Quantitative determination of crystalline silica in respirable-size dust samples by infrared spectrophotometry

The Analyst ◽  
1984 ◽  
Vol 109 (9) ◽  
pp. 1117 ◽  
Author(s):  
Robert D. Foster ◽  
Ronald F. Walker
Keyword(s):  
Quantitative Determination ◽  
Crystalline Silica ◽  
Infrared Spectrophotometry

Effects of Oil Contamination on Cotton Quality: Methods of Analysis and Characterization of Contaminants

1977 ◽  
Vol 47 (4) ◽  
pp. 271-276 ◽  
Author(s):  
Henry H. Perkins ◽  
Charles K. Bragg
Keyword(s):  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Oil Contamination ◽  
Gas Liquid Chromatography ◽  
Infrared Spectrophotometry ◽  
Simple Method ◽  
Yarn Strength ◽  
Problem Severity

Oil contamination of cotton is a recurring problem that adversely affects cotton quality. Processing problems occur in carding through spinning, and both yarn strength and appearance are lowered. Problem severity increases as the level of contamination increases. A simple method is described for quantitative determination of contamination. Contaminants are characterized and differentiated from each other and from the natural constituents of cotton by use of infrared spectrophotometry and gas-liquid chromatography.

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