I need to extract pesticide (Metribuzin) from Soil, before GC analysis. Anyone here to explain step by step sample preparation procedure. I don't have QUECHERS or any other sample preparation kit.
You can use simply a Soxhlet extraction or even shake the soil with organic solvent. Compare few to get best recovery. If the pesticide is not so volatile, you can evaporate part of the solvent from extract to increase the sensitivity of your method.