The determination of lead in air by flameless atomic absorption spectrophotometry

Trace organic components as fingerprints in gas chromatographic identification of spilled asphalts

“…Nickel and Vanadium Results. The asphalt samples (0.904 and 1.308 g) were dissolved in an xylene and chloroform (20 + 8) mixture and analyzed by atomic absorption utilizing an HGA graphite furnace (14,15). The nickel and vanadium contents in the source sample were 39 and 12 Mg/g; values in the river sample were 43 and 14 µg/g, respectively.…”

“…Others (9)(10)(11), dealing with diffusion and oxygen consumption, have treated the film as a homogeneous mass. However, when dealing with carbonaceous substrates, the analyses of the same phenomena have been restricted to qualitative descriptions of the effects of film thickness on the uptake rate (12)(13)(14)(15)(16).…”

Determination of subnanogram per cubic meter concentrations of metals in the air of a trace metal clean room by impaction graphite furnace atomic absorption and laser excited atomic fluorescence spectrometry

“…Traditional methods of metal determination in the atmosphere involve collection of particulates on some form of filter system, by pulling a known volume of air for a preset time, digestion of the filter, and subsequent analysis, typically by atomic spectrometric techniques (5)(6)(7)(8)(9)(10). The disadvantages * Author to whom correspondence should be sent.…”

Determination of metals in atmospheric particulates using low-volume sampling and flameless atomic absorption spectrometry

“…The techniques of emission spectrometry (6-9), X-ray fluorescence spectrometry (10)(11)(12)(13)(14), neutron activation analysis (15)(16)(17)(18)(19)(20) and conventional flame atomic absorption spectrometry (21)(22)(23)(24)(25)(26) have been widely used to characterize metallic concentrations of aerosols. More recently, flameless methods have been developed (27)(28)(29)(30) which greatly reduce sampling times and volumes because of the improved sensitivity over flame atomization methods. However, these studies have been limited to determinations of the volatile metals, e.g., lead and cadmium.…”