"The Action Level!®"
— Current Quiz

Edited by J. Thomas Pierce, PhD, CIH (1980-2012), DABT (Retired)

“The Action Level!®, a self-study, continuing education program, provides a convenient and interesting opportunity for individuals to expand their knowledge in relevant areas of industrial hygiene, as well as occupational and environmental safety and health. The program is approved by both the Global EHS Credentialing®, and the Board of Certified Safety Professionals, which award Certification Maintenance (CM) points and recertification points, respectively, for successful participation.

Participants must read each issue of the Journal, answer “The Action Level!® questions, and return the completed answer sheet at the end of that issue’s “The Action Level!® column. To earn the designated credit, an average score of 70 percent or better is required within a 12-month period. Certified Industrial Hygienists and Certified Associate Industrial Hygienists may earn up to 12 contact hours per year. Certified Safety Professionals may earn up to 1.2 recertification points per year.

Credit is awarded only four times each year—in March, June, September, and December—to participants who score an average of 70 percent or better within each three-month quarter. To earn credit in any quarter, participants must satisfactorily complete answer sheets for all three months of that quarter.

The program is based on a calendar year and subscriptions running from January 1 to December 31 are available to participate in
 “The Action Level!® program. New participants in the program can enroll at any time, but their enrollment fees will be prorated by the number of quarters they are eligible to participate. 

To enroll, click here, read about the program and click on “register” to complete your registration. The cost is complimentary to ACGIH® members; $219 for AIHA members; and $249 for nonmembers for one calendar year running January 1 to December 31. Prorations are available for new participants who purchase after January 31. Nonmembers are encouraged to become members to take advantage of the member discount. For more information regarding ACGIH® membership, call 513-742-2020, or apply online.  

This continuing education program fee is separate from the Journal subscription cost. The fee covers administration costs, and is nonrefundable. 

Answers must be received by the date listed at the end of each quiz.

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June 2020 — Volume 17 No 6

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Laboratory Evaluation of a Personal Aethalometer for Assessing Airborne Carbon Nanotube Exposures

Patrick O’Shaughnessy, Adrianne Stoltenberg, Craig Holder, and Ralph Altmaier


2. Aethalometers measure black carbon in the atmosphere by measuring:

Design and Performance of UPAS Inlets for Respirable and Thoracic Mass Sampling

David Leith, Christian L’Orange, John Mehaffy, and John Volckens

3. The standard for size-selective sampling of PM10 is similar to that for Thoracic PM. True or False?

4. What particle size distribution properties will produce the most error when sampled by the UPAS respirable cyclone?

Evaluation and Updates to the Leggett Model for Pharmacokinetic Modeling of Exposure to Lead in the Workplace – Part I Adjustments to the Adult Systemic Model

Kathleen L. Vork and James C. Carlisle

5. The initial distribution of lead in the body depends on the dose absorbed to blood. However, over time lead in the blood comes from both current and past exposures because:

6. Historically the rise and fall of blood lead levels (BLLs) relevant to the standard setting process has been assessed with the help of a pharmacokinetic model. After selecting from a pool of available models, several steps were taken to check and adjust the chosen model. How was the Hattis data used? Select all that apply.

The American Board of Industrial Hygiene: 60 Years of Progress

Michael D. Larrañaga, Nicole M. H. Greeson, and David C. Roskelley

7. In 2020, the ABIH mission was modified to include the word(s):

8. To determine passing scores on the CIH exam by independently assessing the difficulty of each question to develop a composite percentage of consensus scores for all test questions, ABIH employs the following standard setting method:

Aerodynamic Size Separation of Glass Fiber Aerosol

Taekhee Lee, Bon Ki Ku, Rachel Walker, Pramod Kulkarni, Teresa Barone, and Steven Mischler

9. Which of the following is not downstream of the vortex shaker?

10. This work focused on separating airborne glass fibers using an aerosol counter prior to the classification of spherical particles. True or False?

Prevalence of Bovine Leukemia Virus (BLV) and Bovine Adenovirus (BAdV) Genomes among Air and Surface Samples in Dairy Production

Agata Stobnicka-Kupiec, Małgorzata Gołofit-Szymczak, Rafał L. Gómy, and Marcin Cyprowski

11. The purpose of sample pretreatment with ethidium monoazide or ethidium bromide would likely include determination of viability. True or False?

12. Neutralizing the nucleic acids from dead organisms could potentially distinguish viral nucleic acids arising from potentially infectious viral particles. True or False?

Deadline for answers is June 30, 2020.

Answers will be available online on July 10, 2020.