Packed column gas chromatography—capillary column gas chromatography—mass spectrometry coupling for the qualitative characterization of technical products
✍ Scribed by Dietrich Estel; Jürgen Ohl; Claus Eberhardt Döring
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 445 KB
- Volume
- 520
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract A new technique for coupling reversed‐phase liquid chromatography (RPLC) with gas chromatography is described. A fraction eluting from an RPLC column is trapped on a short column packed with polymeric adsorbent. After the mobile phase has been displaced with water, the analytes are deso
A capillary column gas chromatographic mass spectrometric method, involving the use of a deuterated analogue as internal standard, was developed and used to identify and quantify tryptamine in the rat brain. The mean level of tryptamine in rat whole brain was 0.54 pmolg-l.
The extract was filtered and the filtrate diluted with an equal volume of water. 50 ml strong solution of lead subacetate was added and the mixture centrifuged after 5 minutes. Excess lead was precipitated with 10% disodium hydrogen phosphate and the mixture again centrifuged. The supernatant was su