Atomic spectrometry and flow injection analysis: a synergic combination
نویسندگان
چکیده
منابع مشابه
Flow injection Techniques of Method Development for Flame Atomic-a bsorption Spectrometry
The flow injection introduction of samples that would be difficult by conventional nebulisation owing to dissolved solid content, viscosity or quenching effects on flame reactions is demonstrated. The various ways of achieving sample dilution by control of volume injected, tube dimensions and flow-rate are discussed and a manifold described for producing solutions for calibration purposes and d...
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Several procedures for the determination of Ca, Mg and Sr in soils have been compared on the basis of the accuracy of analysis of two NIST reference materials (Montana Soils SRM 2710 and SRM 2711). Samples were dissolved in a mixture of hydrofluoric and nitric acids in sealed vessels in a microwave oven and in teflon beakers on a hot plate. The digests obtained from both dissolution methods wer...
متن کاملDetermination of lead in wine and rum samples by flow injection-hydride generation-atomic absorption spectrometry.
A method for direct determination of lead in wine and rum samples was developed, using a flow injection hydride generation system coupled to an atomic absorption spectrometer with flame-quartz atomizer (FI-HG-AAS). Lead hyride (PbH(4)) was generated using potassium ferricyanide (K(3)Fe(CN)(6)), as oxidant and sodium tetrahydroborate (NaBH(4)) as reductant. Samples were acidified to 0.40% (v/v) ...
متن کاملOn-line Preconcentration of Nickel by Carbonyl Vaporization With Flow Injection and Continuous Flow Systems in Combination With Sensitive Determination by Electrothermal Atomic Absorption Spectrometry
A sensitive method is described for the on-line determination and preconcentration of nickel using the coupling of a flow system (continuous flow and flow injection) with transversely heated electrothermal atomic absorption spectrometry. The method is based on the volatilization of nickel as nickel tetracarbonyl and its trapping on a graphite surface. The carbonyl generation is optimized by usi...
متن کاملApplication of flow injection on-line electrothermal atomic absorption spectrometry to the determination of rhodium.
A fully automated procedure for the determination of rhodium has been developed using flow injection (FI) on-line microcolumn preconcentration coupled with electrothermal atomic absorption spectrometry (ETAAS). The proposed FI manifold and its operation make possible the introduction of the total eluate volume into the graphite atomizer, avoiding the necessity for optimisation of subsampling th...
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ژورنال
عنوان ژورنال: Analytica Chimica Acta
سال: 1988
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)80430-4