Determination of total polar material in frying oil using accelerated solvent extraction

2010 ◽  
Vol 22 (6) ◽  
pp. 134-136 ◽  
Author(s):  
Zainal ◽  
Heinz-Dieter Isengard
Keyword(s):  
Solvent Extraction ◽  
Accelerated Solvent Extraction ◽  
Frying Oil ◽  
Polar Material ◽  
Total Polar Material

DETERMINATION OF PAHs IN WASTEWATER IRRIGATED AGRICULTURAL SOIL USING ACCELERATED SOLVENT EXTRACTION

2002 ◽  
Vol 37 (2) ◽  
pp. 141-150 ◽  
Author(s):  
S. Tao ◽  
Y. H. Cui ◽  
J. Cao ◽  
F. L. Xu ◽  
R. Dawson ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Agricultural Soil ◽  
Accelerated Solvent Extraction

Determination of Felodipine in Tablets Using Accelerated Solvent Extraction

1998 ◽  
Vol 21 (4) ◽  
pp. 535-549 ◽  
Author(s):  
E. Björklund ◽  
M. Järemo ◽  
L. Mathiasson ◽  
L. Karlsson ◽  
J. T. Strode ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Accelerated Solvent Extraction

scholarly journals Determination of Organochlorine Pesticides and Chlorobenzenes in Strawberries by Using Accelerated Solvent Extraction Combined with Sorptive Enrichment and Gas Chromatography/Mass Spectrometry

2001 ◽  
Vol 84 (4) ◽  
pp. 1194-1201 ◽  
Author(s):  
Luise Wennrich ◽  
Peter Popp ◽  
Gábor Köller ◽  
Jürgen Breuste
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solvent Extraction ◽  
Organochlorine Pesticides ◽  
Accelerated Solvent Extraction ◽  
Stir Bar Sorptive Extraction ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

Abstract An analytical scheme for the determination of several organochlorine pesticides like hexachlorocyclohexanes (HCHs) and DDX compounds (p,p′-DDE, p,p′-DDD, and p,p′-DDT) as well as chlorobenzenes in strawberries has been developed. The procedure is based on aqueous accelerated solvent extraction (ASE) followed by solidphase microextraction (SPME) or stir bar sorptive extraction (SBSE) and subsequent thermodesorption–gas chromatography/mass spectrometry analysis. A 65 μm polydimethylsiloxane/divinylbenzene fiber was chosen for the SPME experiments. Significant SPME and ASE parameters were optimized using spiked water and strawberry samples. For the ASE of the organochlorine compounds, a water–acetone mixture (90 + 10, v/v) as the extraction solvent, an extraction temperature of 120°C, and 2 cycles of 10 min extraction proved optimal. The developed method was evaluated with respect to precision and limits of detection (LOD). The relative standard deviations of replicate ASE–SPME determinations (n = 5) were in the range of 4–24%. LOD values between 1 and 10 μ g/kg were achieved with the exception of DDT and DDE (40 μg/kg). Using SBSE, the LOD of these compounds could be improved (2 and 5 μg/kg). The main advantages of this method are the avoidance of cleanup and concentration procedures as well as the significant reduction of the required volume of organic solvents. The described method was applied to the determination of the pollutants in strawberry samples collected from different allotment gardens in a potentially polluted area, the Bitterfeld-Wolfen region (Germany).

scholarly journals Multiresidue Determination of Organophosphorus Pesticides in Ginkgo Leaves by Accelerated Solvent Extraction and Gas Chromatography with Flame Photometric Detection

2005 ◽  
Vol 88 (3) ◽  
pp. 729-735
Author(s):  
Xionghai Yi ◽  
Yitong Lu
Keyword(s):  
Gas Chromatography ◽  
Solvent Extraction ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Accelerated Solvent Extraction ◽  
Simple Method ◽  
Photometric Detection ◽  
Relative Standard ◽  
Flame Photometric Detection

Abstract A rapid and simple method using accelerated solvent extraction and solid-phase extraction cleanup was developed and validated for the determination of 15 organophosphorus pesticides in ginkgo leaves by capillary gas chromatography with flame photometric detection. The pesticides were extracted at 100°C under 1500 psi pressure in <20 min. The average recovery from 10 g ginkgo leaves, fortified at 3 levels ranging from 0.05 to 1.00 mg/kg, was 95.2% with a relative standard deviation of 4.6%. The limits of detection ranged from 1.11 × 10−3 mg/kg (dimethoate) to 4.44 × 10−3 mg/kg (dichlorvos). The proposed method showed acceptable accuracy and precision while minimizing environmental concerns, time, and labor. Furthermore, the method could be easily applied to the monitoring of these 15 organophosphorus pesticides in ginkgo leaves.

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