Synthesis of high temperature cholesteric copolysiloxanes and their use as stationary phases for high resolution gas chromatography

2000 ◽  
Vol 45 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Chih-Hung Lin ◽  
Chain-Shu Hsu
Keyword(s):  
Gas Chromatography ◽  
High Temperature ◽  
High Resolution ◽  
Stationary Phases ◽  
High Resolution Gas Chromatography

Application of high temperature high resolution gas chromatography to paraffinic deposits in petroleum production pipelines

1994 ◽  
Vol 17 (4) ◽  
pp. 259-263 ◽  
Author(s):  
Francisco Radler de Aquino Neto ◽  
Jari Nobrega Cardoso ◽  
Alberto dos Santos Pereira ◽  
Maria Conceiçao Zupo Fernandes ◽  
Carlos Alberto Caetano ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
High Temperature ◽  
High Resolution ◽  
Petroleum Production ◽  
High Resolution Gas Chromatography

Systematic Study of High Molecular Weight Compounds in Amazonian Plants by High Temperature Gas Chromatography-Mass Spectrometry

2000 ◽  
Vol 55 (3-4) ◽  
pp. 175-179 ◽  
Author(s):  
Denilson Soares de Siqueira ◽  
Alberto dos Santos Pereira ◽  
José Augusto Cabralb ◽  
Carlos Alberto Cid Ferreirab ◽  
Francisco Radler de Aquino Neto
Keyword(s):  
Mass Spectrometry ◽  
Molecular Weight ◽  
Gas Chromatography ◽  
High Temperature ◽  
High Resolution ◽  
High Molecular Weight ◽  
Systematic Study ◽  
Gas Chromatography Mass Spectrometry ◽  
High Resolution Gas Chromatography ◽  
High Temperature Gas

Abstract The fractions of hexane and dichloromethane extraction from marupá (Simaruba amara) and (Bertholletia excelsa) leaves were analyzed by HT-HRGC (high temperature high resolution gas chromatography) and HT-HRGC coupled to mass spectrometry (HT-HRGC-MS). Several compounds can be characterized including unusual high molecular weight com pounds.

scholarly journals Analysis and Quantitation of Rotenoids and Flavonoids in Derris (Lonchocarpus urucu) by High-Temperature High-Resolution Gas Chromatography

2000 ◽  
Vol 38 (4) ◽  
pp. 174-180 ◽  
Author(s):  
A. dos Santos Pereira ◽  
M. A. A. Serrano ◽  
F. R. de Aquino Neto ◽  
A. da Cunha Pinto ◽  
D. F. Texeira ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
High Temperature ◽  
High Resolution ◽  
High Resolution Gas Chromatography

Chemical Composition of Tipuana tipu, a Source for Tropical Honey Bee Products

2003 ◽  
Vol 58 (3-4) ◽  
pp. 201-206 ◽  
Author(s):  
Alberto dos Santos Pereira ◽  
Francisco Radler de Aquino Neto
Keyword(s):  
Gas Chromatography ◽  
High Temperature ◽  
Chemical Composition ◽  
High Resolution ◽  
Honey Bee ◽  
Wax Esters ◽  
Epicuticular Waxes ◽  
Southern Brazil ◽  
High Resolution Gas Chromatography ◽  
Long Chain

Tipuana tipu (Benth.) Kuntze is a tree from the leguminosae family (Papilionoideae) indigenous in Argentina and extensively used in urbanism, mainly in Southern Brazil. The epicuticular waxes of leaves and branch, and flower surface were studied by high temperature high resolution gas chromatography. Several compounds were characterized, among which the aliphatic alcohols were predominant in branch, leaves and receptacle. Alkanes were predominant only in the petals and the aliphatic acids were predominant in stamen. In branches and leaf epicuticular surfaces, six long chain wax esters series were characterized, as well as lupeol and b-amyrin hexadecanoates.

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