scholarly journals Silicon speciation in light petroleum products using gas chromatography coupled to ICP-MS/MS

2020 ◽  
Vol 35 (10) ◽  
pp. 2387-2394
Author(s):  
Raquel Sánchez ◽  
Fabien Chainet ◽  
Vincent Souchon ◽  
Sylvain Carbonneaux ◽  
Charles-Philippe Lienemann ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Petroleum Products ◽  
Chemical Form ◽  
Light Petroleum ◽  
Detector Response ◽  
Tandem Mass ◽  
Chromatography Method ◽  
Sample Matrix ◽  
Icp Ms

A gas chromatography method coupled to ICP-tandem mass spectrometry (GC-ICP-MS/MS) was validated for silicon speciation method for light petroleum products with a detector response independently of sample matrix and silicon chemical form.

Solid-phase extraction and gas chromatography-tandem mass spectrometry method for the simultaneous determination of several pesticides in water

2010 ◽  
Vol 62 (3) ◽  
pp. 667-675 ◽  
Author(s):  
A. Penetra ◽  
V. Vale Cardoso ◽  
E. Ferreira ◽  
M. J. Benoliel
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Tandem Mass Spectrometry ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Maximum Level ◽  
Detector Response ◽  
Tandem Mass ◽  
Phase Extraction ◽  
Sensitivity And Selectivity

Contamination of surface and groundwater sources with pesticide residues has been of great concern for a long time and it is a major challenge for the preservation and sustainability of the environment. In order to accomplish the requirements of the European Directive 98/83/EC, we developed and validated an analytical method based on the combination of gas chromatography and tandem quadrupole mass spectrometry (GC-MS/MS) using solid-phase extraction as sample preparation. In this work nine pesticides were studied: molinate, simazine, atrazine, terbuthylazine, diazinon, alachlor, metalaxyl, metolachlor and pendimethalin. In order to get the best sensitivity and selectivity for each pesticide, several parameters of the tandem mass spectrometry were optimized using the MRM mode. Good linearity of the detector response was found for all pesticides at concentrations within the tested working range, with linear determination coefficients higher than 0.9988. Recoveries studies in several matrices with different fortification levels were performed, with recoveries between 77 and 115% with RSD lower than 9.5%. The MQLs obtained for these compounds were between 0.013 μg L−1 and 0.022 μg L−1, which were much lower than the maximum level established by the European legislation.

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