title: Removal of six pesticide residues in cowpea with alkaline electrolysed water.
abstract: BACKGROUND
  Reduction of six pesticide residues (isoprocarb, chlorpyrifos, bifenthrin, beta-cypermethrin, difenoconazole and azoxystrobin) in cowpea by alkaline electrolysed water (AlEW) solutions with different pH was investigated. The commonly used washing treatments in household processing were used for comparison.
  
  
  RESULTS
  The residue magnitudes were determined by gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). Results showed that the removal effect of AlEW solution on the six pesticides was superior to tap water, 5% sodium chloride, 5% sodium carbonate and 5% acetic acid solution. AlEW with pH 12.2 had more potential to eliminate the six pesticides in cowpeas. Moreover, the reduction of pesticide residues gradually increased with the increase of washing time.
  
  
  CONCLUSIONS
  This study demonstrated that AlEW solution with pH of 12.2 could be used to reduce pesticide residues on fresh cowpea samples. © 2016 Society of Chemical Industry.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, P.R. China.
authors.forename: Yongtao
authors.initials: Y
authors.lastname: Han
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, P.R. China.
authors.forename: Le
authors.initials: L
authors.lastname: Song
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, P.R. China.
authors.forename: Quanshun
authors.initials: Q
authors.lastname: An
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, P.R. China.
authors.forename: Canping
authors.initials: C
authors.lastname: Pan
mesh_terms: D003666:Decontamination / Q000379:methods*; D004572:Electrolysis / Q000379:methods*; D005511:Food Handling; D005659:Fungicides, Industrial / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007306:Insecticides / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D013997:Time Factors; D000070658:Vigna / Q000737:chemistry*
chemical_list: D005659:Fungicides, Industrial; D007306:Insecticides; D010573:Pesticide Residues
keywords: GC-MS/MS; alkaline electrolysed water; cowpea; pesticide residues