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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Hiraoka, Kenzo Chen, Lee Chuin Yu, Zhan |
| Copyright Year | 2010 |
| Abstract | In this paper, we demonstrate a mass spectrometric method for sensitive and rapid detection of gaseous hydrogen peroxide (H2O2) using an ambient sampling chemi/chemical ionization source. Metastable helium atoms (He*) were used as the primary ionizing agents and were generated from a dielectric barrier discharge (DBD) source. A gaseous sample of ambient air was drawn into an enclosed ionization chamber and subsequently mixed with metastable species at sub-atmospheric pressure. O2− ions produced from the ionization of ambient air readily react with H2O2 to form the stable [H2O2 + O2]− cluster ion. A detection limit of 0.8 ppbv was achieved by coupling the ion source to a commercial time-of-flight mass spectrometer. The construction of the ion source is simple, and vapors from bulky objects can also be analyzed directly by placing the sample close to the sampling nozzle. The versatility of this ion source for the application in rapid security screening is demonstrated by non-invasive detection of an aqueous solution of hydrogen peroxide concealed in closed beverage bottles. |
| Starting Page | 897 |
| Ending Page | 900 |
| Page Count | 4 |
| File Format | HTM / HTML PDF |
| ISSN | 17599660 |
| Volume Number | 2 |
| Issue Number | 7 |
| Journal | Analytical Methods |
| DOI | 10.1039/c0ay00170h |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Oxygen Hydrogen peroxide Dielectric barrier discharge Ionization Ion Ionization chamber Helium Time-of-flight mass spectrometry Chemical ionization Metastability |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry Engineering Chemical Engineering |
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