thallium

Noun

Meaning

A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.

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Examples

Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production. Source: Internet

At later stage of the treatment additional potassium is used to mobilize thallium from the tissue. Source: Internet

Another application of thallium doping is the sodium iodide crystals in gamma radiation detection devices. Source: Internet

As both scientists discovered thallium independently and a large part of the work, especially the isolation of the metallic thallium was done by Lamy, Crookes tried to secure his priority on the work. Source: Internet

Crookes' attention had been attracted to the vacuum balance in the course of his research into thallium. Source: Internet

In these, the sodium iodide crystals are doped with a small amount of thallium to improve their efficiency as scintillation generators. citation Some of the electrodes in dissolved oxygen analyzers contain thallium. Source: Internet

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