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SPE for pesties in fruits/veggies
Posted: Tue Jun 23, 2009 6:49 pm
by vestelshirley
Does anyone have a rather generic sample prep - microwave assisted extraction for pesties/herbies from fruits and vegetables? I have a CEM Mars unit.
Posted: Wed Jun 24, 2009 7:39 am
by H.Thomas
not for the microwave...but have you thought about using the Quechers-Method? Quite universal, validated for some 200 pesticides, and quick and easy.
Posted: Wed Jun 24, 2009 6:16 pm
by Ron
Since modern pesticides are designed to degrade in the presence of heat and water to reduce persistance in the environment I would be cautious in the use of microwave extraction. It may work, but stability studies of the analytes of interest in a fruit matrix would be in order.
I know that a few years ago the Florida state lab and the California state lab charged with pesticide residue analysis used a modified Luke extraction process.
A lot of labs are going to the Quechers method, it is rapidly becoming one of the standard preparations for this type of analysis.
Posted: Wed Jun 24, 2009 9:04 pm
by jh1
Quechers is quickly becoming the popular choice.
http://www.quechers.com/