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In the laboratory analysis of so-called transition metals are carried out regularly. Part of this group are those elements in the periodic table whose atoms have a partially with electrons filled d-cup. They generally have a high density and a high melting point as well as magnetic properties. These special metals are characterized by various properties such as the changing colors of the compounds. Further they are good catalysts and are able to exist in many different oxidation states. The easy change of the oxidation state and a pronounced tendency to form complex compounds make some transition metals an important element in major catalyst systems, e.g. iron acts as a catalyst in the Haber-Bosch process for the synthesis of ammonia.
A chelate is a compound of a mineral or a metal (lead, mercury, copper, arsenic, aluminum, calcium, etc.) and another substance. These chemical compounds are capable of binding multivalent metal ions and form soluble complexes which can be used for the removal of metal ions from poisoned tissues. Specifically chelates can be used for additional therapy treatment of poisoning with lead or iron.
Ion chromatography (IC) is a chromatographic method where substances can be separated according to their charge. Here, the mobile phase is transported by a pump through the entire system. The sample is first injected, after opening the valve the sample is transported to the separation system by the mobile phase. The most important component of the ion chromatographic system is the analytical column. The carrier materials are usually quartz glass (coated), ethylene-tetrafluoroethylene (ETFE), epoxy resins, divinylbenzene polymers or polyetheretherketone (PEEK).