Comparison of Different Home/Commercial Washing Strategies for Ten Typical Pesticide Residue Removal Effects in Kumquat, Spinach and Cucumber

Yangliu Wu, Quanshun An, Dong Li, Jun Wu and Canping Pan
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Yangliu Wu: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
Quanshun An: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
Dong Li: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
Jun Wu: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
Canping Pan: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China

IJERPH, 2019, vol. 16, issue 3, 1-20

Abstract: Home processing can reduce pesticide residues in agricultural products, and the common forms of treatment include washing, peeling, blanching, and cooking. In this study, the removal effects of tap water, micron calcium solution, alkaline electrolyzed water (AlEW), ozone water, active oxygen, and sodium bicarbonate on 10 typical pesticide residues in kumquat, cucumber, and spinach were investigated. The residue magnitudes were determined by chromatography–tandem mass spectrometry (GC-MS/MS, LC-MS/MS), combined with the QuEChERS pretreatment method. The model tests showed that the results of soaking and greenhouse were close. The removal effects of pesticide residues in kumquat and cucumber washing by alkaline electrolyzed water with a high pH value, micron calcium, and active oxygen solution were better than other washing solutions. The sodium bicarbonate solution, ozone water, and active oxygen solution were more effective in reducing pesticide residues in spinach than others. Active oxygen solution showed a better removal efficiency for the 10 pesticides than other treatments because of its alkalinity and oxidizability. Among the ten pesticides, pyrethroid pesticides had a higher removal rate. Additionally, chlorpyrifos were the most difficult to remove. For the majority of pesticides, the pesticide residue magnitudes showed a gradual reduction when increasing the washing time. The results indicated that alkaline solutions were effective for the reduction of pesticide residues when the washing time was longer than 15 min.

Keywords: pesticide residues; washing process; alkaline electrolyzed water; active oxygen; micron calcium solution (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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