Adsorption/thermal desorption with small cartridges for the determination of trace aqueous semivolatile organic compounds
Journal Article
·
· Anal. Chem.; (United States)
Adsorption/thermal desorption (ATD) with small bed volume (0.68 cm/sup 3/) Tenax cartridges and direct desorption to a fused-silica capillary gas chromatography column has been studied for the determination of a wide range of semivolatile compounds in water. Recoveries were determined for a 5 min, 250/sup 0/C desorption step alone, as well as for the complete ATD method. Desorption recoveries near 100% were found for a variety of phenols and other monocyclic aromatics, polycyclic aromatic hydrocarbons (PAHs) up to 1-methylphenanthrene, pesticides up to dieldrin, phthalates up to diethyl phthalate, and alkanes up to tricosane (C/sub 23/). Most phenols were not recovered will in the full ATD method studies. Virtually all other compounds studied, including nonphenolic monocyclic aromatics, PAHs, pesticides, and several alkanes were recovered well. Even compounds such as pyrene, butyl benzyl phthalate, and p,p'-DDE (1,1'-(dichloroethenylidene)bis(4-chlorobenzene)), which were not 100% recovered in the short 5-min desorption step alone, gave full ATD method recoveries near 100%; during the aqueous-phase sampling step, these compounds sorbed near the sample inlet end of the bed, facilitating recovery by thermal desorption.
- Research Organization:
- Oregon Graduate Center, Beaverton
- OSTI ID:
- 5649215
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 60:1; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AQUEOUS SOLUTIONS
BLOOD VESSELS
BODY
CAPILLARIES
CARDIOVASCULAR SYSTEM
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
DESORPTION
DISPERSIONS
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
INFORMATION
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANS
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
SORPTION
TRACE AMOUNTS
WATER
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AQUEOUS SOLUTIONS
BLOOD VESSELS
BODY
CAPILLARIES
CARDIOVASCULAR SYSTEM
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
DESORPTION
DISPERSIONS
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
INFORMATION
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANS
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
SORPTION
TRACE AMOUNTS
WATER