✦ LIBER ✦

Internal pulsed valve sample introduction on a quadrupole ion trap mass spectrometer

✍ Scribed by Brad I. Coopersmith; Richard A. Yost

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 509 KB
Volume: 6
Category: Article
ISSN: 1044-0305
DOI: 10.1016/1044-0305(95)00528-l

No coin nor oath required. For personal study only.

✦ Synopsis

A pulsed valve positioned just outside the ion trap electrodes (within the vacuum chamber) has been characterized. The observed gas pulse widths and the maximum ion intensities were found to decrease as the distance between the pulsed valve and the ion trap electrodes increased. An explanation is presented within. The pulsed valve was found to impart temporal separation in ion-molecule reactions by permitting the removal of interfering neutrals. Other factors that affect the degree of temporal separation also are presented.

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