Sampling and Analysis of Butyltin Compounds in Air Using Gas Chromatography and Flame Photometric Detection
Robert Lieckfield, Jr.
1. The importance of speciating the various organotin compounds
is based on research suggesting that the toxicity of organotins
is related to:
a. the number of tin atoms in the compound.
b. the number and size of the alkyl groups
in the compound.
c. the metabolic breakdown of tin.
d. the physical state of the organotin.
2. A key consideration in the analytical method is the use
of hydrated sodium tetraborate (STEB) so that the derivation
of butyltins is completed at a more controlled rate of
reaction. True or False?
True
False
Association Between Lung Function and Exposure to Smoke Among Firefighters at Prescribed Burns
Jane Koenig
3. In which lung function test did we find the greatest
percent change in pre–shift to post–shift percent reading?
a. FEV1
b. FVC
c. FEF25-75
4. We found strong evidence of a threshold value above
which exposure to respiratory irritants caused significant
lung function decrements. True or False?
True
False
Respiratory Protection Against Mycobacterium Tuberculosis: Quantitative Fit Test Outcomes for Five Type N95 Filtering-Facepiece Respirators
Kiyoung Lee
5. Prior to fit testing a large number of individuals with several models
of N95 filtering–facepiece respirators, it is valid to select these
models by fit testing an anthropometrically representative test
panel of wearers with different candidate respirators.
True or False?
True
False
6. It is acceptable to use a NIOSH–certified Type N95
filtering–facepiece respirator without first being fit tested.
True or False?
True
False
Risk Factors for Work-Related Low Back Pain in Registered Nurses and Potential Obstacles in Using Mechanical Lifting Devices
George Byrns
7. This research demonstrated the strongest association between
low back pain in nurses and which two risk factors:
a. Age and body mass index
b. Lifting and the number of years worked as a nurse
c. Psychological stress and age
d. Lifting and social support
8. The self-reported lifetime prevalence of back pain in this group
of nurses was:
a. 27%
b. 36%
c. 51%
d. 84%
Potentially Pathogenic Slowly Growing Mycobacteria Released Into Working Air During the Remediation of Buildings
Sirpa Rautiala
9. Slowly growing mycobacteria are acid–fast, gram negative bacteria,
the incubation time of which may be months. True or False?
True
False
10. Environmental mycobacteria has recently been connected
with allergic alveolitis. True or False?
True
False
Release of Simulated Anthrax Particles from Disposable Respirators
Nola Kennedy
11. Which of the following influence the release of adhered
particles from fibers?
a. Particle size
b. Air velocity
c. Particle surface coating
d. Humidity
e. a. and c.
f. All of the above
12. The results of the study indicate that the release of particles
from disposable respirators is insignificant unless the respirator
strikes a hard surface at a velocity greater than 2 m/s.
True or False?
True
False
Cadmium Overexposures at Three Nonferrous Foundries: An Unusual Source
Thomas K. Morris
13. What was the lowest cadmium content in SHG zinc reported
in this study?
a. 0.4%
b. 0.04%
c. 0.004%
d. 0.0004%
14. Cadmium at the concentrations reported in this study did not
result in any overexposures. True or False?
True
False
