The Action Level!® Quiz - Volume 13 No 2 - February 2016

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

Identification of Methylene Diphenyl Diisocyanate Thermal Degradation Products in a Generation Chamber by Liquid Chromatography Coupled with Tandem Mass Spectrometry

Sébastien Gagné and Yves Cloutier

1. Heating at 180 C is the best way to obtain MDI vapor in a generation chamber and develop non-specific isocyanate sampling devices. True or False?

2. Derivatisation is needed to identify some MDI thermal degradation compounds. True or False?

Immediate Screening of Lead Exposure in the Workplace Using Portable
X-ray Fluorescence

Jean-Philippe Gorce and Martin Roff

3. The multi-orifice total sampler, Institute of Occupational Medicine sampler, and conical sampler are examples of personal samplers that have been specifically created to mimic inhalable dust. True or False?

4. Wood (untreated, rough finish), concrete (unpainted), textiles and any rough, sticky or unsupported (deforming engineered) surfaces are materials that are unlikely to qualify as optimum surfaces for efficient dust recovery using moist wipes. True or False?

Evaluation of a Passive Optical Based End of Service Life Indicator (ESLI) for Organic Vapor Respirator Cartridges

Melissa Checky, Kevin Frankel, Denise Goddard, Erik Johnson, J. Christopher Thomas, Maria Zelinsky and Cassidy Javner

5. NIOSH requires that respirator cartridge ESLIs indicate with at least how much service life remaining?

6. Respirator cartridge ESLIs can provide real-time feedback according to changes in contaminants, exposure concentrations, temperature, humidity, and breathing rates. True or False?

Characterization of Emissions from a Desktop 3D Printer and Indoor Air Measurements in Office Settings

Patrick Steinle

7. What are the two major groups of substances emitted by fused deposition modeling (FDM) 3D-printers?

8. Ultrafine aerosols emitted by the studied FDM-printer are:

Determination of Pressure Drop across Activated Carbon Fiber Respirator Cartridges

Jo Anne G. Balanay and Claudiu T. Lungu

9. Activated carbon fiber in cloth form is not recommended for use in typical respirator cartridge dimensions if used by itself (100% cloth) because of its unacceptably high pressure drop. True or False?

10. The tighter weaving of the fibers of activated carbon fiber (ACF) in felt form may have contributed to the highest pressure drop values among the ACF types. True or False?

Sampling Efficiency of Modified 37-mm Sampling Cassettes Using Computational Fluid Dynamics

T. Renée Anthony, Darrah Sleeth and John Volckens

11. Modification of the 37-mm sampling cassettes’ inlet face that significantly reduced the sampler’s collection efficiency was:

12. The effect of “punching a larger hole” into the center of the existing 37-mm closed-face sampling cassette, while sampling at a much higher flow rate of 10 Lpm, was found to collect particles with a sampling efficiency:

Performance of Electrostatic Dust Collectors (EDCs) for Endotoxin Assessment in Homes: Effect of Mailing, Placement, Heating and Electrostatic Charge

Brita Kilburg-Basnyat, Nervana Metwali and Peter S. Thorne

13. Which of the following activities is least critical in terms of preserving a dust-spiked EDC?

14. The loss of electrostatic charge on the cloths through heat-treatment may impact the endotoxin sampling efficiency. True or False?

The Effects of Neutralized Particles on the Sampling Efficiency of Polyurethane Foam Used to Estimate the Extrathoracic Deposition Fraction

Ronald L. Tomyn, Darrah K. Sleeth, Matthew S. Thiese and Rodney R. Larson

15. According to the authors, determination of lead in blood is a reasonable surrogate to their method for estimating extrathoracic deposition. True or False?

16. A smaller number of samples makes this study more prone to type 2 error (accepting the null hypothesis when it is actually false). True or False?

Deadline for answers is March 30, 2016.

Answers will be available online on April 11, 2016.