scholarly journals Volatile Products of Apples II. Production of Volatile Esters by Granny Smith Apples

1951 ◽  
Vol 4 (4) ◽  
pp. 544 ◽  
Author(s):  
Adrienne R Thompson ◽  
FE Huelin
Keyword(s):  
Volatile Products ◽  
Volatile Esters

Granny Smith apples were stored at oce., and samples were removed at intervals for determination of volatile ester production at 20oe.

THE DETERMINATION OF VOLATILE ESTERS IN CITRUS OILS AND EXTRACTS.

1915 ◽  
Vol 37 (10) ◽  
pp. 2382-2387 ◽  
Author(s):  
Alan R. Albright ◽  
Charles O. Young
Keyword(s):  
Volatile Esters

scholarly journals THERMAL DEGRADATION ANALYSIS OF WOOD TREATED WITH FIRERETARDANTS

2005 ◽  
Vol 1 ◽  
pp. 295
Author(s):  
Igors Urbanovičs ◽  
Pēteris Mekšs ◽  
Gaļina Dobele
Keyword(s):  
Fire Hazard ◽  
Untreated Wood ◽  
Fire Retardants ◽  
Analytical Pyrolysis ◽  
Toxic Compounds ◽  
Wood Pyrolysis ◽  
Hazard Control ◽  
Degradation Analysis ◽  
Volatile Products

Fire hazard control in wooden constructions is very important. For this purpose, fire retardants are used, which change the thermodestruction of wood and reduce combustion. The aim of the present research project was to study and compare the fire–protective properties of fire-retardants and to explain the chemical process of pyrolysis, namely, degradation in treated and untreated wood. The influence of fire-retardants on the wood thermal stability and the amount of volatile products was estimated on the basis of thermal analysis results. The volatile products (above 50%) of the pyrolysis process were identified, and the mechanism of the influence of fire-retardants on wood thermodestruction was studied.The presence of toxic compounds, formed by pyrolysis, was evaluated. The results of the study have shown that analytical pyrolysis is a modern, precise method for identifying the toxic compounds of volatile products in processes of both wood pyrolysis and combustion. The application of analytical pyrolysis enables a prompt determination of the fire protection degree of building wood constructions.

A Colorimetric Method for the Determination of Esters

1950 ◽  
Vol 3 (1) ◽  
pp. 128 ◽  
Author(s):  
AR Thompson
Keyword(s):  
Absorption Spectra ◽  
Colorimetric Method ◽  
Hydroxamic Acids ◽  
Degree Of Conversion ◽  
Maximum Absorption ◽  
Ferric Ion ◽  
Factors Influencing ◽  
Ferric Hydroxamate ◽  
Volatile Esters

The colorimetric method of Hill, based on conversion of esters to hydroxamic acids which form red complexes with ferric ion, has been adapted for the estimation of volatile esters. Investigation of the factors influencing the two reactions involved has led to a satisfactory procedure for esters derived from acids with an unbranched chain of two to ten carbon atoms and esters of isobutyric and isovaleric acids. The degree of conversion to ferric hydroxamate complexes has been found by reference to pure hydroxamic acids. The absorption spectra of the ferric hydroxamate complexes from all the esters examined show a maximum absorption at 520 mμ. Hence a mixture of esters may be estimated in terms of one of the esters.

Quantitative determination of volatile products formed in electrolyses of organic compounds

1993 ◽  
Vol 65 (15) ◽  
pp. 2145-2149 ◽  
Author(s):  
Wayne A. Pritts ◽  
Kenneth L. Vieira ◽  
Dennis G. Peters
Keyword(s):  
Quantitative Determination ◽  
Organic Compounds ◽  
Volatile Products
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