Author : V. T. Borrett
Publisher :
ISBN 13 : 9780642123008
Total Pages : 8 pages
Book Rating : 4.1/5 (23 download)
Book Synopsis Trace Analysis by MS/MS on a Double Focussing Mass Spectrometer by : V. T. Borrett
Download or read book Trace Analysis by MS/MS on a Double Focussing Mass Spectrometer written by V. T. Borrett and published by . This book was released on 1987 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in mass spectrometry - mass spectrometry (ms/ms) indicate that this techniques has a number of advantages over conventional methods for identification and trace analysis of organic materials (1). The method involves detection of fragment or daughter ions which arise from spontaneous or collisionally activated decomposition of parent ions in a field free region of the spectrometer. The main advantages are the additional information provided in the form of generic relationships between ions in the mass spectrum and the high specificity which can be achieved. In many cases, data obtained by ms/ms is sufficient to differentiate between isomeric structures. Although the ion intensity observed by ms/ms methods is considerably lower than with conventional MS, the reduction in 'chemical noise' is generally sufficient to allow detection of compounds at low levels by direct mixture analysis.