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- For nonchromatographic
Stream Monitoring Applications
- Thermal Modulation
of gas samples for Lower Detection limits
- Fit up to 4
Enrichment Coils in an 8610C Column Oven or on a Model 110 Detector
Chassis
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| Enrichment
Coils use thermal modulation to enrich gas samples for quantifiable peaks.
Consisting of a length of resistively heated wide bore capillary column,
they can be used in a GC column oven or on a Model 110 detector chassis
for nonchromatographic stream monitoring applications. Thermal modulation
causes many analytes like toluene to adsorb on the enrichment coil unti
lit is saturated and reaches equilibrium, usually a matter of seconds. Upon
heating, the analytes desorb from the enrichment coil, producing a peak
which can be easily measured, rather than a barely discernible shift in
baseline level. |
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| The chromatograms
below show a nonchromatographic monitoring of a gas stream. In the first
chromatogram, a slight baseline shift is the only clue that the concentration
of the stream has changed. With the enrichment coil, the shift between 1ppm
and 2ppm concentrations becomes obvious. |
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8690-0091
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Enrichment
Coil
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£728.00
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