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DETERMINATION OF METALS IN AMBIENT PARTICULATE …

DETERMINATION OF METALS IN AMBIENT PARTICULATE MATTER USING ATOMIC ABSORPTION (AA) SPECTROSCOPY 1. Scope 1.1 Suspended particulate matter (SPM) in air generally is a complex multi-phase system of all airborne solid and low vapor pressure liquid particles having aerodynamic particle sizes from below 0.01-100 µm and larger.

Journal of Chemistry - Hindawi Publishing Corporation

A simple, rapid, and powerful microextraction technique was used for determination of palladium (II) ion in water samples using dispersive liquid-liquid microextraction (DLLME) followed by graphite furnace atomic absorption spectrometry (GF AAS). The different variables affecting the complexation and extraction conditions such as extraction and disperser solvent type, extraction time, pH, and ...

Solid phase extraction and graphite furnace ... - DeepDyve

Mar 11, 2002· Read "Solid phase extraction and graphite furnace atomic absorption spectrometric determination of ultra trace amounts of bismuth in water samples, Talanta" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at …

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-(p-chlorophenyl)-1-(pyridin-2-yl)thiosemicarbazide (HCPTS) …

Determination of ultra-trace aluminum in human albumin by ...

Apr 15, 2010· A cloud point extraction (CPE) method for the preconcentration of ultra-trace aluminum in human albumin prior to its determination by graphite furnace atomic absorption spectrometry (GFAAS) had been developed in this paper.

Graphite Furnace Atomic Absorption spectroscopy.

Graphite Fufnace AA The graphite furnace is an electrothermal atomiser system that can produce temperatures as high as 3.000°C. The heated graphite furnace provides the thermal energy to break chemical bonds within the sample held in a graphite tube, and produce free ground state atoms. ... Extraction, digestion etc. Sample type can be solid ...

Electric Arc Furnace Design Operation and Working Principle

The Second World War saw a steep increase in the use of these furnaces leading to the modern Electric Arc Furnace design operation and working principles. These improvements to the processing of scrap steel comprised of larger more efficient and higher capacity furnaces; a 100T furnace would process the scrap in about an hour, using a transformer of 60MVA capacity.

Environmental Impact Economics Metal Extraction mining ...

The environmental impact and economics of mineral mining and metal extraction - Chemical economics and processing. ... (mineral extraction), of using metals and of recycling metals – economic, sociological and environmental issues ... Toxic carbon monoxide from the blast furnace extraction of iron, it can be burnt as a fuel, but it must not ...

Allylthiourea functionalized magnetic adsorbent for the ...

Abstract. A quick and sensitive method was developed for the trace determination of Cd(II), Pb(II) and Cu(II) ions in water and bean samples. It is based on a combination of magnetic solid phase extraction (MSPE) and graphite furnace atomic absorption spectrometry (GFAAS).

Solid phase extraction and graphite furnace atomic ...

Request PDF on ResearchGate | Solid phase extraction and graphite furnace atomic absorption spectrometric determination of ultra trace amounts of bismuth in …

Graphite furnace atomic absorption spectrometric ...

The surfactant-rich phase is directly injected into the graphite atomizer of an atomic absorption spectrometer. Using a 10-mL aliquot sample and 150 μL of a 15% Triton X-114 solution, the enrichment factor for the analyte is 103, which results in a detection limit of 0.02 μg L-1 vanadium. The separation of V(V) and V(IV) using an ion ...

Multivariate optimization of the hollow fiber-based liquid ...

The present study developed a liquid-phase microextraction based on hollow fiber coupled with graphite furnace atomic absorption spectrometry for the effective extraction and quantitation of lead from urine and blood samples. A multivariate design was used for the optimization of the experimental conditions to ensure high extraction efficiency.

Lead, atomic absorption spectrophotometry, graphite …

graphite furnace containing a graphite platform (Hinderberger and others, 1981). A sample is placed on the graphite platform, and a matrix modifier is added. The sample then is evaporated to dryness, charred, and atomized using high-temperature ramping. The absorption signal produced during atomization is recorded and compared with standards. 3.

A novel, environmentally friendly procedure for copper ...

/ A novel, environmentally friendly procedure for copper extraction using dimethylindodicarbocyanine dye and subsequent graphite furnace atomic absorption spectrometric detection. In: Analytical Methods. 2011 ; Vol. 3, No. 10. pp. 2412-2415.

EPA Method 7010 (SW-846): Graphite Furnace Atomic ...

pyrolytic graphite is used, the rate of atomization, and furnace design. This situation is detected through blank burns. The tube should be cleaned by operating the furnace at full power for the required time period, as needed, at regular intervals during the series of determinations.

ASTM E1613 - 12 Standard Test Method for Determination of ...

