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Case Studies

Quality Analysis of Printed Circuit Boards

Printed circuit boards (PCBs) and 1206 sized components were placed in a hot chamber at 255 oC for 2.5 minutes and off-gassing chemicals were trapped by Tenax molecular sieve/ cyrotrap with liquid nitrogen. Chemical identities were determined by gas chromatography/ mass spectrometry. The most striking difference between printed circuit boards...

Measurement of Organic Impurities in Water

Approximately 10g of liquid sample (sample A, B, C, D, E, F, G, H, I and J) were placed in 40mL clear vials and limonene was extracted using SBSE, or Twister, at room temperature for 90min. Twisters were heated to 280oC for 3 minutes inside a thermal desorption unit (TDU)....

Measurement of volatiles from Applied Skin Lotions

The objective for this project was to determine what compounds were uniquely generated from skin treated with lotion. Samples (conditioned Twister bars exposed to skin headspace) were received from Unilever and stored under refrigeration until analyzed by a GC-MSD equipped with Gerstel components including: MPS2, TDU, CIS, and MACH. Twister...

Quality Analysis of Plastics

Thirteen samples were analyzed in triplicate by placing approximately 23 mg of shaved PET pellet into a Gerstel microvial that was placed into a TDU tube and heated to 280oC for 5 minutes inside a thermal desorption unit (TDU). The TDU transfer temp was 300oC and operated in splitless mode....

Identification of Off-Odors in Corrugated

Organoleptic assessment revealed overall aroma intensity of the suspect corrugated was similar in character, but stronger than normal. Upon headspace volatile extraction with a proprietary device equipped with thermal desorption tubes, and analysis by GC-MS/O, and GC-MS, it was determined there were 3 furan species extracted from suspect corrugated sample...
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