thallium [Tl]

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Introduction

From the Greek thallos meaning green twig or shoot, because of the color of its spectral lines. Discovered in 1861 by Sir William Crookes.

Occurrence

  • sparsely but widely distributed
  • by-product of producing sulfuric acid
  • by-product of refining zinc or lead

Characteristics

  • silvery-white metal
  • resembles lead in its physical properties
  • forms Tl+1
  • toxic

Uses

Pathology

More general terms

Additional terms

References

  1. Webster's Ninth New Collegiate Dictionary, Miriam- Webster Inc. Springfield, MA 1990
  2. Chemical & Engineering News, Sept 8, 2003
  3. 3.0 3.1 Harmon J, Kapitanyan R Poisoning Clues on the Skin: 8 Cases. Medscape. March 8, 2021 https://reference.medscape.com/slideshow/poisoning-clues-6013719