An Analytical Method for Mass Spectrometer Leak Detection
An Analytical Method for Mass Spectrometer Leak Detection

Author: Claude R. Winkelman

Publisher:

Published: 1969

Total Pages: 14

ISBN-13:

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A method is presented for using a mass spectrometer leak detector analytically for large systems. The method consists of calibrating the mass spectrometer, measuring the response time of the system being checked for leaks, and then utilizing these results in the system tests. The method has been used to measure leaks in two large (360 and 600 liters) heat exchangers of complex internal geometry. The response times of these vessels were 18 and 24 min, respectively, and the minimum detectable leak was about 4.6 x 10−10 std-cc/sec for each vessel.

Liquid Chromatography Time-of-Flight Mass Spectrometry
Liquid Chromatography Time-of-Flight Mass Spectrometry

Author: Imma Ferrer

Publisher: John Wiley & Sons

Published: 2009-05-06

Total Pages: 281

ISBN-13: 047042995X

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Time of flight mass spectrometry identifies the elements of a compound by subjecting a sample of ions to a strong electrical field. Illuminating emerging analytical techniques in high-resolution mass spectrometry, Liquid Chromatography Time-of-Flight Mass Spectrometry shows readers how to analyze unknown and emerging contaminants—such as antibiotics, steroids, analgesics—using advanced mass spectrometry techniques. The text combines theoretical discussion with concrete examples, making it suitable for analytical chemists, environmental chemists, organic chemists, medicinal chemists, university research chemists, and graduate and post-doctorate students.