Trace Organic Analysis of Microencapsulated Materials
Abstract
The major goal of this task is the development of analytical systems and/or methodologies to detect/identify/quantitate trace organic chemical species in complex microencapsulated mixtures. To accomplish this goal, the approach is based on sample processing, concentration, separation, detection/ identification, and data manipulation/processing. Specific objectives were: 1) Develop current awareness of the extensive microencapsulation research and technology base; 2) Provide detection and characterization of microcapsules with their chemical/physical microstructure; 3) Establish detection and identification schemes for signature analysis and classification of core/shell formulated products, including thickeners, additives, and carriers; 4) Determine the quantitative amounts of microcapsule samples (milligrams) at trace parts per million, parts per billion levels; 5) Encode information in an applied artificial intelligence format. Four analytical instrumental systems were assembled to examine microencapsulated materials: System 1 - Pyrolysis atmospheric pressure chemical ionization (APCI) tandem mass spectrometer; System 2 - Pyrolysis/concentrator interfaced to GC-MS and GC-MS/MS units; System 3 - GC interfaced to Fourier transform infrared (FTIR) spectrometer; System 4 - Supercritical fluid chromatograph for extraction, desorption, reaction and chromatography. (aw)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1989
- Accession Number
- ADA216847
Entities
People
- A. P. Snyder
- Dennis J. Reutter
- Leon J. Schiff
- Michael B. Wasserman
- Shirley A. Liebman