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graphite furnace atomic absorption spec... Publications ...

Although graphite furnace atomic absorption spectrometry (GF AAS) allows the investigation of biological samples such as blood, serum, and plasma without this step, it is rarely used for direct analysis because the residues of the rich organic matrix inside the furnace are difficult to remove and this may cause spectral/matrix interferences and ...

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Cloud point extraction for the determination of trace ...

A cloud point extraction (CPE) system for the graphite furnace atomic absorption spectrometric (GFAAS) determination of Pt(IV) has been developed. The procedure is based on the complexation of Pt(IV) with 4(pchlorophenyl)1(pyridin2yl)thiosemicarbazide (HCPTS) in the presence of Triton X114 as a nonionic surfactant.

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Separation and preconcentration by cloud point extraction ...

CPE/GFAAS. Cloud point extraction/Graphite furnace atomic absorption spectrometry. CRM. Certified reference material. CVAAS. Cold vapour atomic absorption spectrometry. CVAFS. Cold vapouratomic fluorescence spectrometry. CVICPOES. Cold vapourinductively coupled plasmaoptical emission spectrometry. DCPE. Displacement cloud point ...

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Determination of Ultratrace Rhodium in Water Samples by ...

Abstract: A highly sensitive method based on cloud point extraction (CPE) separation/ preconcentration and graphite furnace atomic absorption spectrometry (GFAAS) detection has been developed for the determination of ultratrace amounts of rhodium in water samples. A new reagent,

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Speciation of Chromium (III) and Chromium (VI) in River ...

Speciation of Chromium (III) and Chromium (VI) in River Water by Graphite Furnace Atomic Absorption Spectrometry after Cloud Point Extraction with Ammonium Pyrrolidinedithiocarbamate

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CORE

Texto completo: acesso restrito. p. 10191027Cloud point extraction (CPE) is proposed as a preconcentration procedure for the determination of Pb and Cd in undigested urine by graphite furnace atomic absorption spectrometry (GF AAS). Aliquots of mL urine were acidified with HCl and the ...

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Canadian Journal of Chemistry NRC Research Press

A simple and rapid cloud point extraction methodology has been developed for the separation and preconcentration of palladium (Pd2+), gold (Au3+), and silver (Ag+) ions. The metal ions in the initial aqueous solution were complexed with 4allylthiosemicarbazide, and Triton X114 was added as surfactant. Dilution of the surfactantrich phase with acidified metanol was performed after phase ...

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Cloud point extraction and graphite furnace atomic ...

Dec 15, 2006· Cloud point extraction and graphite furnace atomic absorption spectrometry determination of manganese(II) and iron(III) in water samples. ... (CPE) was applied as a preconcentration step prior to graphite furnace atomic absorption spectrometry (GFAAS) determination of manganese(II) and iron(III) in water samples. ...

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Iron and selenium speciation in enriched adzuki bean ...

Iron and selenium speciation in enriched adzuki bean sprouts after fractionation procedures by graphite furnace atomic absorption spectrometry Aline Pereira de Oliveira, 1 Cassiana Seimi Nomura, 2 Sidnei Gonçalves ... the method was based on CPE using nonionic surfactant Triton X114 in the presence of dithizone as a chelating agent, which ...

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DETERMINATION OF LEAD IN HUMAN HAIR BY HIGH …

RESOLUTION CONTINUUM SOURCE GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY WITH MICROWAVE DIGESTION AND SOLID SAMPLING LiJiao Zhao, Ting Ren, and RuGang Zhong College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China The contentof lead in human hair was measured by high resolution continuumsource graph

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Cloud point extraction and graphite furnace atomic ...

Read "Cloud point extraction and graphite furnace atomic absorption spectrometry determination of manganese(II) and iron(III) in water samples, Journal of Colloid and Interface Science" on DeepDyve, the largest online rental service for scholarly research with thousands of …

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Determination of Lead in Water Samples by Graphite Furnace ...

Determination of Lead in Water Samples by Graphite Furnace Atomic Absorption Spectrometry After Cloud Point Extraction Article in Talanta 67(5):9926 · November 2005 with 689 Reads

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Determination of trace vanadium in soil by ... SpringerLink

This work describes a new analytical procedure for trace vanadium by graphite furnace atomic absorption spectroscopy coupled to cloud point extraction (CPE) as the separationpreconcentration method. The CPE behavior of vanadium using methylene blue as complex agent and Triton X100 as a surfactant was investigated systematically.

