Presence of thallium in the environment: sources of ...
26-10-2016 · Determination of thallium traces by ETAAS after on-line matrix separation and preconcentration in a flow injection system. Journal of the Brazilian stone Society. 2007; 18 (7):1353–1359. doi: 10.1590/S0103-50532007000700010. Asami T, Mizui C, Shimada T, Kubota M. Determination of thallium in soils by flame atomic absorption spectrometry.
Determination of thallium in water samples - …
Determination of ultratrace levels (ng l − 1) of Tl in natural water by ETAAS after preconcentration with chloroform extraction of dithizonate complex and back-extraction into nitric acid solution has been reported by Kawaguchi .
(PDF) ETAAS determination of thallium and silver …
ETAAS determination of thallium and silver from water matrix after colloidal precipitate flotation using lead ... The method was applied for determination of thallium in water, hair, nail, and standard reference samples. ... Optimization of analytical variables during enrichment and ETAAS determination of the metals are discussed.
Determination of thallium in wine by …
A simple method for extraction electrothermal atomic absorption spectroscopy (ETAAS) determination of Tl in wine is described. The wine sample is decomposed with a mixture of nitric acid and hydrogen peroxide and both thallium species Tl(I) and Tl(III) are extracted from 0.5 mol l −1 KI solution into iso-butyl methyl ketone (IBMK).
Ultra-trace determination of thallium(I) using a ...
5-1-2017 · Ultra-trace determination of thallium(I) using a nanocomposite consisting of magnetite, halloysite nanotubes and dibenzo-18-crown-6 for preconcentration prior to its quantitation by ET-AAS. Elham Ashrafzadeh Afshar 1,
ETAAS determination of thallium and silver from water ...
ETAAS determination of thallium and silver from water matrix after colloidal precipitate flotation using lead(II) hexamethylenedithiocarbamate KATARINA ^UNDEVA, GORICA PAVLOVSKA and TRAJ^E STAFILOV* Institute of Chemistry, Faculty of Natural Sciences and Mathematics, St. Cyril and Methodius University, P. O. Box 162, 91000 Skopje, Macedonia
Speciation analysis of thallium using ... - SpringerLink
24-10-2009 · Abstract. The enrichment ability of carbon nanotubes (CNTs) was investigated and a new method established for the determination of trace thallium species in environmental samples using electrothermal atomization-atomic absorption spectrometry (ETAAS).
Control of spectral and non-spectral interferences …
18-9-2001 · The direct analysis of solid samples using electrothermal (graphite furnace) atomic absorption spectrometry (ETAAS) has been investigated for the determination of thallium in river and marine sediment reference materials, because complete digestion of sediment samples requires the use of hydrofluoric acid and/or an
Determination of thallium and lead in nickel-based …
12-1-2020 · The long linear dynamic range of LEAFS allowed the elimination of the use of an internal gas flow through the furnace for the determination of lead. The analyte backgrounds for thallium and lead in nickel-based alloy solid samples using ETA-LEAFS and ETAAS were compared.
J. Braz. Chem. Soc., Vol. 18, No. 7, 1353-1359, 2007.
J. Braz. Chem. Soc., Vol. 18, No. 7, 1353-1359, 2007. Printed in Brazil - ©2007 Sociedade Brasileira de Química 0103 - 5053 $6.00+0.00 Article *e-mail: [email protected] Determination of Thallium Traces by ETAAS after On-Line Matrix Separation and Preconcentration in a Flow Injection System Taherah Asadoulahi, ...
ISO 20279:2005(en), Soil quality ? Extraction of …
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(PDF) Extraction Separation and Electrothermal …
method (calculated as 3 SD of the blank) was found to be 50 It is known that thallium chlorides and nitrates interfere with ng/g. thallium determination by ETAAS caused by their volatilisation in the pyrolysis stage.42,43 Therefore, the addition of a matrix modifier is necessary.
DETERMINATION OF THALLIUM IN GEOLOGICAL SAMPLES BY …
(ETAAS) was developed. Different procedures for sample decomposition have been examined for obtaining reliable results. Several ammonium salts as stone modifiers have also been applied for stabilization of thallium species in graphite atomizer. The limit of thallium determination by this method was 0.1 µg/g Tl. INTRODUCTION
Determination of thallium traces by ETAAS after on …
14-3-2007 · Journal of the Brazilian stone Society Print version ISSN 0103-5053On-line version ISSN 1678-4790 ... automation of determination of thallium with ETAAS is just beginning. 21,22 Ivanova et al. 21 reported a flow injection on-line sorption preconcentration in a knotted reactor coupled with ETAAS for determination of thallium.
ISO 20279:2005(en), Soil quality ? Extraction of …
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Determination of Thallium Traces from Aqueous Solutions ...
Determination of Thallium Traces from Aqueous Solutions Using Iron(III) Hexamethylenedithiocarbamate as a Flotation Collector and Subsequent Electrothermal Atomic Absorption Spectrometry Gorica Pavlovska, Katarina ^undeva, and Traj~e Stafilov* Institute of Chemistry, Faculty of Natural Sciences and Mathematics,
An On-Line Flow-Injection Sorbent Extraction System ...
thallium using various stationary phases. Quinolin-8-ol on controlled pore glass beads [10], oxine immobilized on coated alumina [11], and thallium(III) ion-imprinted polymer particles [12] were used in FI–FAAS systems for thallium determination, while in the case of FI–ETAAS, titanium dioxide
ETAAS determination of thallium and silver from …
After flotation separation from the mother liquor, the solid sublate containing traces of thallium and silver was dissolved and the analytes were determined by electrothermal atomic absorption spectrometry (ETAAS). The results of the ETAAS analysis are compared with those obtained by inductively coupled plasma-atomic emission spectrometry.
Soil quality — Extraction of thallium and determination by ...
Soil quality — Extraction of thallium and determination by electrothermal atomic absorption spectrometry WARNING — Thallium solutions are highly toxic. Appropriate measures shall be taken to avoid ingestion. Care should be taken in the disposal of these solutions.
ETAAS determination of thallium and silver from ... …
ETAAS determination of thallium and silver from water matrix after colloidal precipitate flotation using lead(II) hexamethylenedithiocarbamate . By TRAJCE STAFILOV, KATARINA CUNDEVA and GORICA PAVLOVSKA. Abstract.