1,720,977 research outputs found
Effect of operating conditions on excitation temperature and electron number density in axially-viewed ICP-OES with introduction of vapors or aerosols
No full textEffect of operating conditions on excitation temperature and electron number density in axially-viewed ICP-OES with introduction of vapors or aersols
No full textThe combined effect of the power and the carrier gas flow rate on excitation temperature, electron number density, ionic-to-atomic line intensity ratios and departure from local thermal equilibrium has been studied in an axially-viewed plasma with introduction of different amounts of wet aerosols, partially desolvated aerosols or dry vapours, according to empirical modelling and experimental design methods. Under robust conditions (1500 W and a carrier gas flow rate of 0.7–0.85 L/min), an increase in water loading led to an improvement in the plasma excitation properties, while desolvation caused degradation. In contrast, under non-robust conditions, the
plasma was no longer able to tolerate an increase in water loading and desolvation resulted in an improvement in the plasma characteristics. The hydrogen formed during the hydride generation process significantly improved the plasma excitation properties, regardless of the conditions. In this instance, the plasma characteristics were primarily affected by the reductant concentration, which determined the amount of hydrogen generated, and by the carrier gas flow rate, which controlled its residence time within the plasma. In contrast, there was no relevant change in the plasma excitation conditions due to systematic variation of HCl concentration from 0.1 to 6 M
Studio delle proprietà di eccitazione di una sorgente a plasma per Spettrometria ottica in emissione con l’introduzione di aerosols e idruri gassosi
No full textEffect of the sheating gas on the performance of a Torch Integrated Sample Introduction System in ICP-AES
No full textInfluence of the operating parameters and of the sample introduction system on time correlation of line intensities using an axially viewed CCD-based ICP-AES system
No full textHeated-spray chamber-based low sample consumption system for inductively coupled plasma spectrometry
No full textA new high efficiency micro-sample introduction system for inductively coupled plasma spectrometry
No full textStudy of the absence of recondensation with low liquid delivery rates by using a cavity sheathing gas in inductively coupled plasma-atomic emission spectrometry
No full textDéveloppement d’un nouveau système à consommation totale d’échantillons à haute température pour les techniques à plasma par couplage inductif (ICP)
No full textA new high efficiency micro-sample introduction system for inductively coupled plasma spectrometry and its application to the analysis of Antarctic snow
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