A few examples of questions:
1. Which option is correct for liquid handling containers?
A) These containers are very similar to gas containers
B) In these devices, for sampling, the container is halved from the water, then the valves are opened in the working environment and with the exit of the liquid, the air containing the contaminant enters the container.
C) This method is for liquid-soluble contaminants (usually water)
D) By increasing the rate of pollutant release, these devices can also be used for long-term sampling.
2. Which option is not correct for long-term sampling?
A) In the long-term method, air is passed through the adsorbent medium and gas or vapor contaminants are extracted and concentrated from the air.
B) Concentration can be done by dissolving or reacting with the adsorbent or adsorbing on the liquid adsorbent
C) The efficiency of this method is lower than Grubb method. The devices used in this method perform sampling through two mechanisms of absorption (Absorption) or surface adsorption (Adsorption).
D) All cases
