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Quantitative analysis of pethidine using liquid secondary ion and tandem mass spectrometry

โœ Scribed by Fengrui Song; Meng Cui; Shuying Liu

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
43 KB
Volume
13
Category
Article
ISSN
0951-4198

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โœฆ Synopsis

A method for the quantatitive determination of pethidine in human urine by liquid secondary ion and tandem mass spectrometry is presented. Quantification was carried out by using ketamine as internal standard. It was found that the collision-induced dissociation (CID) spectrum of the [M H] ion of pethidine exhibited a prominent daughter ion at m/z 220 and ketamine also yielded the same daughter ion at m/z 220. For ((quadrupole)) quantitative analysis, the first quadrupole mass filter was set to transmit m/z 220 and a narrow-range magnet scan yielded a spectrum of parents, including m/z 238 and 248, correspending to ketamine and pethidine, respectively.

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