Various washing protocols have been assessed for efficacy using Agilent LC/MS and GC/MS instrumentation to measure pesticide residues in tomatoes and other produce. Washing procedures in water and various solutions, with and without sonication, were evaluated in the laboratory. In general, the effect of sonication depended on the washing treatment and on the pesticide. A separate experiment measured pesticide residues in contaminated samples before and after being washed in a pilot plant flume, which resulted in reductions of 40 to 90% after one minute in water at room temperature.
Publication number: 5991-3879EN.pdf
Publication Date: April 18, 2014