Supercritical fluid extraction with carbon dioxide for the determination of total petroleum hydrocarbons in soil

Fuel ◽  
1993 ◽  
Vol 72 (7) ◽  
pp. 1015-1023 ◽  
Author(s):  
Sally E. Eckert-Tilotta ◽  
Steven B. Hawthorne ◽  
David J. Miller
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Petroleum Hydrocarbons ◽  
Total Petroleum Hydrocarbons ◽  
Fluid Extraction

Supercritical fluid extraction for the determination of petroleum hydrocarbons in soil

1999 ◽  
Vol 845 (1-2) ◽  
pp. 357-363 ◽  
Author(s):  
L Morselli ◽  
L Setti ◽  
A Iannuccilli ◽  
S Maly ◽  
G Dinelli ◽  
...  
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Petroleum Hydrocarbons ◽  
Fluid Extraction

Supercritical fluid extraction and chromatography for the determination of oligomers in poly(ethylene terephthalate) films

1991 ◽  
Vol 63 (20) ◽  
pp. 2371-2377 ◽  
Author(s):  
Keith D. Bartle ◽  
Terry. Boddington ◽  
Anthony A. Clifford ◽  
Nicholas J. Cotton ◽  
Christopher J. Dowle
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Ethylene Terephthalate ◽  
Fluid Extraction ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals Supercritical Fluid Extraction of Pyrrolidine Alkaloid from Leaves of Piper amalago L.

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
V. S. Carrara ◽  
L. C. Filho ◽  
V. A. S. Garcia ◽  
V. S. Faiões ◽  
E. F. Cunha-Júnior ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Orthogonal Array ◽  
Design Matrix ◽  
Supercritical Carbon Dioxide Extraction ◽  
Orthogonal Array Design ◽  
Fluid Extraction ◽  
Array Design ◽  
Carbon Dioxide Extraction

Supercritical fluid extraction was used to extract the alkaloid N-[7-(3′,4′-methylenedioxyphenyl)-2(Z),4(Z)-heptadienoyl]pyrrolidine from leaves of Piper amalago L. A three-level orthogonal array design matrix, OAD OA9(34), was used for optimization of the parameters of supercritical extraction of the alkaloid, employing supercritical carbon dioxide: extraction time (20, 40, and 60 min), temperature (40, 50, and 60°C), pressure (150, 200, and 250 bar), and the use of cosolvents (ethanol, methanol, and propyleneglycol). All parameters had significant effect on the alkaloid yield. The alkaloid yield after 60 min of extraction without cosolvents at 9 different conditions (32) in terms of temperature (40, 50, and 60°C) and pressure (150, 200, and 250 bar) was also evaluated. The optimal yield (≈3.8 mg g−1) was obtained with supercritical CO2 + methanol (5% v : v) at 40°C and 200 bar for 60 min of extraction.

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