Lubricated metal-powder mixes. Determination of lubricant content. Soxhlet extraction method

2012 ◽  
Keyword(s):  
Metal Powder ◽  
Extraction Method ◽  
Soxhlet Extraction

scholarly journals Determination of Dissolved Concentrations of Polycyclic Aromatic Hydrocarbons in River

2015 ◽  
Vol 48 ◽  
pp. 67-80
Author(s):  
Muhammad Nuraddeen Bui
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Silicone Rubber ◽  
Extraction Method ◽  
Soxhlet Extraction ◽  
Water Systems ◽  
Passive Samplers ◽  
Reference Compound ◽  
Polycyclic Aromatic

This study shows the sensitivity of using silicone rubber passive sampler(SR-PS) andgas chromatography with mass spectrometer (GC-MS) detection for monitoring and identification of polycyclic aromatic hydrocarbons in surface water systems. The analysis was performed for eighteen PAHs compounds after pre-concentration using Soxhlet extraction method. By comparison, a total of 13 PAHs were detected in the spot water samples, of which none was quantifiable. The freely dissolved PAH concentrations were found to range from 0.17 ng/L to 0.76 ng/L at Ugieriver. The use of fluorine d10 as Performance reference compound(PRC) gives a sampling rates of 8.14 (L/day) for silicone rubber passive samplers. Analysis of PAHs concentrations suggest the contaminants are mainly from pyrolytic sources. Overall it can be concluded that SR-PS are viable alternatives in the environmental monitoring of PAHs.

Study on Determination of Grease Content Inner Leather by Ultrasonic-Combining-Soxhlet Extraction Method

2011 ◽  
Vol 393-395 ◽  
pp. 1456-1461
Author(s):  
Xiao Min Luo ◽  
Peng Ni Li ◽  
Guo Hui Zhao ◽  
Dong Qiu Wu
Keyword(s):  
Conventional Method ◽  
Extraction Method ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Dichloromethane Solution ◽  
Ultrasonic Technology ◽  
Before And After ◽  
Ultrasound Technology ◽  
Conventional Extraction

Different shaped samples of soaked leather in dichloromethane solution was pretreated by ultrasound technology, then the grease content in solution was measured by soxhlet extraction method. Samples before and after extraction were respectively made into histology slices in order to visually observe the situation of grease content. Results showed that compared with conventional extraction methods, extraction time was reduced to1/6~1/7 times and 50% solvent was saved by ultrasonic technology. Histology photos exhibited a cleaner extraction situation, which indicated that ultrasound technology behaved more efficient than conventional method in grease extraction.

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