Topics - Graphite
Graphite is an allotropic form of carbon. In chromatography, graphite is sometimes used as weak adsorbent in gas solid chromatography exhibiting largely dispersive interactivity. Some polar interactivity is often present due to heavy metal salts being present in the graphite. Natural graphite can have 15% of inorganic ash residues (or even more). Graphite is chemically, relatively inert and is used in a compressed matrix to form ferules for connecting fused silica capillary columns to valves, detectors etc.