Trace determination of ?- and ?-endosulfan and three metabolites in human serum by gas chromatography electron capture detection and gas chromatography tandem mass spectrometry

2000 ◽  
Vol 14 (11) ◽  
pp. 939-946 ◽  
Author(s):  
J. L. Mart�nez Vidal ◽  
M. Moreno Fr�as ◽  
A. Garrido Frenich ◽  
F. Olea-Serrano ◽  
N. Olea
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Tandem Mass Spectrometry ◽  
Human Serum ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Trace Determination ◽  
Tandem Mass ◽  
Chromatography Tandem Mass Spectrometry

scholarly journals Broad-Spectrum Determination of Pesticides in Groundwater by Gas Chromatography with Electron Capture Detection, Nitrogen–Phosphorus Detection, and Tandem Mass Spectrometry

2001 ◽  
Vol 84 (6) ◽  
pp. 1751-1762 ◽  
Author(s):  
Antonia Garrido Frenich ◽  
Maria Del Carmen Pablos Espada ◽  
Jose Luis Martínez Vidal ◽  
Luis Molina
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Tandem Mass Spectrometry ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
Tandem Mass ◽  
Relative Standard ◽  
Nitrogen Phosphorus ◽  
Pesticides In Groundwater

Abstract Gas chromatography with electron capture detector (ECD), nitrogen–phosphorus detector (NPD), and tandem mass spectrometry (MS/MS) was used to identify 36 pesticides, widely used to control various pest and diseases in vegetables, in water after a preconcentration step on C18 cartridges. The recoveries obtained ranged from 70 to 135% at a fortification level of 100 ng/L with relative standard deviations of <36.2%. The limits of detection and quantitation were ≤48 and ≤160 ng/L, respectively. Important advantages of MS/MS over ECD and NPD in the determination of pesticides are also presented. The proposed analytical methodology was applied to the determination of pesticides in groundwater samples from an agricultural area, the Campo de Dalías (Almería, Spain). The most frequently encountered pesticides were endosulfan sulfate and metalaxyl, whereas the pesticide found at the highest concentration was fenamiphos.

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