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  • Thallium - an overview ScienceDirect Topics

    Thallium. Thallium has effects on tissues in addition to those related to potassium transport: it uncouples oxidative phosphorylation (Melnick et al., 1976), adversely affects protein synthesis (Hultin and Näslund, 1974), and inhibits a number of enzymes, including alkaline

  • Thallium - Wikipedia

    OverviewCharacteristicsCompoundsHistoryOccurrence and productionApplicationsToxicitySee also

    Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that 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

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  • Thallium poisoning - Wikipedia

    Thallium poisoning is poisoning due to thallium and its compounds which are often highly toxic. Contact with skin is dangerous, and adequate ventilation should be provided when melting this metal. Many thallium(I) compounds are highly soluble in water and are readily absorbed through the skin. [citation needed] Exposure to them should not exceed 0.1 mg per m 2 of skin in an 8-hour time ...

  • Specialty: Toxicology
  • Thallium toxicity in humans.

    Thallium is considered a cumulative poison that can cause adverse health effects and degenerative changes in many organs. The effects are the most severe in the nervous system. The exact mechanism of thallium toxicity still remains unknown, although impaired glutathione metabolism, oxidative stress, and disruption of potassium-regulated ...

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  • Thallous Chloride - FDA prescribing information, side ...

    Nov 04, 2015  Thallous Chloride Tl 201 Injection is a diagnostic radiopharmaceutical indicated for. ... Thallium Tl-201, with a physical half-life of 72.9 hours, decays by electron capture to mercury Hg-201. ... Mechanism of Action. Thallous Chloride Tl 201 with no carrier added accumulates in viable myocardium in a manner analogous to that of potassium ...

  • Myocardial Perfusion Imaging with 201 Tl

    Mar 01, 2010  Abstract. The object of this review is to provide information about 201 Tl-thallous chloride in radionuclide myocardial perfusion imaging. This technique has experienced a recent resurgence because of the shortage of 99m Tc. After reading this article, the technologist will be able to describe the properties and uptake mechanism of 201 Tl, the procedure for myocardial perfusion imaging with ...

  • Myocardial Perfusion Imaging with 201 Tl

    Abstract. The object of this review is to provide information about 201 Tl-thallous chloride in radionuclide myocardial perfusion imaging. This technique has experienced a recent resurgence because of the shortage of 99m Tc. After reading this article, the technologist will be able to describe the properties and uptake mechanism of 201 Tl, the procedure for myocardial perfusion imaging with ...

  • (PDF) Thallium Toxicity in Humans - ResearchGate

    There were significant correlations between duration of illicit opioid use and urine thallium concentrations ( r = 0.394, p = 0.005) and hair thallium concentrations ( r = 0.293, p = 0.039), but ...

  • Thallium - an overview ScienceDirect Topics

    Thallium β-diketonato complexes [Tl{CH{C(O)R} 2}] (R = Me, Ph) react with an excess of CS 2 to give 1,1-ethylenedithiolato complexes of thallium(I). 740 A volatile chelate (2,2,6,6-tetramethyl-3,5-heptanedionato)thallium(I) has been described. 741 This thallium adduct in CF 2 Cl 2 /O 2 and CF 3 Br/O 2 gas mixtures has been used under CVD ...

  • Thallium Chloride Tl 201 - an overview ScienceDirect Topics

    Suresh K. Mukherji, Minerva Becker, in Oncologic Imaging, 2002. Thallium Chloride Tl 201. Investigators have attempted to evaluate the role of thallium chloride Tl 201 single photon emission computed tomography (SPECT) for imaging SCCA of the extracranial head and neck. Thallium uptake is normally present in squamous cell carcinomas of the upper aerodigestive tract that have volumes

  • Thallium exists in opioid poisoned patients

    Aug 01, 2015  Thallium (Tl) is a toxic heavy metal that exists in nature. Tl poisoning (thallotoxicosis) may occur in opioid addicts. This study was designed to evaluate the frequency and level of urinary Tl in opioid abusers. In addition, clinical findings were evaluated.A ...

  • Effects and mechanisms of mineral amendment on thallium ...

