scholarly journals Adsorption Properties of Sediments for Pesticides: Investigation with Supercritical Fluid Extraction and Gas Chromatograph Mass Spectrometry

10.5772/14014 ◽  
2011 ◽  
Author(s):  
Hiroaki Chikushi ◽  
Natsuko Yoshida ◽  
Kei To
Keyword(s):  
Mass Spectrometry ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Adsorption Properties ◽  
Gas Chromatograph ◽  
Fluid Extraction ◽  
Gas Chromatograph Mass Spectrometry

Determination of hexabromocyclododecane in soil by supercritical fluid extraction and gas chromatography mass spectrometry

2018 ◽  
Vol 10 (10) ◽  
pp. 1181-1189 ◽  
Author(s):  
Xinlei Wang ◽  
Xu Zhang ◽  
Zhifeng Wang ◽  
Yuedong Chen ◽  
Xinxin Li ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Gas Chromatography Mass Spectrometry ◽  
Fluid Extraction ◽  
Innovative Method ◽  
Chromatography Mass Spectrometry

Effective detection of hexabromocyclododecane using an innovative method combined with supercritical fluid extraction and gas chromatography mass spectrometry was established.

Supercritical fluid extraction coupled on-line with mass spectrometry and spectroscopic techniques

1998 ◽  
pp. 353-391
Author(s):  
B. Minty ◽  
E. D. Ramsey ◽  
A. T. Rees ◽  
D. I. James ◽  
P. M. O’brien ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Spectroscopic Techniques ◽  
Fluid Extraction ◽  
On Line

Supercritical Fluid Extraction and Gas Chromatography/Ion Trap Mass Spectrometry of Pentachloromtrobenzene Pesticides in Vegetables

1995 ◽  
Vol 78 (2) ◽  
pp. 445-452 ◽  
Author(s):  
Steven J Lehotay ◽  
Medina A Ibrahim
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Ion Trap ◽  
Ion Trap Mass Spectrometry ◽  
Fluid Extraction ◽  
Green Beans ◽  
Matrix Interferences ◽  
Vegetable Sample

Abstract An analytical approach using supercritical fluid extraction (SFE) followed by gas chromatography/ion trap mass spectrometry (GC/ITMS) was developed for the analysis of the fungicide pentachloromtrobenzene and several analogues in vegetables. The method was tested in the analysis of carrots, potatoes, green beans, celery, and radishes fortified with pentachloronitrobenzene, tetrachloronitrobenzene, pentachloroanisole, pentachlorothioanisole, pentachlorobenzene, hexachlorobenzene, and pentachloroaniline. An incurred carrot sample analyzed by the method was shown to contain hexachlorobenzene at 7 ± 3 ng/g, which agreed with the concentration (8 ± 4 ng/g) determined using a traditional solvent-based method. The SFE method consisted of the following steps: (1) homogenizing a 50 g vegetable sample and weighing a 3 g subsample; (2) mixing 2 g sorbent (Hydromatrix) with the subsample to absorb moisture and packing a 10 mL extraction vessel; (3) extracting with 40 mL C02 at 200 atm, 40°C, and a flow rate of 3 mL/min; and (4) collecting the extract on a 1 g alumina basic trap at 25°C and flushing with 8 mL isooctane. Collection of the extract on alumina efficiently removed chlorophyll and other matrix interferences. GC/ITMS in the electron-impact mode confirmed and quantitated the analytes at concentrations as low as 1 ng/g.

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