Gas chromatographic mass spectrometric indication of double bond position in monounsaturated primary acetates and alcohols without derivatization

1983 ◽  
Vol 18 (1) ◽  
pp. 9-11 ◽  
Author(s):  
B. A. Leonhardt ◽  
E. D. DeVilbiss ◽  
J. A. Klun
Keyword(s):  
Double Bond ◽  
Double Bond Position ◽  
Mass Spectrometric ◽  
Chromatographic Mass

Mass spectrometric location of double-bond position in isomeric dodecenols, without chemical derivatization

1993 ◽  
Vol 7 (7) ◽  
pp. 591-593 ◽  
Author(s):  
Gu Yuan ◽  
Meiyu He ◽  
Xiaoran He ◽  
Michio Horiike ◽  
Chul-Sa Kim ◽  
...  
Keyword(s):  
Double Bond ◽  
Double Bond Position ◽  
Mass Spectrometric ◽  
Chemical Derivatization

Gas Chromatographic/Mass Spectrometric Confirmation of Leucomalachite Green in Catfish (Ictalurus punctatus) Tissue

1995 ◽  
Vol 78 (4) ◽  
pp. 971-977 ◽  
Author(s):  
Sherri B Turnipseed ◽  
José E Roybal ◽  
Jeffrey A Hurlbut ◽  
Austin R Long
Keyword(s):  
Solid Phase Extraction ◽  
Ictalurus Punctatus ◽  
Solid Phase ◽  
Mass Spectrometric ◽  
Phase Extraction ◽  
Neutral Alumina ◽  
Ms Analysis ◽  
Solid Phase Extraction Cartridge ◽  
Leucomalachite Green ◽  
Chromatographic Mass

Abstract A gas chromatographic/mass spectrometric (GC/MS) method was developed to confirm the presence of leucomalachite green (LMG), a metabolite of the triphenylmethane dye malachite green (MG), in catfish tissue. Residues were isolated according to a previously described liquid chromatographic (LC)A/IS spectrometric analysis of MG and LMG in fish. In our isolation procedure, analytes are extracted from tissue with acetonitrile–buffer, partitioned into CH2CI2, and applied to neutral alumina and propylsulfonic acid solid-phase extraction cartridges. Before GC/MS analysis, extracts prepared for the LC determinative method are eluted from a cyano solid-phase extraction cartridge, extracted into organic solvent, and concentrated for GC/MS analysis. Selected ion monitoring was performed by using 5 diagnostic ions (m/z 330,329,253,210, and 165) of LMG. The method was validated by confirming LMG in tissue fortified with mixtures of MG and LMG (5 and 10 ng/g each) and in tissue from fish that had been exposed to low levels of MG.

Gas chromatographic-mass spectrometric confirmation of radioimmunoassay results for cannabinoids in blood and urine

1990 ◽  
Vol 46 (3) ◽  
pp. 219-230 ◽  
Author(s):  
A.J. Clatworthy ◽  
M.C.H. Oon ◽  
R.N. Smith ◽  
M.J. Whitehouse
Keyword(s):  
Mass Spectrometric ◽  
Chromatographic Mass
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