✦ LIBER ✦

A chemical ionization source of molecular ions for matrix-isolation spectroscopy

✍ Scribed by Jale Hacaloglu; Lester Andrews

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 505 KB
Volume: 160
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87595-5

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✦ Synopsis

A chemical ionization source from mass spectrometry was modified for matrix isolation spectroscopic studies. Argon positive ion chemical ionization of naphthalene produced naphthalene cation based on agreement of the matrix electronic spectrum with that obtained by vacuum ultraviolet radiation and electron impact techniques. Negative ion studies with chlorine gave the Cl, and Cl, anion absorptions at 340 and 25 3 nm, respectively, whose relative intensities depended on source pressure. Furthermore, CI,/HCI/Ar chemical ionization produced mainly HCl; anion absorbing at 287 nm due to secondary ion processes occurring inside the source block.

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