Soil and herbicide analysis

Soil and herbicide analysis

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Credit: PEGGY GREB/US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY

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Caption: Soil and herbicide analysis. Laboratory technician loading soil sample extracts (lower centre) into the automatic sampling tray (centre right) of a gas chromatograph-mass spectrometer. This will be used to test the samples for herbicide residues. This research is being carried out by the Agricultural Research Service of the US Department of Agriculture.

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