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Suppression of in-cell generated interferences in a reaction cell ICP-MS by bandpass tuning and kinetic energy discrimination
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hattendorf, Bodo Guenther, Detlef |
| Copyright Year | 2004 |
| Abstract | The efficiency of kinetic energy discrimination and bandpass tuning for the suppression of potentially interfering product ions, formed by ion–molecule reactions in a dynamic reaction cell of an inductively coupled plasma mass spectrometer is compared. Suppression of the oxide ions from Sc+, Y+, La+ and Th+, formed in reactions with oxygen impurities in non-reactive gases, have been used as test system to determine the suppression efficiency of the in-cell generated ions in dependence of the operating parameters of a dynamic reaction cell. Kinetic energy discrimination was investigated by successively lowering the pole bias voltage of the reaction cell quadrupole below the pole bias of the analyser quadrupole to create a potential barrier of increasing height. For bandpass tuning, the transmission window of the reaction cell quadrupole was successively narrowed to determine the cut-off m/z, where precursors of the product ions are rejected. The efficiency of interference suppression and the elemental sensitivity are in all cases decreasing with m/z of the precursor ions. Both approaches allow the suppression of the in-cell generated ScO+ and YO+, while LaO+ and to a greater extent ThO+ cannot be fully eliminated without compromising elemental sensitivity significantly. LaO+ and ThO+ are observed at levels, which are by a factor of two and six higher than in standard operation of the ICP-MS. Elemental sensitivity is higher by approximately a factor of five and the abundance of the cell produced ions is reduced more effectively with the bandpass tuning approach when compared to kinetic energy discrimination. |
| Starting Page | 600 |
| Ending Page | 606 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| Volume Number | 19 |
| Alternate Webpage(s) | http://lib3.dss.go.th/fulltext/Journal/J.Anal.%20Atom.Specto/2004/2004v19no5/600-606.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/B312155K |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