    1. Introduction. Thallium (Tl) is a highly toxic element with its acute and chronic toxicity higher than mercury, lead or cadmium (Liu et al., 2019d; Liu et al., 2019e; Peter and Viraraghavan, 2005).Thallium typically exists in the form of Tl + and Tl 3+ in the environment (Nriagu, 1998; Wei et al., 2020).As a typical rare and dispersed element, Tl generally occurs in the natural environment ...

  • Hyperaccumulation and transport mechanism of thallium and ...

    Both thallium (Tl) and arsenic (As) bear severe toxicity. Brake fern (Pteris vittata L.) is well-known for its hyperaccumulation capacity of As, yet its role on Tl accumulation remains unknown.Herein, brake ferns growing near an As tailing site in Yunnan, Southwestern China are for the first time discovered as a co-hyperaccumulator of both Tl and As.

  • Study on the Release Mechanism of Thallium in Tl ...

    A thallium release mechanism was proposed that the dissolution- adsorption precipitation equilibrium of thallium was occurred, and this equilibrium was under the control of both neutralization ...

  • Thallium (PIM 525)

    THALLIUM International Programme on Chemical Safety Poisons Information Monograph 525 Chemical 1. NAME 1.1 Substance Thallium 1.2 Group Heavy metals 1.3 Synonyms Thallium Sulphate 1.4 Identification numbers 1.4.1 CAS number 7440-28-0 1.4.2 Other numbers 746-18-6 1.5 Main brand names, main trade names 1.6 Manufacturers, Importers 2.

  • Thallium Tl - PubChem

    Thallium is a naturally occurring trace metalloid element with atomic symbol Tl, atomic number 81, and atomic weight 204.383. Thallium is used in manufacturing, as well as in some chemical reactions and medical procedures. Use as a pesticide has been banned in the United States due to toxicity from accidental exposure. It is characterized as an odorless, bluish-white, metallic soft solid that ...

  • Thallium Toxicity - Medscape

    Thallium interferes with protein synthesis by damaging ribosomes, particularly the 60s ribosome, further leading to cellular injury and death. [14] Although the exact mechanism of myelin injury by thallium is unknown, there are consistent findings of fragmentation and degeneration of myelin in both the central and peripheral nervous systems.

  • Thallium Toxicity: General Issues, Neurological Symptoms ...

    Sep 10, 2017  Abstract. Thallium (Tl +) is a ubiquitous natural trace metal considered as the most toxic among heavy metals.The ionic ratio of Tl + is similar to that of potassium (K +), therefore accounting for the replacement of the latter during enzymatic reactions.The principal organelle damaged after Tl + exposure is mitochondria. Studies on the mechanisms of Tl + include intrinsic pathways altered and ...

  • Toxicological Review of Thallium and compounds (CAS No ...

    Table 4-5. Thallium toxicity in animals following oral exposure ..... 29 Table 4-6. Thallium toxicity in animals via injection ..... 366 Table 5-1. Incidence data and BMD modeling results for

  • Thallium - Wikipedia

    Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that 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 ...

  • Thallium Toxicity - Medscape

    Thallium interferes with protein synthesis by damaging ribosomes, particularly the 60s ribosome, further leading to cellular injury and death. [14] Although the exact mechanism of myelin injury by thallium is unknown, there are consistent findings of fragmentation and degeneration of myelin in both the central and peripheral nervous systems.

  • Thallium Toxicity: General Issues, Neurological Symptoms ...

    Sep 10, 2017  Abstract. Thallium (Tl +) is a ubiquitous natural trace metal considered as the most toxic among heavy metals.The ionic ratio of Tl + is similar to that of potassium (K +), therefore accounting for the replacement of the latter during enzymatic reactions.The principal organelle damaged after Tl + exposure is mitochondria. Studies on the mechanisms of Tl + include intrinsic pathways altered and ...

  • Toxicological Review of Thallium and compounds (CAS No ...

    Table 4-5. Thallium toxicity in animals following oral exposure ..... 29 Table 4-6. Thallium toxicity in animals via injection ..... 366 Table 5-1. Incidence data and BMD modeling results for

  • Thallium - Wikipedia

    Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that 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 ...

  • Isotopes of thallium - Wikipedia

    Thallium (81 Tl) has 41 isotopes with atomic masses that range from 176 to 216. 203 Tl and 205 Tl are the only stable isotopes and 204 Tl is the most stable radioisotope with a half-life of 3.78 years. 207 Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes.. Thallium-202 (half-life 12.23 days) can be made in a cyclotron while thallium-204 (half ...

