Emission of organic solvents during technological processes

5 EMISSION OF ORGANIC SOLVENTS DURING TECHNOLOGICAL PROCESSES 

The concentration of substances emitted to the air during the degreasing processes reached the steady-state constant value  

The value C ean be measured, but a value for q is difficult to estimate, because it in-eludes meehanieal and gravitational ventilation (central air conditioning, influence of open doors, windows, fans and natural ventilation). 

When the process of degreasing ends, the decay of concentration can be described by  

The quantity emitted to a room of known volume depends only on the changes of concentration at time (t). 

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PREDICTION OF ORGANIC SOLVENTS EMISSION DURING TECHNOLOGICAL PROCESSES... 

Clean Air Act Amendments. The CAA define the components of an ink formula that are regarded as volatile organic compounds (V OCs). Emissions from ink formulations during the printing process are still considered to be a significant source of air pollution. This regulation continues to be the principal impetus to the introduction of ink technologies that offer alternatives to traditional solvent-based ink chemistries. 

One issue with liquid stabilisers is the emission of volatile components (phenol from the organophosphite, solvent, etc.) during processing and from the end use application, e.g., floor and wall coverings. Analytical techniques are now available to detect volatile organic compounds (VOCs) (151) and so influence stabiliser development. New organophosphite-zinc technology has also been introduced to improve this characteristic (75). 

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