Abstract
Positive and negative ion mass spectra of arsenic trioxide (As2O3) and arsenic pentaoxide (As2O5) have been obtained by single-step laser desorption/ionization time-of-flight mass spectrometry. Pulsed UV radiation at 266 nm was used for the simultaneous desorption and ionization of the solid sample. High-mass cluster ions that are unique to the oxidation state of each oxide sample appear in the negative ion mass spectra. The As2O3 produces As3O5 -, while the As2O5 yields As3O8 -. The formation of unique negative cluster ions presents the capability for arsenic oxidation state speciation by laser desorption/ ionization mass spectrometry. The ability of time-of-flight mass spectrometry to examine the relative amounts of each arsenic oxide present in a series of mixtures is discussed. Application of our speciation technique to a model incinerator sample is demonstrated.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4052-4059 |
| Number of pages | 8 |
| Journal | Analytical Chemistry |
| Volume | 68 |
| Issue number | 22 |
| State | Published - Nov 15 1996 |
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ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Speciation of Arsenic Oxides Using Laser Desorption/Ionization Time-of-Flight Mass Spectrometry. / Allen, Todd M.; Bezabeh, Dawit Z.; Smith, Catherine H.; McCauley, Eileen M.; Jones, A. Daniel; Chang, Daniel P Y; Kennedy, Ian M.; Kelly, Peter B.
In: Analytical Chemistry, Vol. 68, No. 22, 15.11.1996, p. 4052-4059.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Speciation of Arsenic Oxides Using Laser Desorption/Ionization Time-of-Flight Mass Spectrometry
AU - Allen, Todd M.
AU - Bezabeh, Dawit Z.
AU - Smith, Catherine H.
AU - McCauley, Eileen M.
AU - Jones, A. Daniel
AU - Chang, Daniel P Y
AU - Kennedy, Ian M.
AU - Kelly, Peter B.
PY - 1996/11/15
Y1 - 1996/11/15
N2 - Positive and negative ion mass spectra of arsenic trioxide (As2O3) and arsenic pentaoxide (As2O5) have been obtained by single-step laser desorption/ionization time-of-flight mass spectrometry. Pulsed UV radiation at 266 nm was used for the simultaneous desorption and ionization of the solid sample. High-mass cluster ions that are unique to the oxidation state of each oxide sample appear in the negative ion mass spectra. The As2O3 produces As3O5 -, while the As2O5 yields As3O8 -. The formation of unique negative cluster ions presents the capability for arsenic oxidation state speciation by laser desorption/ ionization mass spectrometry. The ability of time-of-flight mass spectrometry to examine the relative amounts of each arsenic oxide present in a series of mixtures is discussed. Application of our speciation technique to a model incinerator sample is demonstrated.
AB - Positive and negative ion mass spectra of arsenic trioxide (As2O3) and arsenic pentaoxide (As2O5) have been obtained by single-step laser desorption/ionization time-of-flight mass spectrometry. Pulsed UV radiation at 266 nm was used for the simultaneous desorption and ionization of the solid sample. High-mass cluster ions that are unique to the oxidation state of each oxide sample appear in the negative ion mass spectra. The As2O3 produces As3O5 -, while the As2O5 yields As3O8 -. The formation of unique negative cluster ions presents the capability for arsenic oxidation state speciation by laser desorption/ ionization mass spectrometry. The ability of time-of-flight mass spectrometry to examine the relative amounts of each arsenic oxide present in a series of mixtures is discussed. Application of our speciation technique to a model incinerator sample is demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=0030588619&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030588619&partnerID=8YFLogxK
M3 - Article
C2 - 8916457
AN - SCOPUS:0030588619
VL - 68
SP - 4052
EP - 4059
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0003-2700
IS - 22
ER -