Atomic emission spectrometric detection limits and noise power spectra of argon inductively coupled plasma discharges formed with laminar- and tangential-flow torches

1989 ◽  
Vol 4 (6) ◽  
pp. 499 ◽  
Author(s):  
Akbar Montaser ◽  
R. H. Clifford ◽  
S. A. Sinex ◽  
S. G. Capar
Keyword(s):  
Inductively Coupled Plasma ◽  
Power Spectra ◽  
Detection Limits ◽  
Atomic Emission ◽  
Noise Power ◽  
Plasma Discharges ◽  
Inductively Coupled ◽  
Tangential Flow

Fourier Deconvolution of Overlapping Line Pairs in Inductively Coupled Plasma-Atomic Emission Spectrometry

1989 ◽  
Vol 43 (1) ◽  
pp. 96-103 ◽  
Author(s):  
Eric H. Van Veen ◽  
M. Pieter Goudzwaard ◽  
Margaretha T. C. De Loos-Vollebregt ◽  
Leo De Galan
Keyword(s):  
Inductively Coupled Plasma ◽  
Gaussian Approximation ◽  
Signal To Noise Ratio ◽  
Detection Limits ◽  
Atomic Emission ◽  
Emission Lines ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry ◽  
Spectral Window ◽  
Inductively Coupled

A deconvolution procedure utilizing Fourier transformation has been developed to reduce line overlap in ICP-AES. Line broadening is caused by physical processes and by instrumental broadening. Convenient deconvolution, however, turns out to be restricted to broadening common to the emission lines in the spectral window, i.e., to instrumental broadening. Deconvolution for the “true” instrumental broadening function and for a Gaussian approximation to this function yields similar results, but the former allows for fast automated data processing with regard to any spectral region and sample composition. A straightforward procedure is reported for the determination of this function independent of wavelength. At the present noise level, a twofold reduction in linewidth can be achieved for emission lines having a small physical width in comparison to the instrumental width. With data acquired from both a high- and a medium-resolution monochromator, results from overlapping line pairs show linear analytical curves and improved detection limits. Due to the decrease in signal-to-noise ratio on deconvolution, the detection limits measured for isolated lines cannot be attained.

Evaluation of the Axially Viewed (End-on) Inductively Coupled Argon Plasma Source for Atomic Emission Spectroscopy

1979 ◽  
Vol 33 (6) ◽  
pp. 584-591 ◽  
Author(s):  
D. R. Demers
Keyword(s):  
Inductively Coupled Plasma ◽  
Matrix Effects ◽  
Argon Plasma ◽  
Detection Limits ◽  
Plasma Source ◽  
Atomic Emission ◽  
Orifice Diameter ◽  
Aqueous Samples ◽  
Inductively Coupled ◽  
Optimal Observation

A comparison of an “end-on” viewed argon inductively coupled plasma (ICP) operated in the horizontal position with the conventional “side-on” viewed argon ICP was carried out using the same experimental setup. The end-on ICP required an air cutoff stream located toward the tip of the luminous discharge, to protect the optics and to increase linearity ranges, and the orifice diameter of the central tube of the torch was widened to 1.9 mm, to improve line/background ratios. With the end-on viewed plasma the linearity ranges, the susceptibility to solute vaporization and to ionization matrix effects, and the detection limits in an organic solvent were insignificantly different from those observed with the side-on viewed plasma. Detection limits with aqueous samples were always significantly lower with the end-on viewed plasma, usually five- to tenfold lower, in a few instances, 20-fold lower. With the end-on viewed plasma the optimal observation region for both single and simultaneous multielement analysis is one and the same and is extremely easy to locate.

Relationship between Detection Limits and Energy Quantities in Atomic Emission Spectrometry

1994 ◽  
Vol 48 (5) ◽  
pp. 587-591 ◽  
Author(s):  
Sten Yngström
Keyword(s):  
Inductively Coupled Plasma ◽  
Transition Probabilities ◽  
Detection Limits ◽  
Atomic Emission ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Spectral Line Intensity ◽  
Inductively Coupled ◽  
Intensity Measurements ◽  
Plasma Experiment

A relationship involving detection limits of ionic lines in an inductively coupled plasma experiment is shown to derive from principles applied in determining atomic transition probabilities from intensity measurements in arc experiments. A new theory of spectral line intensity has been previously shown to be supported by the arc experiments and is now shown to be consistent with the results of the detection limit ICP experiment.

A New Desolvation System for Use with Capacitatively Coupled Microwave Plasma and Inductively Coupled Plasma-Atomic Emission Spectrometry

1989 ◽  
Vol 43 (3) ◽  
pp. 425-430 ◽  
Author(s):  
H. Uchida ◽  
W. R. Masamba ◽  
T. Uchida ◽  
B. W. Smith ◽  
J. D. Winefordner
Keyword(s):  
Inductively Coupled Plasma ◽  
Microwave Plasma ◽  
Detection Limits ◽  
Atomic Emission ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled ◽  
Pneumatic Nebulizer

A compact and highly efficient desolvation system with a pneumatic nebulizer was applied to capacitatively coupled microwave plasma and inductively coupled plasma-atomic emission spectrometry. Approximately 50% of the analyte (Mn) was introduced to the plasma, and 50 (CMP) and 16 (ICP) times improvement of the sensitivity could be achieved. In spite of slightly poorer stability caused by larger aerosol size, detection limits were 17 (CMP) and 10 (ICP) times superior to results achieved with conventional pneumatic nebulization.

Noise power spectra of the inductively coupled plasma

1980 ◽  
Vol 35 (9) ◽  
pp. 535-546 ◽  
Author(s):  
Gary L. Walden ◽  
James N. Bower ◽  
Seif Nikdel ◽  
David L. Bolton ◽  
James D. Winefordner
Keyword(s):  
Inductively Coupled Plasma ◽  
Power Spectra ◽  
Noise Power ◽  
Inductively Coupled

Microliter Sample Introduction for ICP-AES

1985 ◽  
Vol 39 (3) ◽  
pp. 542-545 ◽  
Author(s):  
Arthur J. Faske ◽  
Kimberley R. Snable ◽  
Andrew W. Boorn ◽  
Richard F. Browner
Keyword(s):  
Inductively Coupled Plasma ◽  
Detection Limits ◽  
Bovine Liver ◽  
Atomic Emission ◽  
Sample Volume ◽  
Sample Introduction ◽  
Emission Spectrometry ◽  
National Bureau ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled

A simple Flow Injection/Inductively Coupled Plasma-Atomic Emission Spectrometry system is described. The analytical performance, in terms of linearity, precision, and detection limits, was investigated for both aqueous and organic solvents. Acceptable detection limits were obtained with the use of approximately one-hundreth of the minimum sample volume required for continuous aspiration. Some deterioration of detection limits, however, was observed. The suitability of this system to biological samples was demonstrated by the analysis of iron- and cobalt-rubredoxins and National Bureau of Standards' Bovine Liver standard reference material.

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