Enhanced Detection of Nitroaromatic Explosive Vapors Combining Solid-Phase Extraction-Air Sampling, Supercritical Fluid Extraction, and Large-Volume Injection-GC

2003 ◽  
Vol 75 (13) ◽  
pp. 3137-3144 ◽  
Author(s):  
Ramón Batlle ◽  
Håkan Carlsson ◽  
Petter Tollbäck ◽  
Anders Colmsjö ◽  
Carlo Crescenzi
Keyword(s):  
Solid Phase Extraction ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Large Volume ◽  
Solid Phase ◽  
Air Sampling ◽  
Phase Extraction ◽  
Fluid Extraction ◽  
Large Volume Injection ◽  
Nitroaromatic Explosive

Supercritical Fluid Extraction of N-Nitrosamines in Hams Processed in Elastic Rubber Nettings

1995 ◽  
Vol 78 (3) ◽  
pp. 744-748 ◽  
Author(s):  
John W Pensabene ◽  
Walter Fiddler ◽  
Robert J Maxwell ◽  
Alan R Lightfield ◽  
James W Hampson
Keyword(s):  
Solid Phase Extraction ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Fluid Extraction ◽  
Significant Difference ◽  
Solid Phase Extraction Procedure ◽  
Elastic Rubber

Abstract A method for analysing /V-nitrosamines in hams processed in elastic rubber nettings by supercritical fluid extraction (SFE) is described. The study was carried out with the prototype of a commercial extractor with a silica gel adsorption cartridge integrally attached to the variable restrictor. The SFE method was compared with a solid-phase extraction procedure currently used for ham analysis. Both methods used the same gas chromatographic–chemiluminescence detection conditions. No significant difference (p <0.05) was found between results obtained with the 2 methods. Repeatability standard deviation of the SFE method was 1.7 ppb, with a coefficient of variation (CV) of 2.7%, compared with 2.2 ppb, with a CV of 3.5%, for solid-phase extraction. SFE permits minimal use of solvent and more rapid analysis of nitrosamines.

Supercritical fluid extraction of papaverine and noscapine from poppy capsules followed by preconcentration with magnetic nano Fe3O4@Cu@diphenylthiocarbazone particles

2017 ◽  
Vol 41 (15) ◽  
pp. 7028-7037 ◽  
Author(s):  
Mohammad Tajik ◽  
Yadollah Yamini ◽  
Tahmineh Baheri ◽  
Meysam Safari ◽  
Hamid Asiabi
Keyword(s):  
Solid Phase Extraction ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Fluid Extraction ◽  
Opium Alkaloids ◽  
Magnetic Solid ◽  
Nano Fe3o4

A novel magnetite adsorbent modified with copper and diphenylthiocarbazone was synthesized and used as a sorbent for magnetic solid phase extraction (MSPE) of two opium alkaloids: papaverine and noscapine.

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