Breaching the parts per quadrillion wall in analysis of semivolatile organics
- J.T. Baker Inc., Phillipsburg, NJ (United States)
Analyte enrichments in US Environmental Protection Agency (EPA) methods for environmental pollutants are generally performed using sample preparation techniques such as liquid-liquid extraction, liquid-solid extraction and purge & trap dynamic headspace concentration. The recent development of Solid Phase Microextraction (SPME) has provided another alternative which efficiently extracts organic analytes present in air or aqueous samples. We have successfully developed a unique sample preparation method which combines the power/advantages of Solid Phase Microextraction and standard EPA methodology. Subsequent analysis results in successful detection of ultratrace organic compounds with excellent sensitivity. EPA 525, 625, 8270 semivolatile organic compound have been successfully determined using Gas Chromatography/ Mass Spectrometry (GC/MC) at sub-parts per billion (ppb) levels. EPA 608, 8080 halogenated pesticides have also been readily detected with Electron Capture Detector (ECD) at parts per quadrillion (ppq) levels.
- OSTI ID:
- 126102
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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