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Continuing Education — "The Action Level!^Ž"

VOLUME 7(1), January 2010
Journal of Occupational and Environmental Hygiene

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CASE STUDIES:

The Suitability of the IOM Foam Sampler for Bioaerosol Sampling in Occupational Environments
Susanna Haatainen, Juha Laitinen, Markku Linnainmaa, Tiina Reponen and Pentti Kalliokoski

1. According to the results obtained, the concentrations
of fungi in the workers' breathing zones were higher than
at the stationary sites. True or False?

True
False

2. Desiccation prevents the general use of the IOM foam
sampler for gram-negative bacteria if culture-based analysis
technique is used. True or False?

True
False

Elastomeric Half Facepiece Air Purifying Respirator Performance in a Lead Battery Plant
Larry Janssen and Nicole V. McCullough

3. Mean PIXE analytical results for lead were approximately
45% higher than the ICP analyses because:

a. PIXE is not accurate for elements with high
          atomic mass
b. ICP cannot detect a lead mass below 1 μg
c. Non-destructive analytical methods routinely
          report higher values than destructive methods
d. Interpretation of PIXE analyses assumes the
          lead density is uniform across the entire
          filter surface

4. The results of this study demonstrate good correlation
between workplace protection factors and quantitative fit
factors. True or False?

True
False

Occupational Exposure to Cobalt: A Population Toxicokinetic Modeling Approach Validated by Field Results Challenges the BEI^Ž for Urinary Cobalt
Aurelie Martin, Frederic Yves Bois, Francis Pierre and Pascal Wild

5. The protocol described in this paper would be suitable for
a toxicokinetic modeling of substances with a long elimination
half time (more than three days). True or False?

True
False

6. Regarding the central and peripheral compartments of the
toxicokinetic modeling presented in this article, which
has a physiological interpretation?

a. Both
b. Only the central compartment
c. Neither

Co-exposure to Noise, N,N-dimethylformamide and Toluene on 24-Hour Ambulatory Blood Pressure in Synthetic Leather Workers
Ta-Yuan Chang, Ven-Shing Wang, Shou-Yu Lin, Hsin-Yu Yen, Jim-Shoung Lai and Chiu-Shong Liu

7. In the present study, the authors used the Bonferroni correction
    to avoid significant results purely by chance while performing
    multiple comparisons. Therefore, the significance level was
    set at:

a. 0.0100
b. 0.0125
c. 0.017
d. 0.050

8. The authors conclude that there are no interactive effects of
    co-exposure to noise, DMF and toluene on ambulatory blood
    pressure among synthetic leather workers. The possible
    reason might be the insufficient intensity of:

a. noise exposure
b. DMF exposure
c. toluene exposure
d. noise, DMF and toluene exposure

A Task-Specific Assessment of Swine Worker Exposure to Airborne Dust
Patrick O'Shaughnessy, Kelley J. Donham, Tom Peters, Craig Taylor, Ralph Altmajer and Kevin M. Kelly

9. A time-weighted average dust exposure level for workers in
    swine buildings has been proposed. This level is lower than the
    TLV-TWA for "particulates not otherwise specified." What is
    the recommended level?

a. 0.1 mg/m³
b. 1.0 mg/m³
c. 2.5 mg/m³
d. 5.0 mg/m³

10. As demonstrated in this study, the _____________ task
      produced the highest dust concentrations. The reason why this
      task produced high concentrations was because it involved
      ___________________.

a. feeding; aerosolizing falling grain
b. cleaning; resuspending particles
c. weaning; moving pigs kicking up dust
d. equipment breakdown; dislodging settled dust

Comparison of Free Radical Generation by Pre- and Post-Sintered Cemented Carbide Particles
Aleksandr B. Stefaniak, Christopher J. Harvey, Valerie C. Bukowski and Stephen S. Leonard

11. In the test systems evaluated, cobalt- and tungsten-containing
powders generated the hydroxyl radical (•OH). True
or False?

True
False

12. Inhalation of cobalt is associated with development of asthma
whereas skin contact may cause sensitization and
_____________.

a. hard metal disease
b. cancer
c. allergic contact dermatitis
d. none of the above

Measured Elemental Carbon by Thermo-Optical Transmittance Analysis in Water-Soluble Extracts from Diesel Exhaust, Wood Smoke and Ambient Particulate Samples
Anna Wallén, Göran Lidén and Hans-Christen Hansson

13. The thermal/wet chemistry methods measure _____________
carbon and optical methods measure ____________ carbon.

a. elemental, black
b. black, elemental
c. elemental, elemental
d. black, black

14. The result of this study indicates that the detected concentration
      of elemental carbon can be positively biased if particles contain
      water-soluble carbonaceous compounds that are misclassified
      in the analysis as elemental carbon. For which particulate
      source(s) was this true?

a. Diesel exhaust
b. Biodiesel exhaust
c. Wood smoke

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

Deadline for answers is January 31, 2010.

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

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