  • Thallium: What Are the Symptoms of Poisoning?

    Thallium enters the environment primarily from coal-burning and smelting, in which it is a trace contaminant of the raw materials. It stays in the air, water, and soil for a long time and is not broken down. Some thallium compounds are removed from the atmosphere in rain and snow. It's absorbed by plants and enters the food chain.

  • THALLIUM : Systemic Agent - CDC

    Charcoal binds to thallium, keeping it within the intestinal tract; thallium is thereby prevented from being absorbed and it passes out of the body more readily. The usual dose for adults or children is 0.5 to 1.0 g/kg by mouth (per dose). ANTIDOTE: The FDA has approved Prussian blue (Radiogardase™) as an antidote for thallium toxicity. It is ...

  • Thallium triiodide - Wikipedia

    Thallium triiodide is a chemical compound of thallium and iodine with formula TlI 3.Unlike the other thallium trihalides, which contain thallium(III), TlI 3 is a thallium(I) compound and contains the triiodide ion, I 3 −.. An appreciation as to why Tl + is not oxidised to Tl 3+ in the reaction: . Tl 3+ + 2 I − → Tl + + I 2. can be gained by considering the standard reduction potentials ...

  • (PDF) Thallium (Tl) sorption onto illite and smectite ...

    Clay minerals play a relevant role in the transport and fate of trace elements in the environment. Though illite has been referred as an important Thallium (Tl) bearing phase in soils, mechanisms ...

  • Thallium - Wikipedia

    Thallium is a chemical element wi seembol Tl an atomic nummer 81. This saft gray poor metal is nae foond free in naitur. When isolated, it resembles tin, but discolors when exposed tae air. Chemists William Crookes an Claude-Auguste Lamy discovered thallium independently in 1861, in

  • Thallium acetate TlC2H3O2 - PubChem

    The distribution of thallium among body organs and brain regions was investigated in male and female Wistar rats. Rats were injected intraperitoneally with a thallium acetate solution. The dose used was 16 mg/kg as thallium, half the median lethal dose for adult rodents.Rats were sacrificed from 0.125 to 3 days after dosing.

  • Adsorption mechanisms of thallium(I) and thallium(III) by ...

    Jun 01, 2014  Uptake of both thallium ions is very fast in the first 10 min. The adsorption isotherm of Tl(I) follows the Langmuir model with maximum adsorption capacity of 709.2 mg g(-1). Ion-exchange between Tl(+) and Na(+) in the interlayers of TNTs is the primary mechanism for Tl(I) adsorption. Excess Tl(+) undergoes further exchange with H(+).

  • Thallium(I) sulfate - Wikipedia

    Thallium(I) sulfate inhibits the growth of plants by preventing germination. Tl 2 SO 4 is mostly used today as a source of Tl + in the research laboratory. It is a precursor to thallium(I) sulfide (Tl 2 S), which exhibits high electrical conductivity when exposed to infrared light.

  • Thallium Sorption onto Manganese Oxides

    The sorption of toxic thallium (Tl) onto manganese (Mn) oxides strongly influences the mobility and bioavailability of Tl in contaminated soils and sediments1−8 and is also of interest for selective Tl removal from drinking and wastewater.9,10 Furthermore, Tl sorption onto Mn oxides is of high interest with respect to the sequestration of Tl ...

  • Thallium acetate TlC2H3O2 - PubChem

    The distribution of thallium among body organs and brain regions was investigated in male and female Wistar rats. Rats were injected intraperitoneally with a thallium acetate solution. The dose used was 16 mg/kg as thallium, half the median lethal dose for adult rodents.Rats were sacrificed from 0.125 to 3 days after dosing.

  • Adsorption mechanisms of thallium(I) and thallium(III) by ...

    Jun 01, 2014  Uptake of both thallium ions is very fast in the first 10 min. The adsorption isotherm of Tl(I) follows the Langmuir model with maximum adsorption capacity of 709.2 mg g(-1). Ion-exchange between Tl(+) and Na(+) in the interlayers of TNTs is the primary mechanism for Tl(I) adsorption. Excess Tl(+) undergoes further exchange with H(+).

