QuonFuseD by QuEChERS?

Currently the big push for sample prep is using QuEChERS, which stands for “Quick, Easy, Cheap, Effective, Rugged, and Safe”. It is a much more streamlined method, when compared to traditional liquid/liquid extractions and even SPE. Pesticide residues in various matrices are often analyzed by QuEChERS methodology, and today it is probably the most often used sample preparation approach in pesticide residue analysis worldwide.

Three simple steps are involved with all QuEChERS methods: Homogenization of sample, extraction and partitioning with an organic solvent and salt solution, and clean-up using dSPE tubes.

Many QuEChERS analysis can be done by using the Original Unbuffered Method, which is the simplest. Additionally, buffered methods exist which can improve recoveries for pH sensitive pesticides: EN 15662, Mini-Multiresidue, or AOAC 2007.01.

In tech service, we quite often receive inquiries on QuEChERS. Questions like “How do I choose which QuEChERS products I need for my analysis?” or How do I use my QUEChERS products?” What most folks don’t know is that proven methods are already in place. By using our extensive bibliography, one can quickly find a method to adopt for their particular analysis.
Page 7 of our QuEChERS guide illustrates exactly what dSPE tubes/sorbents are needed for each of the published QuEChERS methods, including dSPE tubes for generic or universal use.

Validation and proficiency data for the QuEChERS method are available for a wide variety of pesticides in several common food matrices at www.quechers.com.

For additional resources and products, please check out all of our latest offerings on our QuEChERS landing page.

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2 Responses to “QuonFuseD by QuEChERS?”

  1. Ankush Bhone says:

    Dear Sir/madam,

    I am working in Shimadzu Analytical India Pvt. Ltd as an Sr. Application Chemist under GC/GCMS-MS group.

    I am currently working with sample preparation for pesticides analysis in fish sample.

    I like to know if you have any method for sample preparation using QuEChERS method? So please share with us.

    This will be a great help for us.

    I am currently doing trials with some other references. (QuEChERS method only).

    Kindly do the needful.

    Best Regards,

    Ankush Bhone

  2. Tim Herring says:

    Thanks for your inquiry Ankush.

    If doing base-sensitive pesticides, then the EN method should be used.
    http://www.restek.com/pdfs/805-01-001.pdf
    The buffering salts recommended for the acids would be Restek catalog# 26326.
    http://www.restek.com/catalog/view/10681/26236

    This is probably not the case though with fish, and the Original Unbuffered Method could work too.
    http://www.restek.com/pdfs/805-01-004.pdf
    Restek catalog # 23992 would be the correct extraction salts.
    http://www.restek.com/catalog/view/10681/23992

    I hope that helps.

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