ULTRASOUND ASSISTED EXTRACTION?
Posted: Fri Mar 01, 2013 2:14 pm
by MSCHemist
I just came accross this method in several food analytical chem papers and was curious about it.
http://naldc.nal.usda.gov/download/42350/PDF
http://www.sciencedirect.com/science/ar ... 7701000669
http://www.ingentaconnect.com/content/t ... 5/art00004
I often use a Branson sonicator bath to help mix my samples. What kind of equipment do you need for it? It it mainly used for unprocessed plant tissue or flavors?
Re: ULTRASOUND ASSISTED EXTRACTION?
Posted: Tue Mar 05, 2013 3:50 pm
by AICMM
MSChemist,
In my opinion, US baths do not have enough oomph. That's why the EPA method for explosives has such a long extraction time.
Use a real US source.
Comparison of ultrasonic assisted digestion with traditional methods for alpha/beta analysis
D. Dale, G. Brooks, M. Monagle
Journal: Journal of Radioanalytical and Nuclear Chemistry - J RADIOANAL NUCL CHEM , vol. 236, no. 1, pp. 199-204, 1998.
Best regards,
AICMM
Re: ULTRASOUND ASSISTED EXTRACTION?
Posted: Thu Mar 07, 2013 3:27 am
by MSCHemist
What type of equipment do you need. The type with the probe that goes directly in solution. I used that back when I was doing Mol Bio to lyse E. coli cells.
Re: ULTRASOUND ASSISTED EXTRACTION?
Posted: Tue Mar 19, 2013 10:00 pm
by James_Ball
What type of equipment do you need. The type with the probe that goes directly in solution. I used that back when I was doing Mol Bio to lyse E. coli cells.
I would think something similar to this would be what you need
http://www.emersonindustrial.com/en-US/ ... fault.aspx
This is a link to the USEPA method for Ultra Sonic Extraction of Organics from Soils using the above type ultra sonic cell disruptor.
http://www.epa.gov/osw/hazard/testmetho ... /3550c.pdf