Showing papers in "Spectrochimica Acta Part B: Atomic Spectroscopy in 1983"

TL;DR: In this paper, a dual monochromator detection system was used to study the correlation between two emission signals recorded simultaneously as several ICP parameters were varied, and the behavior of the signal formed by dividing the analyte and reference signals was also measured.

TL;DR: In this paper, the use of an improved microwave-induced plasma (MIP) and an inductively coupled plasma (ICP) as ion sources for mass spectrometry is described.

TL;DR: In this article, a laser-inductively coupled plasma (ICP) system for the direct analysis of solid samples was constructed by combining a Q-switched or normal laser and an ICP apparatus.

TL;DR: In this article, two modes of operation, boundary layer sampling and bulk plasma sampling, are identified, and the future potential of the technique in both modes of operations is discussed, as well as the possible application of the inductively coupled plasma to plasma source mass spectrometry.

TL;DR: In this paper, a method for simultaneous determination of 14 metals (Al, Ca, Cd, Co, Cr, Mn, Ni, Pb, V, W, and Zn) has been developed by applying d.c. plasma-atomic emission spectroscopy.

TL;DR: In this article, a theoretical framework is constructed to explain quantitatively analyte and argon excited level densities in inductively-coupled plasmas and an essentially new description of the discharge is proposed in terms of partial LTE and the saturation regime.

TL;DR: In this paper, the authors characterized an atmospheric pressure helium microwave-induced plasma (M1P) and discussed the excitation mechanisms in the MIP, some spatial distributions of emission intensities of various species, and compared with those of the argon and mixed gas (helium/argon) MIP's sustained under the same operating conditions.

TL;DR: In this article, the possibilities of multielement FIA-ICP for signal-to-background measurement, calibration by standard additions and exponential dilution, and separation methods are evaluated.

TL;DR: In this paper, the number densities of metastable argon and ground state calcium atom and ion in an atmospheric pressure argon inductively coupled plasma ICP have been observed in absorption and emission measurements.

TL;DR: In this paper, a limit of detection for beryllium in air of 0.5 ng g ( w w ), which is one-third of the OSHA limit for the 8-h average exposure to BER, was measured using laser-induced breakdown spectroscopy.

TL;DR: In this article, it is shown that the state of an ICP plasma can be adequately described by a measured electron density distribution, even though the plasma is not in full local thermal equilibrium (LTE).

TL;DR: In this paper, glow discharge emission spectrometry at the National Physical Research Laboratory of the Council for Scientific and Industrial Research (CPSI) is described in more detail, e.g. the use of a fluorescent atomic vapour as spectral line isolator and the microwave auxiliary discharge to augment excitation of sputtered material.

TL;DR: A Bausch & Lomb-ARL Model 34000 simultaneous inductively coupled plasma (ICP) emission spectrometer was interfaced with a high pressure liquid chromatograph to serve as a multi-element-specific detector.

TL;DR: In this article, the separation and concentration properties of a poly(dithiocarbamate) resin combined with the generation of hydride into an inductively coupled plasma were examined for the determination of As, Bi, Sb, Se, Sn, and Te in urine.

TL;DR: In this article, a review of important improvements in atomic absorption instrumentation particularly of benefit for the performance of analyses in biological materials is presented, followed by examples for the optimization of the initial steps of analytical procedures and a new instrumental concept for the ultratrace analysis of mercury by a cold-vapour technique.

TL;DR: In this article, the determination of trace metals in new and used oils and compounding elements in lubricating oil additives using an inductively coupled plasma (ICP) was described, and the overall precision for determination of wear metals was 5-10% and 2-5% for additive elements in used lubricating oils at the 95% confidence level.

TL;DR: In this paper, a graphite furnace was used for metal specific detection of the evolved species of magnesium oxide, where the internal temperature of the sample holder (graphite cup) was continuously monitored by a recording optical pyrometer in the 560-2400°C range, when solution and solid samples were heated at 7-16°C s −1 rate.

TL;DR: The independent effects of analyte loss by diffusion, thermal expansion, and expulsion caused by gas evolution from the matrix have been studied in this paper, and strong dependencies also are exhibited by the appearance temperature of the matrix gas and the evolution rate of the gas from the surface.

TL;DR: In this article, the power of non-clasical luminescence techniques to produce more useful analytical results is illustrated for micelle-enhanced/sensitized room temperature phosphorescence, a liquid chromatographic/micelle-stabilized phosphorescence detector, and synchronous wavelength scanning/second derivative/micellabeled phosphorescence.

TL;DR: In this paper, the determination of potassium, phosphorus, calcium, magnesium, zinc and manganese in soil extracts is reported at an analysis rate of 200 samples h−1 at a sample rate of 120 samples H−1.

TL;DR: In this paper, a graphite rod electrothermal atomizer is modified to vaporize micro-volume samples into an inductively-coupled plasma discharge, which is used to detect arsenic, chromium, copper, nickel, and selenium.

TL;DR: In this paper, the authors reviewed and assessed several alternative approaches in terms of their performance and analytical capability and discussed the potential for future torch modification and low-flow, low-power ICP instrumentation.

TL;DR: In this paper, inductively coupled plasma spectroscopy is evaluated for the quantitative determination of trace elements in bio-medical environmental materials, and ICP and signal measurement parameters selection and the need for standard reference materials are described.

TL;DR: In this article, the authors describe work being carried out at the Geoscience Laboratories, Ontario Geological Survey, on the determination of rare earth elements at both high concentration and chondrite levels by inductively coupled plasma optical emission spectrometry.

TL;DR: In this paper, an experimental approach is presented to establish the power balance for three inductively-coupled plasmas: a conventional ICP operating on 231 min − 1 of argon and two ICPs requiring only 11 min −1 of argons as a result of external cooling by air or water.

TL;DR: In this paper, the relative intensity distributions of the (positive or negative) cluster and atomic ions were analyzed by laser microprobe mass analysis (LAMMA) for powdered titanium oxides of different stoichiometry.

TL;DR: In this article, Cadmium, previously a difficult determination in inorganic matrices with the graphite furnace, is shown to be easy to determine with the combination of the stabilized temperature platform furnace, appropriate matrix modification and Zeeman background correction.

TL;DR: The selective MED-fluorine channel greatly simplifies the interpretation of complicated FID and ECD capillary chromatograms and allows for straight-forward quantitation of perfluorooctanoate.

TL;DR: In this article, the authors evaluated the performance characteristics of current sample preparation procedures for ICAP-AES analysis of biological material, including extraction, solubilization, pressure digestion, and wet and dry ashing.

TL;DR: In this paper, the present state of the availability and quality of the geostandards is reviewed for major and trace elements for both trace elements and major and common trace elements.