Atomic fluorescence spectrometry

Abstract

tempt to review briefly, the fundamental aspects, the instrumental requirements, and the analytical uses of atomic fluorescence spectrometry.

Environmental Impact of Cadmium: A Review by the Panel on Hazardous Trace Substances

“…Recent modifications of the method, such as atomic fluorescence flame spectrometry (257) and flameless atomic absorption, give promise of lowering sensitivity limits for cadmium to well below 1 ppb Cd (258). Neutron Activation Many elements, when subjected to bombardment by neutrons in a reactor, form radioactive isotopes.…”

Ultratrace determination of mercury in water following EN and EPA standards using atomic fluorescence spectrometry

“…From theoretical considerations [15] Winefordner et al showed that the fluorescence radiance, B F , is linearly related to the number of atoms in the cell, n 0 , and linearly related to the effective source intensity, I 0 . Winefordner [12] in his paper concluded that in non-flame atomizers AFS should afford significantly better detection limits than AAS and related the effect to the type of noise limiting AAS (source flicker) and AFS (shot noise from the detector). The absolute and relative detection limits obtained are clearly significantly lower than those obtained by AAS and are approximately 0.5 ng L -1 .…”

“…Its fundamentals were investigated and described [11] only shortly after AAS has been commercially introduced to instrumental analysis, but its application to routine element analysis in flame atomizers was limited. If measurements are performed in argon-flushed cells after analyte-matrix separation, however, AFS has distinct advantages over AAS [12]. These are predominantly spectrophotometric detection limits, which are at least an order of magnitude superior to those of AAS with specific light source and detector, and a dynamic spectrometric working range of 4 to 5 orders of magnitude.…”

Development of a High Purity Filter for High Temperature Particulate Sampling and Analysis

“…As a reference for evaluating filter purity, we computed minimum detection levels of 34 elements from the best AAS and FES sensitivities, 4 ' 5 assuming the use of 25 ml of solvent to extract a filter weighing 0.85 g. These levels for several elements are also listed in Table II. A comparison of these minimum detection levels with the extractable impurity levels in the high-purity filters indicates that almost all purity requirements for optimum AAS and FES analysis have been achieved.…”