نتایج جستجو برای: electrothermal atomic absorption spectroscopy

تعداد نتایج: 359417  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
mahmood payehghadr homa shafiekhani ali reza sabouri abdoll mohammad attaran mohammad kazem rofouei

a facile and highly efficient method have been developed for the preconcentration of the mercury content in crude oil and gasoline samples after digestion with microwave-assisted digestion. octadecyl silica membrane disk has been modified by the recently synthesized triazene ligand, (e)-1-(2-ethoxyphenyl)-3-(4-nitrophenyl) triaz-1-ene (ent), then the modified membrane was used for the preconcen...

Journal: :Acta pharmaceutica 1979
Julijana Cvetković Sonja Arpadjan Irina Karadjova Trajce Stafilov

A method is described for direct electrothermal atomic absorption spectrometric (ETAAS) determination of cadmium in untreated samples of wine. Pyrolytic graphite tubes and graphite tubes with standard L'vov pyrolytic platforms were tested as atomizers. The detection limit achieved was 0.08 microg L(-1) Cd in wine. The relative standard deviation for the concentration range from 0.2 to 10 microg...

Journal: :acta medica iranica 0
r. nafissy

lithum can be de termined both by atomic absorption spectroscopy andflame emission spectroscopy. we have used the later method with a zeiss model pmqli spectro photometer fitt ed with ante-chamber atomizer and a potensiome rric line recorder. accurate ana lysis for the clement was acco mplished due to a sophisracared measuring instrument.

2012

2. Referenced Documents 2.1 ASTM Standards: D1318 Test Method for Sodium in Residual Fuel Oil (Flame Photometric Method) D3237 Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy D3340 Test Method for Lithium and Sodium in Lubricating Greases by Flame Photometer D3605 Test Method for Trace Metals in Gas Turbine Fuels by Atomic Absorption and Flame Emission Spectroscopy D3831 Test...

2002
Trajče STAFILOV Dragica ZENDELOVSKA

A method for the determination of lead, cobalt, nickel, chromium, zinc and manganese in iron minerals siderite (FeCO3), hematite (Fe2O3), pyrite and marcasite (FeS2)by flame and Zeeman electrothermal atomic absorption spectrometry (ETAAS) was developed. Interferences were investigated by measuring the absorbance of the elements investigated in series of samples with varying mass ratios of the e...

Journal: :The Journal of Automatic Chemistry 1995
J. L. Burguera M. Burguera P. Carrero J. Marcano C. Rivas M. R. Brunetto

The paper describes the development of an automatic on-line column pre-concentration technique using a time based-flow injection atomic absorption spectrometry system. A manifold incorporating a micro-column containing 25 mg of Dowex 50W-X8 was used with a time-based injector for the pre-concentration and determination of copper in natural and drinking waters. The system features depend on the ...

Journal: :Journal of Research of the National Bureau of Standards 1988

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