Ion-attachment mass spectrometry
{{Short description|Form of mass spectrommetry}}
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|acronym = IAMS
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|related = Chemical ionization
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Ion-attachment mass spectrometry (IAMS) is a form of mass spectrometry that uses a "soft" form of ionization similar to chemical ionization in which a cation is attached to the analyte molecule in a reactive collision:
:
Where M is the analyte molecule, X+ is the cation and A is a non-reacting collision partner.{{cite journal |title=Lithium ion attachment mass spectrometry: Instrumentation and features|journal=Review of Scientific Instruments|volume=72|issue=5|pages=2248|bibcode=2001RScI...72.2248S |doi=10.1063/1.1362439 |author1=P. Christopher Selvin1 |author2=Toshihiro Fujii|year=2001}}
Principle
This technique is applicable to gases or any materials that can be vaporized. It uses a non-fragmenting non-conventional ionisation mode, by attachment of a lithium (or alkaline) ion to the gas to be analysed with a more traditional mass filter. This instrument is more dedicated to analysis of moderately-sized molecules such as organic or aromatic compounds.{{cite journal|title=Aromatic ion attachment mass spectrometry: an ion-molecule reaction for organosulfur analysis|journal=Organic Mass Spectrometry}}
Applications
Currently, it is used industrially to verify, with a high throughput, the concentrations of brominated flame retardants (BFR) in plastics in compliance with European RoHS (Restriction of Hazardous Substances) regulation in place since 2006. The banned molecules include PBB and PBDE, whose concentration should not exceed 0.1% w/w.{{cite web | title = The guide of environmental quality assurance for a supplier of JVC | date = July 2006 | publisher = JVC | url = http://www.jvc-victor.co.jp/company/environ/wr/gprocure/eqaguide_e.pdf }}{{dead link|date=January 2018 |bot=InternetArchiveBot |fix-attempted=yes }}Pittcon 2006; Poster by Y. Shiokawa; The Rapid Analysis of Brominated Flame Retardants in Resin Used for Electrical Appliances by Ion Attachment Mass Spectrometry.{{cite journal|title=State of bromine based flame retarding agent mixing and its countermeasure|journal=Sangyo to Kankyo}}
IAMS has also been used to analyze diesel exhaust particles,{{cite journal |vauthors=Masaki H, Chen L, Korenaga T |title=Direct analysis of diesel exhaust particles by fragmentation-free mass spectrometry using ion attachment mass spectrometry |journal=Environmental Sciences |volume=13 |issue=6 |pages=347–52 |year=2006 |pmid=17273150 }} in ceramic processing {{cite journal |vauthors=Tsugoshi T, Nagaoka T, Nakamura M, Shiokawa Y, Watari K |title=Application of ion attachment mass spectrometry to evolved gas analysis for in situ monitoring of porous ceramic processing |journal=Anal. Chem. |volume=78 |issue=7 |pages=2366–9 |year=2006 |pmid=16579621 |doi=10.1021/ac0518248}} and in critical silicon etching during semiconductor manufacturing.{{citation needed|date=December 2019}}
References
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Bibliography
{{refbegin}}
- {{cite journal | title = Development of ion attachment mass spectrometry and its applications | author1 = Y. Shiokawa | author2 = M. Nakamura | author3 = H. Maruyama | author4 = Y. Hirano | author5 = Y. Taneda | author6 = M. Inoue | author7 = T. Fujii | journal = Bunseki Kagaku | volume = 53 | issue = 6 | pages = 475–489 | year = 2004 | language = ja | doi = 10.2116/bunsekikagaku.53.475 | doi-access = free }}
- {{cite journal | title = In situ analysis of perfluoro compounds in semiconductor process exhaust: Use of Li+ ion-attachment mass spectrometry|author1=M. Nakamura |author2=K. Hino |author3=T. Sasaki |author4=Y. Shiokawa |author5=T. Fujii | doi = 10.1116/1.1376704 | year = 2001 | journal = Journal of Vacuum Science and Technology A | volume = 19 | pages = 1105 | issue = 4 |bibcode=2001JVSTA..19.1105N }}
- {{cite journal | title = Lithium ion attachment mass spectrometry for on-line analysis of trace components in air: direct introduction |author1=Fujii T. |author2=Selvin P.C. |author3=Sablier M. |author4=Iwase K. | doi = 10.1016/S1387-3806(01)00469-9 | year = 2001 | journal = Journal of Vacuum Science and Technology A | volume = 19 |issue=1 | pages = 39–45 |bibcode=2001IJMSp.209...39F }}
- {{cite journal | title = Mass Spectrometric Detection of Ionic and Neutral Species During Highly Preheated Air Combustion by Alkali Element Ion Attachment |author1=T. Ishiguro |author2=A. Matsunami |author3=K. Matsumoto |author4=K. Kitagawa |author5=N. Arai |author6=A. K. Gupta | journal = Journal of Engineering for Gas Turbines and Power | doi = 10.1115/1.1473158 | year = 2001 | volume = 19 | pages = 1105 | issue = 4}}
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External links
- {{Cite patent|country=US|number=7164121|pubdate=2007-01-16|title=Ion attachment mass spectrometry method|assign1=Anelva Corp.|inventor1-last=Hirano|inventor1-first=Yoshiki|inventor2-last=Shiokawa|inventor2-first=Yoshiro}}
- {{Cite patent|country=US|number=7084397|pubdate=2006-08-01|title=Ion attachment mass spectrometry apparatus|assign1=Anelva Corp.|inventor1-last=Hirano|inventor1-first=Yoshiki|inventor2-last=Shiokawa|inventor2-first=Yoshiro|inventor3-last=Maruyama|inventor3-first=Harumi|inventor4-last=Nakamura|inventor4-first=Megumi}}
{{mass spectrometry}}