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Application of microwaveassisted dispersive liquid–liquid ...

graphite furnace atomic absorption spectrometry (GFAAS) [12,13] and inductively coupled plasma mass spectrometry (ICPMS) [14,15,16], have been applied to direct determination of heavy metal ions among which GFAAS is the most sensitive technique. However, complex matrix interference and low concentration of metal

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Determination of platinum traces contamination by graphite ...

The main factors affecting CPE efficiency, Graphite furnace atomic absorption pH of the sample solution, concentrations of DDTC and Triton® X114, equilibration temperature and spectroscopy incubation time, were evaluated in order to enhance sensitivity of the method. The desorption of plat Platinum inum compounds from the swab was ...

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Cloud point extraction for speciation analysis of ...

A new method based on cloud point extraction (CPE) separation and graphite furnace atomic absorption spectrometry (GFAAS) detection was proposed for the determination of inorganic tin species. When the system temperature is higher than the cloud point extraction temperature (CPT) of the mixed surfactant of p

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Cloud point extraction and graphite furnace atomic ...

Cloud point extraction (CPE) was applied as a preconcentration step prior to graphite furnace atomic absorption spectrometry (GFAAS) determination of manganese(II) and iron(III) in water samples.

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(PDF) Determination of Trace Nickel in Water Samples by ...

A highly sensitive method based on cloud point extraction (CPE) separation/preconcentration and graphite furnace atomic absorption spectrometry (GFAAS) detection has been developed for the ...

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CORE

The results were in good agreement with those obtained by F AAS/GF AAS (flame atomic absorption spectrometry/graphite furnace atomic absorption spectrometry) and showed that CPEAaCNT can be successfully employed in the simultaneous determination of …

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Determination of Ultratrace Rhodium in Water Samples by ...

A highly sensitive method based on cloud point extraction (CPE) separation/preconcentration and graphite furnace atomic absorption spectrometry (GFAAS) detection has been developed for the determination of ultratrace amounts of rhodium in water samples.

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Rabin / Capital Recovery Group | Day 1 Formerly of ...

Day 1 Formerly of Graftech International Complete Graphite/Carbon Electrode Production Facility Rabin / Capital Recovery Group 2013 Isostatic press line, CPE central dust collection, Curing Graphitization, Furnaces, Extrusion Hydraulic press installations, Pulverizing Live Webcast Auction Feb 14, 2018 10am CST (4pm GMT) View Hide ...

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Fields of Application / Industry Interlab

In this work, a CPE procedure using Triton X114 as nonionic surfactant and O,Odiethyl dithiophosphate (DDTP) as chelating agent was developed for the extraction of Cd and Pb from undigested urine samples and their determination by graphite furnace atomic absorption spectrometry (GF AAS). The optimization of the experimental variables ...

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Utilization of electrodeposition on a graphite probe ...

These graphite parts were directly inserted into the graphite tube atomizer. The aim of the present work is to develop an electrodeposition system for preconcentration and separation of trace amounts of Pb2+ with a Pdmodified graphite probe as a working electrode for electrodeposition of lead and the introduction into the graphite furnace ...

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Determination of ultratrace aluminum in human albumin by ...

A cloud point extraction (CPE) method for the preconcentration of ultratrace aluminum in human albumin prior to its determination by graphite furnace atomic absorption spectrometry (GFAAS) had been developed in this paper.

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Online coupling electrochemical preconcentration and GFAAS ...

Abstract: The present article describes a method of determination of low antimony concentrations using a graphite furnace AAS technique after electrochemical preconcentration. A 2electrode owthrough cell was developed with a working electrode made of goldcoated porous carbon and an accessory Pt electrode. This cell worked in online coupling

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Analytical Services : Edwards Aquifer Research Data ...

EARDC has a 4110ZL Perkin Elmer Graphite Furnace for Trace Metal Analysis, Shimadzu 5050A Total Organic Carbon Analyzer, a Hewlett Packard 5890 GC/MS for volatile and semivolatile organic analysis with conformation, Finnigan 9001 GC with tandem PID/FID detector with purge and trap capabilities, and an Alpkem RFA 300 Autoanalyzer.

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