Exact Mass: 204.97441
Exact Mass Matches: 204.97441
Found 8 metabolites which its exact mass value is equals to given mass value 204.97441,
within given mass tolerance error 0.0002 dalton. Try search metabolite list with more accurate mass tolerance error
4.0E-5 dalton.
Thallium
Thallium, also known as 81tl or talio, is a member of the class of compounds known as homogeneous post-transition metal compounds. Homogeneous post-transition metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a post-transition metal atom. Thallium can be found in a number of food items such as turnip, romaine lettuce, red beetroot, and sunburst squash (pattypan squash), which makes thallium a potential biomarker for the consumption of these food products. Thallium is a chemical element with symbol Tl and atomic number 81. This soft gray post-transition metal is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production. Both used the newly developed method of flame spectroscopy, in which thallium produces a notable green spectral line. Thallium, from Greek θαλλός, thallós, meaning "a green shoot or twig," was named by Crookes. It was isolated by both Lamy and Crookes in 1862; Lamy by electrolysis and Crookes by precipitation and melting of the resultant powder. Crookes exhibited it as a powder precipitated by zinc at the International exhibition which opened on 1 May, that year .