scholarly journals Analysis of pesticide residues in Brazilian medicinal plants: matrix solid phase dispersion versus conventional (European Pharmacopoeia) methods

2003 ◽  
Vol 14 (2) ◽  
pp. 304-309 ◽  
Author(s):  
Vânia G. Zuin ◽  
Janete H. Yariwake ◽  
Fernando M. Lanças
Keyword(s):  
Medicinal Plants ◽  
Pesticide Residues ◽  
Solid Phase ◽  
European Pharmacopoeia ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Brazilian Medicinal Plants

Comparison of matrix solid-phase dispersion and modified QuEChERS methods for extraction of pesticide residues from onion

2012 ◽  
Vol 4 (6) ◽  
pp. 1820 ◽  
Author(s):  
Sherol Acosta Rodrigues ◽  
Sergiane Souza Caldas ◽  
Márcia Helena Scherer Kurz ◽  
Liziara da Costa Cabrera ◽  
Fábio Andrei Duarte ◽  
...  
Keyword(s):  
Pesticide Residues ◽  
Solid Phase ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Modified Quechers

Use of Carbon Nanotubes for the Analysis of Pesticide Residues in Fruits and Vegetables

2016 ◽  
Vol 99 (6) ◽  
pp. 1415-1425 ◽  
Author(s):  
Lukman Bola Abdulrauf ◽  
Guan Huat Tan
Keyword(s):  
Carbon Nanotubes ◽  
Pesticide Residues ◽  
Solid Phase Microextraction ◽  
Fruits And Vegetables ◽  
Solid Phase ◽  
Purification And Characterization ◽  
Characterization Methods ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Sorbent Materials

Abstract This review presents the application of carbon nanotubes as sorbent materials in the analysis of pesticide residues in fruits and vegetables. The advantages, limitations, and challenges of carbon nanotubes, with respect to their use in analytical chemistry, are presented. The efficiency of their application as extraction sorbent materials (in terms of LOD, LOQ, linearity, relative recovery, and RSD) in SPE, solid-phase microextraction, multi-plug filtration clean-up, matrix solid-phase dispersion, and the quick, easy, cheap, effective, rugged and safe method is reported. The synthesis, functionalization, purification, and characterization methods of carbon nanotubes are also discussed.

scholarly journals Determination of Five Pesticide Residues in Oranges by Matrix Solid-Phase Dispersion and Liquid Chromatography to Estimate Daily Intake of Consumers

2001 ◽  
Vol 84 (3) ◽  
pp. 901-909 ◽  
Author(s):  
Ana I Valenzuela ◽  
Yolanda Picó ◽  
Guillermina Font
Keyword(s):  
Liquid Chromatography ◽  
Pesticide Residues ◽  
Solid Phase ◽  
Atmospheric Pressure Chemical Ionization ◽  
Daily Intake ◽  
World Health ◽  
Ionization Mass ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Fruit Samples

Abstract Residues of benzoylphenylurea insecticides (diflubenzuron, hexaflumuron, and flufenuxuron), carboxamide acaricides (hexythiazox), and carbamate insecticides (benfuracarb) were determined in 150 orange fruit samples from September 1998 to June 1999, to estimate exposure of the Valencian population to oranges contaminated with these newly developed pesticides. The method for monitoring these residues is based on matrix solid-phase dispersion and liquid chromatography with UV or atmospheric pressure chemical ionization/mass spectrometry (APCI/MS) detection. Orange samples representing 11 varieties were collected from an agricultural cooperative and examined for the 5 pesticides. In 74.6% of all analyzed samples, the pesticide residues were below detection limits, which ranged from 0.002 to 0.05 mg/kg. Residues were detected in 25.4% of the samples, with higher incidences of diflubenzuron, flufenuxuron, hexythiazox, and benfuracarb; hexaflumuron residues were detected only occasionally. Two different pesticides exceeded maximum residue limits (MRLs) in 4 (2.7%) of the orange samples. Diflubenzuron surpassed 1 mg/kg MRL in 3 samples and flufenuxuron exceeded the 0.3 mg/kg MRL in 3 samples. The estimated daily intake of the 5 pesticide residues during the period was 0.077 μg/kg body weight per day. This value is much lower than the total admissible daily intake proposed by the Food and Agricultural Organization and the World Health Organization.

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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