Showing papers in "Spectrochimica Acta Part B: Atomic Spectroscopy in 1998"

TL;DR: In this paper, a Q-switched pulsed Nd:YAG laser operating at infrared (1064 nm), visible (532 nm) and ultraviolet (266 nm) wavelengths has been used.

TL;DR: In this article, the authors investigated plasmas formed from solid aluminium alloys in air using a Nd:YAG laser in double-pulse mode, in view of the possibility of enhancing analyte line emissions.

TL;DR: A new generation of sector field mass spectrometers, with improved analytical figures of merit at even lower prices, is commercially available, giving a strong impetus to the development of inductively coupled plasma Mass Spectrometry (ICPMS) sector field instrument applications in the analytical community as discussed by the authors.

TL;DR: In this article, three different categories of analytical speciation of increasing analytical difficulty are proposed: computational approaches, direct species-specific and hybrid techniques, which are reviewed and critically assessed for biological materials.

TL;DR: In this paper, a normalization procedure for line ratios is presented for laser-induced plasma spectroscopy (LIPS) analysis of the main components (Si, Al, and Ca) in glasses utilized for vitrification of ashes from waste incineration.

TL;DR: In this article, a hyphenated technique-crossed immunoelectrophoresis in combination with laser ablation inductively coupled plasma (ICP)-mass spectrometry was described for the identification and quantitation of metal binding proteins in blood serum.

TL;DR: In this article, the authors discuss the capability of mass spectrometric methods for the trace analysis of inorganic materials with their ability to provide a very sensitive multielemental analysis for the determination of trace and ultratrace elements.

TL;DR: A tungsten-rhodium coating on the integrated platform of a transversely heated graphite atomizer is proposed as a permanent chemical modifier for the determination of Cd, Pb, and Se by electrothermal atomic absorption spectrometry as discussed by the authors.

TL;DR: A method for the determination of Cu, As, Se, Cd, In, Hg, Tl, Pb and Bi in waters and in biological materials by inductively coupled plasma mass spectrometry, after an on-line separation, is described in this article.

TL;DR: In this paper, a collisional-radiative model is developed for various levels of the sputtered copper atoms and their ions in an argon direct current glow discharge, used as an analytical source for optical emission spectrometry.

TL;DR: In this article, the instrumental design for coupling different liquid chromatographic systems such as ion, reversed phase, and size exclusion chromatography as well as capillary gas chromatography, with ICP-MS for the determination of element species is described.

TL;DR: In this paper, an instrumental method based on the use of secondary ion mass spectrometry (SIMS) is presented for the identification of uranium particles, and the determination of their isotope composition.

TL;DR: In this paper, a combination of an echelle spectrometer with a time-gated intensified charge coupled device (ICCD) camera for simultaneous measurements of spectral lines in wide ranges of the optical spectrum is presented.

TL;DR: In this article, the first determination of the isotope ratio (238/235) in an uranium sample by optical emission spectroscopy on a laser-produced plasma at reduced pressure (2.67 Pa) was presented.

TL;DR: Speciated isotope dilution mass spectrometry (SIDMS) as discussed by the authors improves accuracy in the determination of chemical species in samples by compensating for species transformations that occur in many of the steps of sample processing, including sampling process, storage, sample preparation and speciated measurement.

TL;DR: In this article, the fundamental characteristics and analytical performance of a new glow discharge emission source (GDES) for the determination of trace metals in flowing water were investigated. But the spectrum emitted from the tap water contained the basic atomic lines of the dissolved metals and OH band peaks.

TL;DR: In this article, the emission of various low-pressure microwave-induced plasmas created and sustained by a surfatron or by a Beenakker cavity has been studied after the introduction of molecular species (i.e. N2, CO2, SF6 and SO2).

TL;DR: In this paper, anion and cation exchange HPLC systems were used for the seperation of selenium and arsenic species in crude extracts of biological samples, and the signal-to-noise ratios obtained for these incompletely ionized elements in the argon ICP were further enhanced by continously introducing carbon as methanol via the mobile phase into the ICP.

TL;DR: In this paper, a review of the fundamental aspects and analytical applications of glow discharges is presented, and a systematic overview of the most important plasma processes and diagnostic techniques for glow discharge is discussed.

TL;DR: In this paper, the precision of the isotopic measurements of Pb and Sr is examined, and the time of measurement is optimally shared for each isotope, using a mathematical simulation, to provide the lowest theoretical analytical error.

TL;DR: In this article, an on-line Eu, Tb, Ho, Tm and Lu preconcentration and determination system implemented with inductively coupled plasma mass spectrometry (ICP-MS) associated to a flow injection (FI) method was studied.

TL;DR: Capillary electrophoresis-inductively coupled plasma mass spectrometry (CE-ICP-MS) and electrospray (ES) or ion spray (IS) mass analyzers are recently introduced techniques for elemental speciation as discussed by the authors.

TL;DR: A flow injection-inductively coupled plasma mass spectrometric (FI-ICP-MS) procedure, utilising ultrasonic nebulization with membrane desolvation (USN/MD), has been developed for the determination of plutonium (Pu) in seawater at fg l−1 concentration levels as mentioned in this paper.

TL;DR: The application of carbide-modified graphite atomizers (CMGAs) has been extensively discussed in the literature as mentioned in this paper, with a focus on the determination of the elements forming rather stable oxides such as Ge, Sn, Ga, In, B and Si.

TL;DR: In this paper, two combinations of pneumatic nebulizers and spray chambers were selected to obtain different Na effects, i.e., high R.F. power and low carrier gas flow rate were used to minimize the role of the plasma and to emphasize the contribution of the sample introduction system in the effect of Na in ICP-AES.

TL;DR: In this paper, particle-vaporization kinetics are simulated as a detailed function of operating conditions, fundamental properties and spatial location in the inductively coupled plasma, and as a function of several of the properties of the particles themselves: diameter, chemical composition and size distribution.

TL;DR: Bogaerts et al. as discussed by the authors calculated the optical emission spectrum of the argon atomic lines in a glow discharge, using a collisional-radiative model for argon, which was recently developed.

TL;DR: Recent progress in flow injection on-line separation and preconcentration techniques for electrothermal atomic absorption spectrometry (ETAAS) is reviewed in this paper, stressing the advancements made within the past 2 or 3 years.

TL;DR: In this paper, the effect of laser parameters (wavelength, pulse duration, and power density) on the ablated mass was investigated for ICP-AES analyte emission line intensity.

TL;DR: In this paper, the principal processes taking place in graphite tubes modified with high-melting carbides are critically discussed and the reasons for changes in the sensitivity and lifetime of the graphite tube are discussed.