PRACTICAL SKILLS ON THE TOPIC. SAMPLING OF AIR AND WORKPLACE AIR FOR LABORATORY

RESEARCH

PURPOSE:

Air sampling for laboratory tests carried out under the control of working conditions at work sites, as well as in monitoring air quality

: EQUIPMENT NEEDED

Aspirator with rotameter

Absorption devices

gas pipette

: THE ALGORITHM STEPS

A) sampling method of aspiration

1 -Podgotovit absorption solution, pour it into the absorption bottle in series.

2 Connect the absorption device with an aspirator.

3 Place the system in the breathing zone of the working (or at the point under the settlement.)

4 Pull through the absorption solution required volume of air (depending on the nature of the substance and the expected level of air pollution) In one place sequentially selected 5 samples.

5 When sampling air simultaneously to determine the temperature, humidity and air velocity.

6 Check the accompanying document (where and when sampled, the volume of air stretched for which studies sent to the laboratory, sampling of atmospheric vozduha- weather conditions at the time of sampling.)

7 Send the sample to the laboratory.

B. A VACUUM SAMPLING METHOD (USING GAS PIPETTES)

. 1 Fill the gas pipette water.

2 in the test site of a pipette to pour water (instead of water in the pipette gets analyzed air) to close the gas valve pipette (to clamp or clamps).

3 Check the accompanying document and send samples to the laboratory