1.2 This test method covers the lead analysis of sample extracts or digestates (for example, extracted or digested paint, soil, dust, and airborne particulate) using inductively coupled plasma atomic emission spectrometry (ICP-AES), flame atomic absorption spectrometry (FAAS), or graphite furnace atomic absorption spectrometry (GFAAS).

Determination of Trace Amounts of Lead by Modified ...

The liquid phase microextraction (LPME) was combined with the modified Graphite furnace atomic absorption spectrometry (GF-AAS) for determination of lead in the water and solid samples. In a preconcentration step, lead was extracted from a 2 ml of its aqueous sample in the pH = 5 as lead-Pyrimidine-2-thiol cationic complex into a 4 µl drop of 1,2 dichloroethane and ammonium …

Magnetic solid-phase extraction combined with graphite ...

Nov 15, 2013· A new approach of magnetic solid phase extraction (MSPE) coupled with graphite furnace atomic absorption spectrometry (GFAAS) has been developed for the speciation of Cr(III) and Cr(VI) using zincon-immobilized silica-coated magnetic Fe 3 O 4 nanoparticles (Zincon–Si–MNPs) as the MSPE absorbent. Cr(III) was quantitatively reserved on the absorbent at pH 9.1 while total Cr was …

Organic complexation and total dissolved trace metal ...

and is widely used for the extraction of trace met-als from sea and estuarine water prior to analysis by graphite furnace atomic absorption spectrometry (GFAAS) or inductively coupled plasma-mass spec-trometry (ICP-MS)[17–19]. However, the PDC/DDC solvent-extraction method although very reliable, is time consuming and difficult to automate ...

Methods Search - American Oil Chemists' Society

Ca 18-79 Chromium, Copper, Iron, Nickel, and Manganese in Triglyceride Oils by AAS Using a Graphite Furnace Ca 18b-91 Copper, Iron, and Nickel by Graphite Furnace Atomic Absorption Spectrophotometry Ca 18c-91 Lead by Direct Graphite Furnace Atomic Absorption Spectrophotometry

Graphite Furnace Atomic Absorption Spectrometry - an ...

The arsenic in the extracts is then determined by injection of an aliquot of the organic phase into a graphite furnace atomic absorption spectrometer [337,338,340] or by mineralizing the organic phase [339,342] and using aliquots of the resulting solutions for graphite furnace atomic absorption spectrometry [339] or hydride generation [341,342 ...

LEADX.02- LEAD (GRAPHITE FURNACE ATOMIC …

LEAD (GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROSCOPY) PRINCIPLE ... Solid Phase Extraction of Lead and Other Metals from Maple Syrup Using an Empore TM Chelation Membrane. Louis C. Haddad, 3M I&C New Products Laboratories, 209-1C-30. 6.

Selective extraction of traffic-related antimony compounds ...

The detection limit (DL) was evaluated based on the 4-hour To validate the conditions of Sb determination by graphite furnace extraction of 5 independent portions of the original soil sample with atomic absorption spectrometry (GFAAS), some samples were also 0.5 mol L−1 citric acid, the Sb content of which was determined by the spiked with a ...

Determination of Trace Antimony (III) in Water Samples ...

A new sensitive method for antimony (III) determination by graphite furnace atomic absorption spectrometry (GFAAS) has been developed by using N-benzoyl-N-phenylhydroxylamine (BPHA) and 1-butyl-3-methylimidazolium hexafluorophosphate ([C4mim][PF6]) single drop microextraction. The single drop microextraction (SDMM) system is more competitive compared with other traditional extraction …

Electric arc furnace - Wikipedia

An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one ton capacity (used in foundries for producing cast iron products) up to about 400 ton units used for secondary steelmaking.

The determination of the content of gold and silver in ...

One of the known procedures is the extraction of gold with methyl isobutyl ketone (MIBK)1–3,10 and its direct determination by flame atomic absorption spectropho-tometry. Graphite furnace atomic absorption spectrophotometry (GFAAS) enables the detection of low concentrations of silver and gold, but previous extraction of the

Graphite furnace atomic absorption - Wikipedia

Graphite furnace atomic absorption spectroscopy (GFAAS) (also known as Electrothermal Atomic Absorption Spectroscopy (ETAAS)) is a type of spectrometry that uses a graphite-coated furnace to vaporize the sample. Briefly, the technique is based on the fact that free atoms will absorb light at frequencies or wavelengths characteristic of the element of interest (hence the name atomic …

Determination of Heavy Metals at Sub-ppb Levels in Water ...

A direct analysis method combining an iminodiacetate extraction disk (IED) with graphite furnace atomic absorption spectrometry was developed for the determination of Co, Ni, Cu, Cd, Sn, Pb, and Bi at sub-ppb levels in water. A 100 mL water sample was adjusted to pH 5.6 with nitric acid and a 1 mol·L–1 ammonium acetate solution, and then passed