Erowid.org: Erowid Reference 3279 : Dünnschichtchromatographie von illegalen LSD-Präparaten und die Möglichkeit einer Direktauswertung im Nanogrammbereich : Kraus L, Stahl E, Thies W, Arnold W

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Kraus L, Stahl E, Thies W, Arnold W. “Dünnschichtchromatographie von illegalen LSD-Präparaten und die Möglichkeit einer Direktauswertung im Nanogrammbereich”. Planta Med.. 1977;32A(1):24. <a name="ref">Kraus L, Stahl E, Thies W, Arnold W.</a> <a href="/references/3279">"Dünnschichtchromatographie von illegalen LSD-Präparaten und die Möglichkeit einer Direktauswertung im Nanogrammbereich"</a> <i>Planta Med.</i>. 1977;32A(1):24.
Text Abstract (this page) Unknown - English (33 K) Show Articles by Kraus L Stahl E Thies W Arnold W Article IDs LSDID: 3030 Erowid RefID: 3279 PubMedID: unknown Collections Hofmann Collection MDMA Collection All References	Abstract A TLC method for the determination of nanogram quantities of LSD in illegal preparations is described. Lysergic acid derivatives were isolated from various dispensation forms (felt, blotting paper, cigarette paper, sugar) by means of a micro-column. Conditions for the separation were optimized using a pH-gradient layer and isopartitive solvents, first for conventional layers and then for application to nano-TLC-plates. A neutral solvent mixture consisting of methanol and chloroform gave the best results Detection limit was 1 ng and direct quantitation at 410 nm was possible in the range 5-10 ng with a relative standard deviation of 2-4%. Statistical evaluation was carried out on 100 different 'felt-trips' of a confiscated batch.
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