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Eastern Analytical Symposium (EAS)


The Eastern Analytical Symposium (EAS) ( is a yearly conference on analytical instrumentation and supplies.

Archive of Publications

Scientific Instrument Services presented the following lectures and posters at the 1995 EAS meeting at the Garden State Convention Center in Somerset, NJ, November 12-17, 1995.

  • "Selection and Use of Adsorbent Resins for Purge and Trap Thermal Desorption Applications" Poster Presentation #165 by John J. Manura. Tuesday, November 14, 1995 at 10:00.
  • "Identification of Volatile Organic Compounds in a New Automobile" Poster Presentation # by Santford V. Overton. Wednesday, November 15, 1995 at 10:00.
  • "Volatile Organic Emissions from Automobile Tires." Poster Presentation # by Santford V. Overton & John J. Manura. Wednesday, November 15, 1995 at 10:00.
  • "Volatile Organic Composition in Cranberry". Poster Presentation # by Santford V. Overton & John J. Manura. Wednesday, November 15, 1995 at 10:00.
  • "Detection and Identification of Volatiles in Latex Paints by Headspace GC with On Column Cryo-Trapping." Poster Presentation # 167 by John J. Manura. Tuesday, November 14, 1995 at 10:00.

    Large gas volumes from GC introduction techniques such as headspace and thermal desorption can be introduced into a capillary GC column for subsequent analysis. This is accomplished with the use of a GC Cryo-Trap which permits the concentration and focusing of volatiles at the head of the GC capillary column from sample gas volumes ranging in size from 0.1 to more than 100 mL. The resulting GC chromatogram produces sharp well resolved peaks.
    One to 5.0 gram sample sizes of latex (water base) paints were weighed into 10 mL headspace sample vials and sealed. The vials were then heated to 900 deg C and agitated for 10 minutes. Headspace volumes from 0.1 to 8.0 mL were injected in the GC injection port slowly (1.5 mL/min) utilizing the LEAP Headspace autosampler and cryo focused at the front of the GC capillary column using a GC Cryo-Trap. Liquid nitrogen is used to trap volatiles at temperatures down to -180 deg. C. After the injection was complete and the injection port flushed of all volatiles, the cryo-trap was heated to 200 deg C to release the trapped organics and the GC oven was temperature programmed to chromatograph the volatile organics. A DB5-MS capillary column (0.25 mm x 0.25u film thickness x 60 meters) was used for the analysis. A HP MSD (Model 5971) detector was used in the El mode to detect and identify the compounds eluted off the capillary column. The mass spec was scanned from 25 to 350 daltons throughout the entire GC run. For each of the latex paints analyzed, 50 to 100 organic compounds were detected and identified by the mass spectrometer. Depending on the manufacturer there were significant variations in the composition of the latex paints. The technique has proven to be a useful technique for the identification of the volatiles present in latex paints, for use as a quality control technique and for the comparison of paints from different manufacturers.


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