Determination of isothiazolinone preservatives in cosmetics and household products by matrix solid-phase dispersion followed by high-performance liquid chromatography–tandem mass spectrometry

2012 ◽  
Vol 1270 ◽  
pp. 41-50 ◽  
Author(s):  
Gerardo Alvarez-Rivera ◽  
Thierry Dagnac ◽  
Marta Lores ◽  
Carmen Garcia-Jares ◽  
Lucia Sanchez-Prado ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Performance ◽  
Solid Phase ◽  
Tandem Mass ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Chromatography Tandem Mass Spectrometry ◽  
Household Products ◽  
Liquid Chromatography Tandem Mass

scholarly journals Validation of a Method for the Determination of Multiclass Pesticide Residues in Fruit Juices by Liquid Chromatography/Tandem Mass Spectrometry after Extraction by Matrix Solid-Phase Dispersion

2002 ◽  
Vol 85 (3) ◽  
pp. 724-730 ◽  
Author(s):  
Daniela Perret ◽  
Alessandra Gentili ◽  
Stefano Marchese ◽  
Manuel Sergi ◽  
Giuseppe D'Ascenzo
Keyword(s):  
Mass Spectrometry ◽  
Pesticide Residues ◽  
Solid Phase ◽  
Fruit Juices ◽  
Tandem Mass ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass

Abstract A multiresidue method was developed and validated for the determination of pesticide residues (omethoate, dimethoate, carbendazim, propoxur, thiabendazole, carbaryl, pirimicarb, azinphos-methyl, methidathion, and iprodione) in fruit juices. The samples were extracted by matrix solid-phase dispersion with diatomaceous earth and analyzed by liquid chromatography/tandem mass spectrometry. The method detection limits were <0.2 ppb for all pesticides; the relative standard deviations for analyses of samples fortified over the range of 2–50 ng/g were <9%, and the recoveries for each pesticide were all between 77 and 102%. The proposed method was used to analyze 21 commercial fruit juices; pesticide residues were found in 71% of the samples.

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