ISSN:
0030-493X
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
It is shown that in a quadrupole mass spectrometer set up for negative chemical ionization, positive ions can be formed between the ionization chamber and the analyser both by electron impact and by chemical ionization. These ions will be registered together with negative ions formed in the ion source if the instrument is equipped with a positive and a negative conversion dynode and may reach the secondary electron multiplier even if the negative conversion dynode is disconnected.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/oms.1210210203
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