Analyzing Multiresidue Pesticides Using QuEChERS - Fundamentals

The fundamentals of multiresidue pesticide analysis using the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) technique are discussed, including the step-by-step process. This technique has revolutionized multiresidue, multiclass pesticide analysis. There are three main methods for use for multiresidue pesticide analysis: Original (containing non-buffered salts), the Association of Official Agricultural Chemists (AOAC) Method, and the European Standard (EN) Method. This video mainly focuses on AOAC. The first step is Extraction/Partitioning (Acetonitrile salting-out extraction of a sample), the second step is clean-up of the extract using Dispersive Solid Phase Extraction (dSPE), and the final step is to analyze the results.
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#AOAC
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[@hemlalh4484]

How to extract pesticides from oils and fats? Please provide notes.

[@duonglam9490]

after the d-SPE step, Ms. Joan pippetted the ACN layer direct to vial without filtering with 0.22um filter, I wonder that the final extract is really clear without solid particle that can harm the LC system?. Do we need to add filtering step on this experiment?

[@agilent]

If filtration is used, one would need to be sure analytes are not lost during the filtration process. We do not filter any extract after dSPE, but we do use a guard column.

[@golumworks]

Aren’t the salts used (Na, Mg) not mass spec compatible? Even with centrifuging, you can’t really ensure all salts were removed to an acceptable level.

[@malaisamysivakumar6016]

very nice explanation

[@rashi2383]

Sir iam searching for gulf coutry please sugest me

[@rashi2383]

For job

[@alanreed3584]

"example of the sample" god i can only imagine how many takes that sentence required ^_^

[@mariovernandes6197]

how to extract pesticide from saliva ? is the quechers method can solve it?

[@konsueloramirez2047]

I wonder what these guys are up to these days

[@afafahmed8869]

How to extract carrot sample if there is any method to avoid losing any analyte after clean up

[@chamalikamanawadu2805]

From where can we get the notes?

[@agilent]

Here you go www.agilent.com/cs/library/datasheets/public/QuEChERS_Downloadable_Notes.pdf :)

[@Thepenthousesounds]

@@agilent Thank you

[@jagdishpatnaik7459]

You. Know. Mango. Mango. Are. The. Best. Fruit. Fast. As. You. Like

[@jagdishpatnaik7459]

Quiet. Choice. It. Iswright

[@medomar5673]

V