Tungsten Coil Devices in Atomic Spectrometry: Absorption, Fluorescence, and Emission

Determination of As, Cd, Cu, Hg and Pb in biological samples by modern electrothermal atomic absorption spectrometry

“…Better detection limits can be reached since blank values are usually lower than 0.01 A s [147,148]. Moreover, permanent modifiers prolong atomizer lifetime, providing enhanced thermal stability and repeatability [28,43,46,79,97,107,[147][148][149][150]. Currently, no single chemical compound can be identified as having a broad application for the determination of other elements.…”

Analytical Characteristics of a Continuum-Source Tungsten Coil Atomic Absorption Spectrometer

“…2,10 The tungsten coil was extracted from a commercial standard slide projector bulb (Osram, BRJ, 15 V, 150 W, Munich, Germany), and was positioned in the center of the radiation beam. A gaseous mixture composed of 90% Ar + 10% H2 at a flow-rate of 1.0 L min -1 was used as the purge gas.…”

“…Despite the lack of a commercial instrument, the use of the tungsten coil atomizer in AAS is gradually increasing. [1][2][3][4] The main drawback of AAS associated with each of these atomizers is the single-element nature of the measurement. Ongoing efforts to overcome this drawback have focused on the graphite-furnace atomizer.…”

Espectrometria de absorção atômica com atomização eletrotérmica em filamento de tungstênio: uma re-visão crítica

“…Em 2001, Hou et al 49 realizaram estudos do emprego de modificador químico permanente para determinações de Cd, onde 200 µg de irídio foram depositados sob a superfície do filamento. O uso deste modificador propiciou um aumento da vida útil do filamento, chegando a atingir 1000 ciclos de aquecimento, quando na maior parte dos trabalhos desenvolvidos normalmente são reportados de 150 a 300 ciclos de aquecimentos.…”