This question is from an industrial hygiene class. copper fume (welding) 0.1 mg/m3 (OSHA 8-hour TWA)

Calculate the minimum sampling time you will require to be able to detect concentrations at the OELs listed in the table. Show your work in calculating the sampling times.

Using some methods in NIOSH 7302

I'm looking for help in finding the minimum sampling time and what formula is used to identify it. My assignment is past due but I'm at a block where I can not find the necessary information.

answer: d is correct

when in a crucial situation, after calling 911, the correct posture for delivering effective compression is the proper hand placement.

first, place two fingers at the sternum, then put the heel of your other hand next to the fingers and place hand on top of the other. lock your elbows by using your body’s weight and compress the victim’s chest with a depth of 2 inches.

moreover, do 15 compression and 2 breaths, this process must be done four times until there is a pulse or a arrive.

the right answer is: time