نتایج جستجو برای: thallium compounds

تعداد نتایج: 230503  

2005
A. Saha

This review article deals with the growing concern of the toxicity of thallium. This article describes the characteristics of thallium, its potential sources of exposure, kinetics, and toxicity on human being and diagnosis of thallium poisoning. This article also describes some episodes of thallium poisoning arising from both occupational and nonoccupational exposure.

2005
Hosakere D. REVANASIDDAPPA

Thallium is commonly found with lead, zinc, iron, tellurium and the alkalis . It is normally present only at trace level (¡10 μg L−1) in natural waters. It is toxic and is on several regulatory lists . Determination of trace amounts of thallium is of great importance because of its toxic nature and also because of its increasing industrial applications . The main sources of thallium pollution a...

Journal: :Circulation 1975
H W Strauss K Harrison J K Langan E Lebowitz B Pitt

Following intravenous administration, the myocardial concentration of tracer thallium-201, potassium-43, and rubidium-81 were determined in mice; thallium was present in the greatest concentration in the myocardium (2.08% compared 1.25% for potassium and 1.15% for rubidium at 10 minutes). The regional myocardial distribution of thallium-201 was determined in dogs under conditions of normal flow...

2017
Włodzimierz Zembrzuski Bożena Karbowska

Objectives: The present study is focused on the determination of thallium (I) ions in homeopathic drugs. Methods: The determination was carried out using the Differential Pulse Anodic Stripping Voltammetry (DPASV) technique coupled with the flow-injection measuring system (FIA-DPASV). Results: The thallium content was analyzed in two commercial homeopathic preparations (Thallium aceticum 5CH an...

Journal: :Applied sciences 2022

Soil contamination with such rare heavy metals as silver (Ag), bismuth (Bi), tellurium (Te), and thallium (Tl) leads to disruption of its agricultural ecological functions. Each these has a different level soil toxicity, which affects the state recovery degree estimated by biological indicators. The work objective is assess ecotoxicity oxides nitrates silver, bismuth, tellurium, indicators Hapl...

2005
Robert 0. Bonow Vasken Dilsizian Alberto Cuocolo Stephen L. Bacharach

In patients with chronic coronary artery disease and left ventricular dysfunction, the distinction between ventricular dysfunction arising from myocardial fibrosis and ischemic, but viable, myocardium has important clinical implications. By positron emission tomography (PET), enhanced fluorine-18-labeled fluorodeoxyglucose (FDG) uptake in myocardial segments with impaired function and reduced b...

2005
Vasken Dilsizian Wendy R. Smeltzer

Background. Thallium reinjection immediately after conventional stress-redistribution imaging improves the detection of viable myocardium, as many myocardial regions with apparently "irreversible" thallium defects on standard 3-4-hour redistribution images manifest enhanced thallium uptake after reinjection. Because the 10-minute period between reinjection and imaging may be too short, the pres...

Journal: :Ecotoxicology and environmental safety 2012
Zenon Lukaszewski Bozena Karbowska Wlodzimierz Zembrzuski Marcin Siepak

Thallium is a highly toxic element. Its concentration in sediment fractions from the 2004 tsunami in Thailand was investigated. A modified BCR procedure was used for sequential extraction. Tl was determined by flow injection differential pulse anodic stripping voltammetry. It was found that the majority of thallium in the investigated tsunami sediments (86-97 percent) is entrapped in the alumos...

Journal: :Circulation 1991
V Dilsizian W R Smeltzer N M Freedman R Dextras R O Bonow

BACKGROUND Thallium reinjection immediately after conventional stress-redistribution imaging improves the detection of viable myocardium, as many myocardial regions with apparently "irreversible" thallium defects on standard 3-4-hour redistribution images manifest enhanced thallium uptake after reinjection. Because the 10-minute period between reinjection and imaging may be too short, the prese...

Journal: :journal of physical & theoretical chemistry 2011
h. dashti khavidaki h. aghaie m. r. shishehbore

in this study, the adsorption of thallium (iii) ion from aqueous solutions onto modified znonanopowder as a fairly low cost adsorbent has been investigated in batch mode. it was found thatmodification of the adsorbent was essential for obtaining the significant adsorption percentage. theadsorbent modified by sodium phosphate solution. the effect of experimental parameters such asinitial ph of s...

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