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| A common technique for sampling organic solvents in workplace air is the use of preconcentration of vapors on adsorbents. The most widely used adsorbent is activated carbon, due to its large sampling capacity. After desorption (thermal or displacement by other solvents such as carbon disulfide), analysis is made by gas chromatography. In order to avoid breakthrough, the collected amount is usually <10% of the maximum capacity (total pore volume). |
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