Multiresidue-matrix solid-phase dispersion method for determining 16 organochlorine pesticides and polychlorinated biphenyls in fish

1995 ◽  
Vol 40 (5-6) ◽  
pp. 259-266 ◽  
Author(s):  
Y. -C. Ling ◽  
I. -P. Huang
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Solid Phase ◽  
Dispersion Method ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion

scholarly journals Multiresidue Determination of Organochlorine Pesticides and Polychlorinated Biphenyls in Milk by Gas Chromatography with Electron-Capture Detection after Extraction by Matrix Solid-Phase Dispersion

2001 ◽  
Vol 84 (5) ◽  
pp. 1561-1568 ◽  
Author(s):  
Cristina Yagüe ◽  
Susana Bayarri ◽  
Regina Lázaro ◽  
Pilar Conchello ◽  
Agustín Ariño ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Electron Capture ◽  
Analytical Method ◽  
Solid Phase ◽  
Electron Capture Detection ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Repeatability And Reproducibility

Abstract A multiresidue analytical method based on matrix solid-phase dispersion was developed to analyze liquid milk for 22 organochlorine pesticides (OCPs) and 6 polychlorinated biphenyls (PCBs). Initial extraction is performed by loading 3 mL milk onto a 2.0 g octadecyl (C18)-bonded silica cartridge with n-hexane as the eluant. Neutral alumina column chromatography with sodium sulfate as the drying agent is used for further cleanup. The eluate is concentrated to 0.5 mL, and target analytes are determined by capillary gas chromatography with electron-capture detection. The optimized method was validated by determining accuracy (recovery percentages), precision (repeatability and reproducibility), and sensitivity (detection and quantitation limits) from analyses of milk samples fortified at 10 and 1 μg/L levels. Average recoveries were between 74 and 106% for all residues except β-HCH, β-endosulfan, and endosulfan sulfate. Both repeatability and reproducibility relative standard deviation values were < 22% for all residues. Detection limits ranged from 0.02 to 0.12 μg/L and quantitation limits were between 0.02 and 0.62 μg/L. The proposed analytical method may be used as a fast and simple procedure in routine determinations of OCPs and PCBs in milk.

Development and Validation of a Matrix Solid-Phase Dispersion Method to Determine Acrylamide in Coffee and Coffee Substitutes

2010 ◽  
Vol 75 (3) ◽  
pp. T57-T63 ◽  
Author(s):  
Cristina M. Dias Soares ◽  
Rita C. Alves ◽  
Susana Casal ◽  
M. Beatriz P.P. Oliveira ◽  
José Oliveira Fernandes
Keyword(s):  
Solid Phase ◽  
Dispersion Method ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Development And Validation
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