The Pyrogenation-Characters of Different Layers of the Castor Stalk

2011 ◽  
Vol 183-185 ◽  
pp. 2105-2109
Author(s):  
Xiao Ping Li ◽  
Ding Guo Zhou ◽  
Si Qun Wang ◽  
Hai Yan Mao
Keyword(s):  
Chemical Composition ◽  
High Performance ◽  
High Performance Liquid Chromatograph ◽  
Thermo Gravimetric ◽  
Liquid Chromatograph ◽  
Second Stage ◽  
Thermo Gravimetric Analyzer ◽  
The Relationship

Castor is one kind of excellent woody materials and can be used to make wood based panel instead of the wood materials. To use the castor stalk better, it studies the chemical composition including cellulose, hemicellulose and lignin by high performance liquid chromatograph (HPLC) and the standard of PRC respectively, the pyrogenation-characters by thermo gravimetric analyzer (TGA) and the relationship between chemical composition and the pyrogenation-characters by SAS. The results showed that the chemical composition and pyrogenation-characters are different in different layers of the castor stalk, besides the castor stalk is mainly pyrolysis in second stage (between 170-330°C).

Efficient high performance liquid chromatograph/ultraviolet method for determination of diclofenac and 4′-hydroxydiclofenac in rat serum

2006 ◽  
Vol 830 (2) ◽  
pp. 231-237 ◽  
Author(s):  
Lata Kaphalia ◽  
Bhupendra S. Kaphalia ◽  
Santosh Kumar ◽  
Mary F. Kanz ◽  
Mary Treinen-Moslen
Keyword(s):  
High Performance ◽  
High Performance Liquid Chromatograph ◽  
Rat Serum ◽  
Liquid Chromatograph

Use of a flow-injection sample manipulator as an interface between a "high-performance" liquid chromatograph and an atomic absorption spectrophotometer.

1981 ◽  
Vol 27 (9) ◽  
pp. 1546-1550 ◽  
Author(s):  
B W Renoe ◽  
C E Shideler ◽  
J Savory
Keyword(s):  
Atomic Absorption ◽  
Flow Injection ◽  
Metal Binding ◽  
High Performance ◽  
Atomic Absorption Spectrophotometry ◽  
Clinical Samples ◽  
High Performance Liquid Chromatograph ◽  
Liquid Chromatograph ◽  
Flame Atomic Absorption ◽  
Column Eluate

Abstract We describe an integrated, molecular-absorbance, atomic absorption instrument for studying metal/ligand binding in clinical samples. For an interface between the "high-performance" liquid chromatograph and the atomic absorption instrument we used a flow-injection sample manipulator, thus allowing both the chromatograph and the atomic absorption detector to operate at their separate optimum conditions. After specimen separation with a gel permeation column, we measured the molecular components of the column eluate by molecular absorbance spectrometry and the atomic components (calcium and magnesium) by flame atomic absorption spectrophotometry. This instrument system is capable of separating and analyzing multiple components within 20 min of injection of the sample on the column. The chromatograms presented demonstrate the utility of the system for investigating metal binding to a variety of ligands in clinical samples.

Determination of thiamin and thiamin phosphate esters in blood by liquid chromatography with post-column derivatization.

1983 ◽  
Vol 29 (12) ◽  
pp. 2073-2075 ◽  
Author(s):  
M Kimura ◽  
Y Itokawa
Keyword(s):  
High Performance ◽  
Sodium Hydroxide Solution ◽  
Potassium Ferricyanide ◽  
Phosphate Esters ◽  
High Performance Liquid Chromatograph ◽  
Liquid Chromatograph ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic ◽  
Thiamin Pyrophosphate

Abstract We demonstrate a liquid-chromatographic method involving post-column derivatization for determining the concentration of thiamin and its phosphate esters in human blood. Blood, erythrocytes, or plasma is deproteinized and centrifuged. Aliquots of the samples are applied to a mu Bondapak C18 column attached to a "high-performance" liquid chromatograph. Addition of potassium ferricyanide/sodium hydroxide solution to the column effluent with a proportioning pump converts thiamin phosphates into fluorophores, the intensities of which are measured with a spectrofluorophotometer. Thiamin, thiamin monophosphate, thiamin pyrophosphate, and thiamin triphosphate eluted as single peaks; no coeluting substances were detected. Thiamin pyrophosphate was the ester present in greatest concentration, followed by thiamin triphosphate; thiamin monophosphate and thiamin were present in slight amounts. This method allows easy determination of thiamin and its phosphate esters in 0.1 mL of blood.

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