Furnace atomization plasma excitation spectrometry: effects of sodium chloride and sodium nitrate on lead and silver emission

Hettipathirana, Terrance D.; Blades, Michael W.

doi:10.1039/ja9930800955

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…1 is a schematic diagram of the FAPES source. Compared with the source previously used in our laboratory, 10,11,15,22,23 the new HGA-500 based source has reduced void volume that allows more efficient and uniform cooling of the graphite tube. This source has a faster heating rate (about 1500 ‡C s 21 ) allowing the atomic population to build up rapidly, thereby creating a high instantaneous atomic concentration in the atomizer volume and increasing analytical sensitivity.…”

Section: Methodsmentioning

confidence: 99%

Analyte ionization in the furnace atomization plasma excitation spectrometry source ? spatial and temporal observations

LeBlanc

Blades

2001

J. Anal. At. Spectrom.

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Section: Methodsmentioning

confidence: 99%

Analyte ionization in the furnace atomization plasma excitation spectrometry source ? spatial and temporal observations

LeBlanc

Blades

2001

J. Anal. At. Spectrom.

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“…Apart from the usefulness of such figures of merit as the LOD, the robustness of the source is of paramount importance. Interferences due to EIEs are severe in both FANES and FAPES , emission sources, with as little as 2 μg of NaCl causing suppression of signals in FANES. Although rf FAPES devices are generally less affected by the presence of EIEs, there are reports that even sub microgram amounts of NaCl perturb signals .…”

Section: Resultsmentioning

confidence: 99%

Furnace Atomization Plasma Ionization Mass Spectrometry

Guevremont

1997

Anal. Chem.

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Development and initial characterization of FAPES as an ion source for elemental mass spectrometry is presented. The source is configured with an integrated contact cuvette in which a 40 MHz He plasma is sustained at atmospheric pressure. A differentially pumped interface consisting of a stainless steel sampling tube (0.5 mm i.d.) and tandem skimmer cone serves to sample the plasma from the open end of the cuvette. Mass spectra, characterizing plasma species with the furnace at ambient and elevated temperatures, are relatively structureless and show no evidence of He(+), He(2)(+), or carbonaceous ions. Transient ion signals, generated during the atomization of a number of analytes introduced in solution form, reveal that the plasma contains sufficiently energetic species to ionize elements having ionization potentials as high as 10.45 eV (iodine). Significant ionization does not occur in the absence of the plasma, nor in the extraction interface. Using Pb as a test element, acceptable isotopic abundances can be obtained, with an estimated absolute limit of detection of 10 pg (2 ng/mL relative). Future directions are discussed.

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“…Vaporization, atomization, and excitation mechanisms were also discussed. Hettipathirana and Blades (343) carried out detailed studies on the suppressive interference effects of sodium salts on the FAPES signals for Ag and Pb. Sturgeon and Willie (793), using a FAPES source built from a conventional end-heated Massmann-type ET A, showed that the FAPES source is useful for the excitation of molecular species that form in ETAs.…”

Section: Other Techniquesmentioning

confidence: 99%