  • Thallium(I) sulfate - Wikipedia

    Thallium(I) sulfate inhibits the growth of plants by preventing germination. Tl 2 SO 4 is mostly used today as a source of Tl + in the research laboratory. It is a precursor to thallium(I) sulfide (Tl 2 S), which exhibits high electrical conductivity when exposed to infrared light.

  • Thallium Sorption onto Manganese Oxides

    The sorption of toxic thallium (Tl) onto manganese (Mn) oxides strongly influences the mobility and bioavailability of Tl in contaminated soils and sediments1−8 and is also of interest for selective Tl removal from drinking and wastewater.9,10 Furthermore, Tl sorption onto Mn oxides is of high interest with respect to the sequestration of Tl ...

  • Thallium(I) Oxidation by Permanganate and Chlorine ...

    The oxidation of the toxic heavy metal thallium(I) (Tl(I)) is an efficient way to enhance Tl removal from water and wastewater. However, few studies have focused on the kinetics of Tl(I) oxidation in water, especially at environmentally relevant pH values. Therefore, the kinetics and mechanisms of Tl(I) oxidation by the common agents KMnO4 and HOCl under environmentally relevant pH condition ...

  • Hyperaccumulation and transport mechanism of thallium and ...

    Request PDF Hyperaccumulation and transport mechanism of thallium and arsenic in brake ferns (Pteris vittata L.): A case study from mining area Both thallium (Tl) and arsenic (As) bear severe ...

  • Thallium Tl (Element) - PubChem

    Thallium sulfate (Tl 2 SO 4), an odorless, tasteless thallium compound, was once used as a rat and ant poison, although it has been banned from household use in the United States since 1974. Thallium sulfide (Tl 2 S), thallium iodide (TlI) and thallium bromide (TlBr) are all compounds used in devices to detect infrared radiation.

  • A comparison of hepatocyte cytotoxic mechanisms for ...

    Thallium (Tl) is a highly toxic heavy metal though up to now its mechanisms are poorly understood. In this study, we comparatively investigated the cytotoxic mechanisms of Tl(I) and Tl

  • Relevance of Increased Lung Thallium Uptake on Stress ...

    Objectives. This study sought to determine the significance of abnormal thallium-201 (Tl-201) lung uptake on stress imaging in the absence of perfusion abnormalities. Background. Abnormal Tl-201 lung uptake, represented by an increased lung/heart ratio (LHR), on stress imaging is a marker of stress-induced left ventricular dysfunction and poor prognosis in patients with coronary artery disease.

  • Thallium Poisoning: Symptoms, Diagnosis and Treatment ...

    Thallium poisoning is very rare and may occur accidentally, through occupational exposure and because of its potency, it is described as a weapon of intentional poisoning. Symptoms are primarily related to the gastrointestinal and nervous system, while diffuse alopecia 3 weeks after ingestion is typical for thallium intoxication. Toxicology tests are done to evaluate thallium concentrations in ...

  • Hyperaccumulation and transport mechanism of thallium and ...

    Nov 25, 2019  Both thallium (Tl) and arsenic (As) bear severe toxicity. Brake fern (Pteris vittata L.) is well-known for its hyperaccumulation capacity of As, yet its role on Tl accumulation remains unknown. Herein, brake ferns growing near an As tailing site in Yunnan, Southwestern China are for the first time discovered as a co-hyperaccumulator of both Tl ...

  • Thallium Transfer from Hydrochloric Acid Media into Pure ...

    The extraction of the cationic thallium species Tl + is higher for ionic liquids with more hydrophilic cations, while for the TlX z 3–z anionic species (where X = Cl – and/or Br –), the extraction efficiency is greater for ionic liquids with more hydrophobic cations. The highest distribution value of Tl(III) was approximately 2000.

  • (PDF) Toxicity of Thallium at Low Doses: A Review

    A mini review of the toxicity of Thallium (Tl) at low doses is herein presented. Thallium has severe toxicity. Although its acute biological effects have been widely investigated and are well ...

  • Thallous cation tl-201 Tl+ - PubChem

    Thallium cation tl-201 (1+) is a Radioactive Diagnostic Agent. The mechanism of action of thallium cation tl-201 (1+) is as a Radiopharmaceutical Activity.

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