Showing papers in "Spectrochimica Acta Part B: Atomic Spectroscopy in 2002"

TL;DR: An overview of gas discharge plasmas can be found in this paper, where the most important applications of these and related plasmmas are discussed, as well as their working principles.

TL;DR: In this article, the authors present a review of the history, design, operation and application of linear radio-frequency (r.f.)driven multipole collision cells and reaction cells in combination with inductively coupled plasma mass spectrometry.

TL;DR: A review of the current experimental approaches used for obtaining quantitative micro-analysis using the laser-induced breakdown spectroscopy (LIBS) technique can be found in this paper, where the influence on LIBS analytical performances of laser power, wavelength and pulse length, the proper choice of experimental geometry, the importance of ambient gas choice and the role of detectors for improving the precision of LIBS analysis are discussed.

TL;DR: In this article, a model of self-absorption effect in laser-induced plasma has been developed, with the aim of providing a tool for its automatic correction in the Calibration-Free algorithm recently developed for standardless analysis of materials by LIBS (Laser Induced Breakdown Spectroscopy).

TL;DR: Laser-induced breakdown spectroscopy has made significant progress towards becoming a commercial, deployed technology as discussed by the authors. But its historical development will be reviewed, using the transformation of the laser into commercial technology as a parallel.

TL;DR: In this article, a single and double pulse laser-induced breakdown spectroscopy (LIBS) was carried out on aluminum samples in air, with the aim to study possible dynamical mechanisms in different regimes.

TL;DR: In this article, a method was standardized for the dissolution of hair samples and analysis was carried out by inductively coupled plasma atomic emission spectrometry (ICP-AES), where hair samples were brought into solution by using a mixture of nitric acid and hydrogen peroxide.

TL;DR: In this paper, the combination of four-harmonic (266 nm) and fundamental (1064 nm) Nd:YAG laser pulses of the same irradiance was studied.

TL;DR: In this paper, the capabilities of laser-induced breakdown spectroscopy (LIBS) for rapid analysis of multi-component pharmaceutical tablets are illustrated using several examples, including the atomic line emission from an element present only in a particular component of the tablet (for instance, emission of phosphorus from the drug, or of magnesium from the lubricant) enables the quantitative analysis of that component.

TL;DR: The efficiency of microwave-assisted acid digestion of plants using different concentrations of nitric acid with hydrogen peroxide (30% v/v) was evaluated by measuring the residual carbon content (RCC) using inductively coupled plasma optical emission spectrometry (ICP-OES) with axial viewing as mentioned in this paper.

TL;DR: In this paper, a pre-concentration and determination methodology for mercury at trace levels in water samples was developed, which was successfully applied to the determination of mercury in tap water samples, at pH 9.2 mediated by micelles of the nonionic surfactant polyethyleneglycolmono-p-nonylphenylether (PONPE 5).

TL;DR: In this paper, a method was developed for the determination of trace elements in crude oil by inductively coupled plasma mass spectrometry (ICP-MS) after sample dissolution in toluene and subsequent ultrasonic nebulization (USN).

TL;DR: In this article, the authors discuss new analytical developments and possible applications of ICP-MS and LA-ICP-MS for quantitative determination of trace elements and in surface analysis for materials science.

TL;DR: In this article, a simple, robust and reliable analytical procedure for the determination of 15 elements, namely Ca, V, Cr, Mn, Co, Ni, Cu, Zn, Rb, Ag, Cd, Ba, Tl, Th and U, was developed.

TL;DR: In this paper, a procedure for preconcentration and determination of vanadium and copper in seawater using inductively coupled plasma optical emission spectrometry (ICP OES) is proposed.

TL;DR: In this paper, a method for the radial analysis of the plasma torch produced by the axial injection torch device at atmospheric pressure is proposed, which uses a fast high-resolution acquisition set-up including an intensified charge coupled device and an image rotation system, as well as a new data processing procedure based on the Abel inversion technique.

TL;DR: In this article, a Q-switched Nd:YAG laser at wavelengths 1064, 532 and 355 nm with maximum energies of 500, 100 and 60 mJ, respectively, and pulse duration of 7 ns with repetition rate of 1 Hz was used.

TL;DR: In this article, a wide spectral range time resolved laser-induced breakdown spectroscopy has been investigated to evaluate its potential for simultaneous determination of major, minor and trace concentrations in water.

TL;DR: In this article, a series of statements based on their own investigations is given as "facts" and another series of statement is made as "fictions" related to erroneous proposals on the functioning of modifiers and coatings in the pertinent literature.

TL;DR: In this paper, a laser-induced breakdown spectroscopy (LIBS) technique has been applied to detect the carbon content in fly ash, char and pulverized coal under high-pressure and high-temperature conditions.

TL;DR: In this article, two different types of carbon fibers were investigated: carbon microfibers and carbon nanofibers, and the characterization of fiber surfaces was achieved by photoelectron spectroscopy (XPS), contact angle measurements and titration.

TL;DR: In this paper, a statistical analysis of single-shot spectral data for laser-induced breakdown spectroscopy (LIBS) is presented, where the authors show that at optimal temporal delay, the LIBS signal was maximized for pulse energies within the saturation regime with respect to plasma absorption of incident energy.

TL;DR: In this paper, the authors report on the analyses of different types of artworks, such as medieval glazed Umbrian pottery and copper-based alloys from Roman and modern periods, performed by means of Laser Induced Breakdown Spectroscopy (LIBS).

TL;DR: The state-of-the-art of gas chromatography coupled with inductively coupled plasma mass spectrometry (GC-ICP MS) is comprehensively reviewed in this article.

TL;DR: In this paper, a scheme for fractionation of wine components and Fe, Cu and Zn determination in different fractions was presented, where the charge of the metal species was established using cation and anion exchange separation based on solid phase extraction.

TL;DR: In this paper, a general discussion about extraction and digestion procedures assisted by focused-microwave radiation applications involving inorganic, organic, and organometallic analytes in different types of samples are presented, taking into account recent literature data.

TL;DR: In this article, an open-path laser-induced plasma spectrometry has been used for elemental analysis at a distance of 45 m from the target, and the main variables influencing the signal response such as beam focal conditions, laser incidence angle and laser penetration depth have been identified and diagnosed on the basis of spectral signal-to-noise ratio considerations.

TL;DR: In this paper, a method for determination of trace metals in gasoline is proposed, which is based on combining electrothermal vaporization with inductively coupled plasma mass spectrometry, which minimizes the problems related to the introduction of organic solvents into the plasma.

TL;DR: In this paper, the integrated peak areas obtained from curvefitting closely match the Pu-239/Pu-240 isotopic ratios obtained from standard methods of thermal ionization mass spectrometry and gamma spectrometers.

TL;DR: In this article, a hybrid modeling network consisting of several Monte Carlo and fluid models was developed for a dc glow discharge typically used for mass spectrometry, in a mixture of Ar with 1% H2.