The photodissociation of methyl iodide at 229.4 nm: A determination of the fragment recoil anisotropy using energy‐selective electron impact ionization and time‐of‐flight mass spectrometry

1988 ◽  
Vol 89 (5) ◽  
pp. 2909-2917 ◽  
Author(s):  
S. M. Penn ◽  
C. C. Hayden ◽  
K. J. Carlson Muyskens ◽  
F. F. Crim
Keyword(s):  
Mass Spectrometry ◽  
Electron Impact ◽  
Methyl Iodide ◽  
Impact Ionization ◽  
Time Of Flight ◽  
Electron Impact Ionization ◽  
Flight Mass Spectrometry

scholarly journals Determination of Combined Residues of Metalaxyl and 2,6-Dimethylaniline Metabolites in Urine byGas Chromatography/Mass Spectrometry

1996 ◽  
Vol 79 (1) ◽  
pp. 117-123 ◽  
Author(s):  
John V Headley ◽  
Donald B Maxwell ◽  
Christopher Swyngedouw ◽  
John R Purdy
Keyword(s):  
Mass Spectrometry ◽  
Detection Limit ◽  
Electron Impact ◽  
Methylene Chloride ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Mass Spectrometric ◽  
Steam Extraction ◽  
Chromatographic Mass

Abstract A gas chromatographic/mass spectrometric (GC/MS) method for determination of combined residues of the fungicide metalaxyl and its metabolites in urine containing the 2,6-dimethylaniline moiety is described. The method is a modification of a method of Balasubramanian and Perez for analysis of metalaxyl invegetables. Noted modifications include replacement of steam extraction with extraction by methylene chloride and use of electron impact ionization GC/MS in the selected-ion mode. The method is linear over the range of 0.1-5 μg 2,6- dimethylaniline/g urine and has a detection limit of 0.025 μg/g.

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