Atomic Spectrometry Update Advances in Atomic Absorption and Fluorescence Spectrometry and Related Techniques

Abstract

time. Included in this review are fundamental processes and 1.2.4. Interferences instrumentation in the areas of atomic absorption and atomic 1.2.4.1. Spectral interferences fluorescence spectrometry, together with advances in related 1.2.4.2. Chemical modifiers-general techniques such as atomic magneto-optical rotation 1.2.4.3. Chemical modifiers-palladium spectrometry and laser-enhanced ionization. The review of 1.2.4.4. Other chemical modifiers Atomic Emission Spectrometry may be found in J. Anal. At. 1.2.5. Developments in technique Spectrom., 1997, 12, 263R. Once again this year a number of 1.3. Chemical Vapour Generation changes have been implemented to aid presentation. Following 1.3.1. Hydride generation the inclusion of tables to present information in Section 1.2. 1.3.1.1. General studies of fundamentals, techniques and Electrothermal Atomization last year, we have continued the instrumentation practice in this year's review to facilitate easier and quicker 1.3.1.2. Determination of individual elements access to material. The sub-headings have also been modified 1.3.2. Mercury by cold vapour generation to reflect the material presented in the review, although in 1.3.3. Volatile organic compound generation and metal general the format is the same as in previous years. This year vapour separation for the first time references are present in the standard format. 1.4. Spectrometers Comments as to these changes and possible improvements for 1.4.1. Light sources future reviews are welcomed by the review coordinator. 1.4.2. Continuum source and simultaneous multi-element AAS 1. ATOMIC ABSORPTION SPECTROMETRY 1.4.3. Background correction 1.1. Flame Atomization 1.4.4. Detectors 1.5.Instrument Control and Data Processing Over the past year there have been few developments of note 1.5.1. Instrument control in the field of pure FAAS. Nevertheless, flames continue to 1.5.2. Data processing play a major part in the applications of AAS to analytical problems. In last year's Atomic Spectrometry Updates1 flames were used in 42% of papers devoted to applications; in the *Review Co-ordinator, to whom correspondence should be addressed.same period electrothermal atomization was used in 45% and

Hydroxyl radical probe of the surface of lysozyme by synchrotron radiolysis and mass spectrometry

“…Common approaches such as fluorescence or absorption spectroscopy probe the structures of proteins primarily at aromatic residues, or specific residues that have been tagged or modified to absorb or emit radiation 2. Absorbance spectroscopy3 can be used to measure the average exposure of these residues to the bulk solvent but the absorbance of residues partly shielded from the solvent are far less sensitive to these measurements. Flurorescence spectroscopy3 is a more sensitive technique but the fluorescence of aromatic residues can vary in an unpredictable manner and is complicated when multiple aromatic residues are present.…”

Iridium and Rhodium as Permanent Chemical Modifiers for the Determination of Ag, As, Bi, Cd, and Sb by Electrothermal Atomic Absorption Spectrometry

“…Among the drawbacks is the possibility of multiple peaks, due to the formation of a nonhomogeneous layer, overstabilization for some analytes, limitations in the parameters of the temperature program, and applications only to relatively simple samples (2). As a consequence, it is important to study the behavior of real samples in metal-coated tubes (4).…”

Independent component analysis algorithms for spectral decomposition in UV/VIS analysis of metal-containing mixtures including multimineral food supplements and platinum concentrates

“…One of the most common methods for determination of metals is atomic spectroscopy (regardless of whether chemometric algorithms are used for modelling of experimental data or not). [4][5][6][7][8][9][10][11] A broad range of multivariate methods could be used either to directly quantify several metals or to interpret results of classical methods. For example, the combination of atomic emission spectroscopy with parallel factor analysis (PARAFAC), analysis of variance (ANOVA) or principal component analysis (PCA) is extremely helpful to increase efficiency of metal analysis.…”