Modification of a packed column gas chromatograph/mass spectrometer |
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Authors: | Tan Y L Quanci J F |
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Institution: | Environmental Measurements Laboratory, U.S. Department of Energy, New York, New York 10014, U.S.A. |
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Abstract: | A packed-column gas-chromatograph/mass-spectrometer (GC/MS), Hewlett-Packard 5982, was modified to accommodate fused silica capillary columns. The original GC/MS interface and chemical-ionization sample-line in the ion-source were changed to allow the end of a fused silica capillary column to enter the ion-chamber directly. For chemical-ionization operation, the reagent gas was brought into the MS through the direct-insertion probe port. The calibration compound was introduced through the electron-impact sample-inlet, which simplified the operation. The modified system yields higher sensitivity and more efficient separation, as well as simpler operation, without sacrificing any original instrument functions. |
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Keywords: | Author for correspondence |
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