Pesticide residue analysis. Researcher preparing food extracts that are to be analysed for pesticide residues. This research is being carried out usin

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Pesticide residue analysis. Researcher preparing food extracts that are to be analysed for pesticide residues. This research is being carried out using the QUECHERS (quick, easy, cheap, effective, rugged and safe) method. In this procedure, the samples (usually fruit, vegetables and cereals, but can include other plants such as tobacco) are homogenised in a blender, centrifuged, separated and then analysed for traces of pesticides by gas chromatography.

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Photo credit: © UK CROWN COPYRIGHT COURTESY OF FERA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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