scholarly journals Positional isomer differentiation of designer drugs with 3-carbonyl-N-fluoropentylindole using ion trap mass spectrometry

2017 ◽  
Vol 22 (2) ◽  
pp. 123-132
Author(s):  
Yusuke Haruta ◽  
Atsushi Morita ◽  
Mitsuhiko Ohtsuki ◽  
Yoko Nakazono ◽  
Hideyuki Nakayama ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Positional Isomer ◽  
Ion Trap ◽  
Designer Drugs ◽  
Ion Trap Mass Spectrometry ◽  
Isomer Differentiation

Determination and quantitative analysis of designer drugs in human urine by liquid chromatography-mass spectrometry

2014 ◽  
Vol 6 (20) ◽  
pp. 8291-8298
Author(s):  
Xueguo Chen ◽  
Ting Zhang
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Quantitative Analysis ◽  
Electrospray Ionization ◽  
Human Urine ◽  
Ion Trap ◽  
Designer Drugs ◽  
Ion Trap Mass Spectrometry ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

A robust liquid chromatography-electrospray ionization-ion trap mass spectrometry (LC-ESI-ITMS) method was developed and utilized for the determination and quantitative analysis of four designer drugs in human urine.

TRIGLYCERIDE COMPOSITION OF SIXTEEN STRAINS OF MARINE DIATOM

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Lily M.G. Panggabean ◽  
Abdullah Rasyid ◽  
Zarrah Duniani ◽  
Yana Meliana ◽  
Indah Kurniasih
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acid ◽  
Double Bond ◽  
Unsaturated Fatty Acid ◽  
Ion Trap ◽  
Carbon Chain ◽  
Highly Unsaturated Fatty Acid ◽  
Marine Diatom ◽  
Ion Trap Mass Spectrometry ◽  
Spectra Analysis

Trigliceride or triacylglicerol (TAG) composition in crude oil of sixteen strain of marine diatom has been detected by spectra analyses on an Electrospray - Ion Trap – Mass Spectrometry (ESI-IT-MS) HCT Bruker-Daltonic GmbH instrument with AgNO3 used as coordination ionization agent. Biomass samples of each microalga strain were taken from early and late stationary cultures in f/2 enriched seawater and algal oils were extracted according to Bligh and Dyer. Results from spectra analysis showed that P-Pt-P (C16:0-C16:1-C16:0) were distinguished in TAG from diatom strains Chaetoceros sp.1, Chaetoceros sp.2, Thalasiossira sp.1, Thalasiossira sp.2, Thalasiossira sp.3, Navicula sp. 1, Navicula sp. 2, Navicula sp. 3, Navicula sp. 4, Nitzschia sp. 2 and Amphora sp. In contrast, TAGs in Melosira sp. included P-P-P (C16:0-C16:0-C16:0) and P-P-O (C16:0-C16:0-C18:1) were identified. TAGs from Chaetoceros sp. were the most varies among samples, i.e. P-Pt-P (C16:0-C16:1-C16:0), A-P-M (C20:4-C16:0-C14:0), P-Pt-Lt (C16:0-C16:1-C18:3), P-Pt-A (C16:0-C16:1-C20:4), D-P-P (C22:6-C16:0-C16:0), A-Ln-P (C20:4-C18:2-C16:0). Various TAGs were also detected in Nitzschia sp.2, i.e. P-Pt-M (C16:0-C16:1-C14:0), P-Pt-P (C16:0-C16:1-C16:0), P-Pt-S (C16:0-C16:1-C18:0), P-Pt-A (C16:0-C16:1-C20:4). TAGs composition in Skeletonema strains that similar to those in Nitzschia sp.1 has longer carbon, i.e. P-P-O (C16:0-C16:0-C18:1), P-O-O (C16:0-C18:1-C18:1) and O-O-O (C18:1-C18:1-C18:1). TAGs with longer carbon chain and more double bond including highly unsaturated fatty acid C20:4 were increased with culture age in diatoms Chaetoceros sp.1, Chaetoceros sp.2, Thalasiossira sp.2, Navicula sp.1 and Nitzschia sp. 2.Keywords: diatom, TAG, ESI-IT-MS, f/2, early and late stationary

Electron spray ion trap mass spectrometry of isoflavones and isoflavone aglycones of Semen Sojae Praeparatum

2013 ◽  
Vol 33 (10) ◽  
pp. 1108-1115
Author(s):  
Gao FANG ◽  
Peng ZHANG ◽  
Xiao-lan YE ◽  
Xia ZHU ◽  
Xin ZHAO ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Trap ◽  
Ion Trap Mass Spectrometry

Oligonucleotide sequencing using guanine-specific methylation and electrospray ionization ion trap mass spectrometry

1999 ◽  
Vol 34 (4) ◽  
pp. 276-280 ◽  
Author(s):  
Lisa A. Marzilli ◽  
John P. Barry ◽  
Todd Sells ◽  
Say-Jong Law ◽  
Paul Vouros ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Ion Trap ◽  
Ion Trap Mass Spectrometry
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