American Conference of Governmental Industrial Hygienists (ACGIH®), your industrial hygiene, environmental, occupational health and safety resource that advances worker health and safety and offers books, conferences, and education and training courses.

Site MapContact UsFAQsHome


Search  
Advanced

AboutProductsMembershipEducationTLV/BEI ResourcesFoundationResources
Sign up for the ACGIH.ORG Mailing List

Products


Continuing Education — "The Action Level!®"

VOLUME 6(7), July 2009
Journal of Occupational and Environmental Hygiene


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

Full Name:
E-Mail:

CASE STUDIES:

The Effect of Workload on Biological Monitoring of Occupational Exposure to Toluene and n-Hexane: Contribution of Physiologically Based Toxicokinetic Modeling
Irène Sari-Minodier, Ginette Truchon, Ginette Charest-Tardif, Anick Bérubé and Robert Tardif

1. Which of the following exposure indicators of toluene or
    n-hexane shows the highest predicted increase with physical
    activity?

a. urinary o-cresol (end of the shift)
b. toluene in blood (prior to the last shift of
          the workweek)
c. free 2,5-hexanedione (end of the shift, end
          of the workweek)
d. unchanged toluene in urine (end of the shift)
2. For workers exposed to toluene and performing energetic
    manual tasks, the biological concentrations may exceed
    the recommended Biological Exposure Indices (BEI®),
    despite an airborne concentration below the Threshold
    Limit Value (TLV®). True or False?
True
False
Predicting Changes in PM Exposure over Time at U.S. Trucking Terminals Using Structural Equation Modeling Techniques
Mary Davis, Francine Laden, Jaime Hart, Eric Garshick, Andrew Blicharz and Thomas Smith

3. Background exposure to elemental carbon at trucking terminals
    was __________ during the repeat (later) sampling trips.

a. Higher
b. Lower
4. The repeat sampling trips were performed during the same time
    of year to limit the impact of _________ on elemental carbon
    exposures at the trucking terminals.
a. Seasonality
b. Worker vacation schedules
Development and Validation of a Wipe Test Method Using Liquid Chromatography with Tandem Mass Spectrometry for the Determination of Perfluorooctanoate (PFO) on Various Surfaces
Miguel A. Botelho, Kristine Kurtz, Barbara J. Dawson and Mary A. Kaiser

5. Why did the wipe test work well for painted surfaces,
    stainless steel, polycarbonate, Formica, and butyl rubber but
    not for the laminated disposable suit material?

a. Laminated disposable suit material is too soft.
b. Laminated disposable suit material is too thin.
c. Wiping solvent penetrated and absorbed into
          the fabric.
d. Not enough fabric was used.
6. Why does the method require multiple quality control blanks?
a. Blanks are easy for the laboratory to obtain.
b. Perfluorooctanoate salts have been used to
          synthesize fluorinated polymers often
          found in the laboratory.
c. Perfluorooctanoate salts are insoluble in the
          wetting solvent.
d. It is difficult to obtain isotopically enriched
          internal standards.
Dust Control Effectiveness of Drywall Sanding Tools
Deborah E. Young-Corbett and Maury A. Nussbaum

7. When compared to the block hand-sander, the ventilated
    drywall sanding tool produces what percentage of a reduction
    in respirable dust?

a. 50%
b. 88%
c. 25%
d. 100%
8. Calcite, a primary constituent of drywall joint compound,
    has been associated with which health effect?
a. Upper airway obstruction
b. Pneumoconiosis
c. Lung cancer
d. Neoplasm of the buccal cavities
Summary of Retrospective Asbestos and Welding Fume Exposure Estimates for a Nuclear Naval Shipyard and Their Correlation with Radiation Exposure Estimates
D.D. Zaebst, E.A. Seel, J. Yiin, S.J. Nowlin and P. Chen

9. "Shop" was used as a grouping mechanism for the
    reconstruction of exposures at the Portsmouth Naval Shipyard.
    True or False?

True
False
10. Spearman rank correlation coefficients between cumulative
      asbestos exposure and cumulative occupational radiation
      dose (depending on lag) ranged from:
a. 0.34 to .49
b. 0.09 to 0.14
c. 0.63 to 0.81
d. 0.79 to 0.90
Laboratory Evaluation of a Field-Portable Sealed Source X-ray Fluorescence Spectrometer for Determination of Metals in Air Filter Samples
Nicholas Lawryk, H. Amy Feng and Bean Chen

11. Mixed cellulose ester (MCE) has been the filter media of
      choice for air sample collection and subsequent analysis
      by field portable X-ray fluorescence spectrometry (FP XRF).
      Of the filter media investigated in the study described in this
      article, which one could not be recommended because it did
      not have suitably low limits of detection (LODs) for the
      elements measured?

a. Polypropylene (PPE)
b. Polyvinyl chloride (PVC)
c. Polytetrafluoroethylene (PTFE)
d. Non-quartz glass fiber (GF)
e. None of the above
12. According to NIOSH guidelines, an experimental method is
      suitable for development if recoveries exceed 70% in
      the tested concentration range. True or False?
True
False
Work-related Fatalities in the People's Republic of China
Kezhi Jin and Theodore K. Courtney

13. According to the article and the available Chinese national
      data presented in it, in which accident categories does the
      U.S. have a greater proportion of fatal injuries than China?

a. overturned vehicle, struck by, fall, drowning
b. struck by, collision, electrocution, exposure
          to temperature extremes
c. overexertion, fire, explosion, electrocution
d. collision, poisoning, exposure to temperature
          extremes, overturned vehicle
14. In the article, the authors compare ILO estimates of the
      total frequency of fatalities from the published literature with
      the available Chinese national data. Which countries or
      regions provide the main basis for the ILO estimates of
      Chinese national fatalities?
a. Japan, Russia, Kazakhstan
b. India, Former Socialist Economies of Europe
c. Former Socialist Economies of Europe,
          Kazakhstan
d. Japan, India, Former Socialist Economies of Asia

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


Deadline for answers is July 31, 2009.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on August 10, 2009.

 
MEMBERS ONLY: Link to FREE Online Access to JOEH

MEMBERS ONLY: Link to Applied Archives

Register for "The Action Level!®"

Answer "The Action Level!®" Questions

View "The Action Level!®" Answers

JOEH Feedback Form

JOEH Helpline Info

Submit an Article

 

Last update on 05/11/2009. Questions or problems? Please contact us. © 2013 American Conference of Governmental Industrial Hygienists, 1330 Kemper Meadow Drive, Cincinnati, Ohio 45240, 513-742-2020. ACGIH® and related marks are marks of the American Conference of Governmental Industrial Hygienists. All Rights Reserved. Terms of Access. ACGIH® Privacy Policy. Site Map.