to the 2009 ACGIH TLV® approximates:

a. one tenth of the TLV®
b. the TLV®
c. 10 times the TLV®
10. Welders' manganese exposures are well correlated with:
a. Total particulate exposures
b. Iron exposures
c. Both
Physiologic Monitoring in Firefighter Ensembles; Wearable Plethysmographic Sensor Vest vs Standard Equipment
Aitor Coca, Raymond J. Roberge, W. Jon Williams, Douglas P. Landsittel, Jeffrey B. Powell and Andrew Palmiero

11. Respiratory physiological parameters such as Minute Ventilation
      , Respiratory Rate (RR) and/or Tidal Volume (VT) can be
      measured with physiologic apparatus other than
      a standard pneumotachograph. True or False?

True
False
12. For the purpose of this study, authors used a commercially
      available wearable plethysmographic sensor vest known
      as the LifeShirt®. What kind of technology is employed to
      determine the RR, VT, and ?
a. ECG electrodes
b. Respiratory Inductance Plethysmographic
          (RIP) bands
c. SCBA
d. Skin temperature sensors
Impact of Production Systems on Swine Confinement Buildings Bioaerosols
Valérie Létourneau, Benjamin Nehmé, Anne Mériaux, Daniel Massé and Caroline Duchaine

13. According to the limited data available, what management
      system seems the most promising for a worker's protection
      and decreased bioaerosol load?

a. Slatted floors
b. Source separation systems
c. Bedding material
14. What is the most commonly used swine manure management
      system in Eastern Canada?
a. Slatted floors
b. Source separation systems
c. Bedding material

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Deadline for answers is February 28, 2010.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on March 10, 2010.

 
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