ohs 301 exam 3 questions with complete
solutions
NIOSH Manual of Analytical Methods (NMAM) - correct answer ✔✔over 300 methods to collect and
analyze samples
Personal VS. Area Sampling - correct answer ✔✔personal in breathing zone (only accepted one in
compliance evaluations)
area in fixed location
active sampling - correct answer ✔✔Using a mechanical pump, fan, syringe, or other device to draw an
environmental sample into a collection medium or vessel for the purpose of capturing an agent.
passive sampling - correct answer ✔✔relies on the natural diffusive energy of molecules to move them
to sampling media
Breathing Zone - correct answer ✔✔circle around top of head, shoulders and mid chest
desirable air sampling pump qualities - correct answer ✔✔flow- L/min or mL/min
constant flow rate
rechargable
intrinsically safe
calibrated within 5% of recommended flow rate
breakthrough - correct answer ✔✔possible sample lost
mass of back >5% of front
adsorption
temp, humidity, interfance, concentration
solutions
NIOSH Manual of Analytical Methods (NMAM) - correct answer ✔✔over 300 methods to collect and
analyze samples
Personal VS. Area Sampling - correct answer ✔✔personal in breathing zone (only accepted one in
compliance evaluations)
area in fixed location
active sampling - correct answer ✔✔Using a mechanical pump, fan, syringe, or other device to draw an
environmental sample into a collection medium or vessel for the purpose of capturing an agent.
passive sampling - correct answer ✔✔relies on the natural diffusive energy of molecules to move them
to sampling media
Breathing Zone - correct answer ✔✔circle around top of head, shoulders and mid chest
desirable air sampling pump qualities - correct answer ✔✔flow- L/min or mL/min
constant flow rate
rechargable
intrinsically safe
calibrated within 5% of recommended flow rate
breakthrough - correct answer ✔✔possible sample lost
mass of back >5% of front
adsorption
temp, humidity, interfance, concentration
