Instrumental aspects of positive and negative ion chemical ionization mass spectrometry. | Zendy

George C. Stafford | Zendy

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Instrumental aspects of positive and negative ion chemical ionization mass spectrometry.

Author(s) -

George C. Stafford

Publication year - 1980

Publication title -

environmental health perspectives

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.257

H-Index - 282

eISSN - 1552-9924

pISSN - 0091-6765

DOI - 10.1289/ehp.803685

Subject(s) - mass spectrometry , ion , chemistry , chemical ionization , mass spectrum , ionization , analytical chemistry (journal) , electron multiplier , quadrupole mass analyzer , electron ionization , detector , selected ion monitoring , physics , chromatography , optics , gas chromatography–mass spectrometry , organic chemistry

Differences in recording positive and negative ion chemical ionization mass spectra on a quadrupole mass spectrometer are discussed. An analog positive and negative ion electron multiplier detector is described which is well suited for a quadrupole instrument. This detector significantly reduces baseline noise in the negative ion mode and improves positive ion high mass sensitivity.

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