FIELD: chemistry.
SUBSTANCE: in order to prevent excessive loss of analysed ions, inner walls of input and output diaphragms are divided into segments and alternating or variable voltage is applied to said diaphragms. Mass spectra of product ions during collision-induced dissociation are recorded using a mass analyser which is interfaced with a trap, particularly on a time-of-flight mass analyser with orthogonal ion input.
EFFECT: obtaining quantitative information on analysed compounds and high accuracy of structural chemical analysis.
15 cl, 7 dwg
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