Spectrophotometric determination of tellurium(IV) in environmental and telluride film samples

Uncommon Heavy Metals, Metalloids and Their Plant Toxicity: A Review

“…Tellurium expressively affects human health. The remains of tellurium(IV) are found in water, sediment, and soil, as well as in plants (Moya et al, 2001;Suvardhan et al, 2007), and was also found in milk samples (Rodenas-Torralba et al, 2004). Tellurium up-take, transport, and metabolism are still unknown, but can probably be connected with sulphur or selenium.…”

Uncommon heavy metals, metalloids and their plant toxicity: a review

“…Tellurium expressively affects human health. Remains of tellurium(IV) are found in waters, sediments, soils, as well as in plants (Moya et al 2001;Suvardhan et al 2007), and was also found in milk samples (Rodenas-Torralba et al 2004). Tellurium uptake, transport and metabolism is still unknown, but can be probably connected with sulphur or selenium.…”

Determination of Tellurium in Tellurium-Containing Organic Compounds by Microwave Plasma-Atomic Emission Spectrometry

“…The increased interest in this field is due to widely use of these substances as catalysts in organic reactions (e.g., rubber vulcanization), inhibitors of metal corrosion, insecticides, fungicides, components of special photographic materials, pharmaceuticals etc [1][2][3][4][5]. In view of great practical importance of these compounds for science and technology, a large number of analytical methods for the determination of tellurium in various objects were developed: gravimetric methods based on the precipitation of elemental tellurium by treating with inorganic and organic reducing agents, [6][7][8]; titrimetric methods based on redox reactions using iodide-anion, salts of iron(II), chromium(II) or titanium(III) as reducing agents, as well as potassium permanganate or dichromate as oxidizing agents for Te (IV), [9][10][11]; electrochemical methods, which allow one to determine the tellurium and selenium at simultaneous presence with a sensitivity being 10 -5 M, [12][13][14]; spectrophotometric methods based on the formation of complexes with sulfur-containing organic reagents (diethyldithiocarbamate, thiurea, and their derivatives, bismuthiol II, and so on [15,16] or on the formation of ion pairs of tellurium acido complexes with organic bases-pyrazolone derivatives and rhodamine dyes [17][18][19]. Three spectrophotometric methods were used to determine small tellurium content in the environment (water, plant material, soil), and thin telluride films [20].…”