Comparison of removal rate for various treatments. The residual amount of Chlorpyrifos (CP) per kilogram of Brussels sprouts after different washing processes: soaking in 10% or 70% ethanol (EtOH) solution at 25 °C for 30 min, irradiating with ultrasonic treatment at 25 °C for 10 min, and pressurizing at 75 MPa, 5 °C (Full-size image (