The two-cold-scrubber collection system was used for collecting VOC emission.
Scrubbers were chilled in a cooler bath to approximately 5°C. The first scrubber contained
100-ml of fresh distilled water and the second contained 150-ml of methylene chloride. Using
a vacuum oil pump, VOC emissions were pulled out from the microwave oven and absorbed
in the two scrubbers. Gas Chromatography/ Mass Spectrometry (GC/MS) was used to
analyze emissions. After drying was completed, a 20-ml solution was taken from the first
scrubber for determination of low molecular weight (LMw) compounds in the VOC
emissions. The remaining solution was combined with methlene chloride solution from the
second scrubber and then was extracted in a separator funnel. The combined solution was
extracted twice with 30-ml methylene chloride. The methylene chloride extracted solution
was used for the determination of chemical compounds released during drying. Gas
Chromatography/ Mass Spectrometry (GC/MS) was used to analyze chemical compounds.
For the control, VOC emission was collected and analyzed using air drying method under
room temperature.