innovations in chemical detection
Flame Thermionic Ionization (FTIO) - Samples are decomposed in a self-sustained
Hydrogen-Air or Hydrogen-Methane-Air flame, and the neutral decomposition products are
re-ionized and detected by a thermionic ion source and collector located well downstream
of the flame.
Catalytic Combustion Ionization (CCIO) - Hydrocarbon and Fatty Acid Methyl Ester (FAME)
compounds containing large concentrations of CH2 functional groups are selectively
detected by forming momentary bursts of flame ignition as each compound impacts a hot
catalytic ceramic surface in a detector environment containing Oxygen.
Tandem Thermionic or Thermionic/Flame Ionization (Tandem TID, Tandem TID/FlO) - Two
different detector stages are combined in series, and many different combinations are
possible depending on the choices of ionizing elements and detector gases used in each
stage. In some cases, the fi rst detection stage is non-destructive, while in other cases, a
destructive process in the fi rst stage may be used to generate decomposition products that
are then detected in the second stage.
Reactor Thermionic Ionization Analysis (RTIA) - In an non-GC implementation of thermionic
detection, a thermionic ionization transducer is preceded by a heated reactor chamber. The
transducer detects selective vapors thermally evolved from liquid or solid samples heated
in the reactor. When the gas flowing throught the reactor and transducer is Air or Oxygen,
detected vapors include volatilized sample constituents as well as products of oxidation of
the sample constituents.
INTERCHANGEABLE IONSOURCEELEMENT CHOICES:
T10-2(BlackCeramic) - selectiveNPOdetectionwith.negligible tailing of Ppeaks;
TIO-4 (WhiteCeramic) - selective NPOdetectionwith the best possibleN response;
T10-1 (Very White Ceramic) - selective detection of Oxygenates, Nitro compounds, some
Halogenates, Pyrrole versus Pyridine functional groups, and Methylene groups in linear
chain Hydrocarbons and FattyAcid Methyl Ester (FAME) compounds;
TIO-3 (WhiteCeramic) - selective detection of volatile Halogenates like Trihalomethanes;
TIO-5 (BlackCeramic) - selective detection ofBr and I compounds with suppressedCI;
T10-6 (BlueGray Ceramic) - selective detection ofP compounds with suppressed N;
T10-7 (NEWGreen Black Ceramic)- selective detection of Halogenates like PCBs;
CFIO(Black Ceramic) - used with the Remote FlOmode for selective detection of P, Pb, Sn,
orSi compounds;
FlO Probe (Uncoated Bare Wire) - used as flame ignitor/polarizer for universal FlO
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