Determine aromatic hydrocarbons:

 The analysis of aromatic hydrocarbons within the industrial environment is done through following under mentioned steps.

i) Organic vapours are collected on a charcoal adsorbent using a portable pump.

ii) Desorption from charcoal is finished in a closed vial along with carbon disulfide.

iii) The analysis is complete using a gas chromatograph.

The common needs of an injection port area in which it should be able to manage it at constant temperature. It should have low volume capacity and made of material that is quite inert to different substances.