Schaltungsanordnung zur Betriebsueberwachung eines Flammenionisations-Detektors und Verfahren hierfuer

The invention relates to a switch setup for the monitoring of the flame of a flame ionization detector for gas chromatographs. According to the invention, the detector voltage of the flame ionization detector passes via an amplifier to a comparator and, depending on an evaluation result produced by the comparator, is routed via a timer to a switching unit to end an automatic sample injection in case the detector voltage drops below the voltage threshold value for a specific period of time. The invention can be used for gas chromatography equipment

Two stage derivatization with N-/tert.-butyldimethylsilyl/- N-methyl-trifluoroacetamide -MTBSTFA- and N-methyl-bis-/trifluoroacetamide/ -MBTFA- for the gas-chromatographic analysis of OH-, SH- and NH-compounds

Various alcohols, thiols, phenols, carboxylic acids, amines and amides were subjected to silylation with MTBSTFA followed by trifluoroacetylation with MBTFA. The reaction products have been identified and quantified by means of gas chromatography coupled with atomic emission and mass spectrometric detection

Vergleichsmessungen der Volatilitaet im offenen System

SIGLETIB: RN 8908 (84-066,2) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Analytik chemischer Kampfstoffe in Ruestungsaltlasten. T. 1 und 2 Kampfstoffanalytik in Wasser und Bodenluft. Kampfstoffanalytik im Boden. Abschlussbericht

SIGLEAvailable from TIB Hannover: F94B1688 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekNiedersaechsisches Umweltministerium, Hannover (Germany); Ministerium fuer Umwelt, Raumordnung und Landwirtschaft des Landes Nordrhein-Westfalen, Duesseldorf (Germany)DEGerman