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  • uptake
  • Technetium Tc 99M-iminodiacetic acid complex is thought to bind to plasma proteins, mainly albumin, following intravenous administration which decreases renal excretion and increases hepatic uptake. (drugbank.ca)
  • spectra
  • Therefore, the detection in 1952 of technetium in stellar spectra provided unambiguous proof of nucleosynthesis in stars, one of the more extreme cases being R Geminorum. (wikipedia.org)
  • Current research indicate that the presence of technetium in AGB stars occurs after some evolution, and that a significant number of these stars do not exhibit the metal in their spectra. (wikipedia.org)
  • 1952
  • In 1952, astronomer Paul W. Merrill in California detected the spectral signature of technetium (specifically wavelengths of 403.1 nm, 423.8 nm, 426.2 nm, and 429.7 nm) in light from S-type red giants. (wikipedia.org)
  • decays
  • It decays by isomeric transition to technetium-99, a desirable characteristic, since the very long half-life and type of decay of technetium-99 imposes little further radiation burden on the body. (wikipedia.org)
  • This transmutation process bombards the technetium ( 99 Tc as a metal target) with neutrons , forming the short-lived 100 Tc (half-life = 16 seconds) which decays by beta decay to stable ruthenium ( 100 Ru). (wikipedia.org)
  • Chemistry
  • For this reason, the environmental chemistry of technetium is an active area of research. (wikipedia.org)
  • Based on the similarities between the chemistry of the tellurium-iodine parent-daughter pair, Tucker and Greene developed the first technetium-99m generator in 1958. (wikipedia.org)
  • half-life
  • Due to its high fission yield, relatively long half-life, and mobility in the environment, technetium-99 is one of the more significant components of nuclear waste. (wikipedia.org)
  • The long half-life of technetium-99 and its ability to form an anionic species make it (along with 129 I ) a major concern when considering long-term disposal of high-level radioactive waste. (wikipedia.org)
  • Technetium-99m's short half-life of 6 hours makes storage impossible and would make transport very expensive. (wikipedia.org)