Combustion (LECO,Eltra-CHNS) can be analyzed directly by combustion in induction or resistance furnaces without pretreatment linked to infrared detectors. Carbon, nitrogen, sulphur and hydrogen can be measured this way. Actlabs has five of these elemental analyzers.
Combustion CO2/H2O analyzer- CO2 and H2O (water of crystalization) can be measured directly by using an Eltra CO2/H2O analyzer which involves combustion at 1000 degrees C and measurement by infrared detection.
Mercury Analysis- Samples are digested with aqua regia and analyzed on a Perkin Elmer FIMS 100 mercury analyzer.