title: Determination of pesticides in coconut (Cocos nucifera Linn.) water and pulp using modified QuEChERS and LC-MS/MS.
abstract: The use of pesticides is directly linked to improvements in productivity and to the preservation of coconut palms. However pesticide analysis is necessary to determine whether pesticide residues in the food products containing coconut are within the maximum residue limits (MRLs), ensuring the quality of these products. This work aimed to develop a method for multiresidue determination of ten pesticides in coconut water and pulp using QuEChERS and LC-MS/MS. The method was effective in terms of selectivity, linearity, matrix effect, accuracy and precision, providing LOD of 3μgkg(-1), LOQ of 10μgkg(-1) and recoveries between 70 and 120% with RSD lower than 20%. The developed method was applied to 36 samples in which residues of carbendazim, carbofuran, cyproconazole and thiabendazole were found below the LOQ in coconut water and pulp.
authors.affiliation: Instituto de Química, Universidade Estadual de Campinas, POB 6154, 13083-970 Campinas, SP, Brazil.
authors.forename: Jordana Alves
authors.initials: JA
authors.lastname: Ferreira
authors.affiliation: Departamento de Engenharia Agronômica, Embrapa Tabuleiros Costeiros, Av. Beira Mar, no 3250, 49025-040 Aracaju, SE, Brazil.
authors.forename: Joana Maria Santos
authors.initials: JMS
authors.lastname: Ferreira
authors.affiliation: Departamento de Engenharia Agronômica, Embrapa Tabuleiros Costeiros, Av. Beira Mar, no 3250, 49025-040 Aracaju, SE, Brazil.
authors.forename: Viviane
authors.initials: V
authors.lastname: Talamini
authors.affiliation: Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
authors.forename: Janice de Fátima
authors.initials: JF
authors.lastname: Facco
authors.affiliation: Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
authors.forename: Tiele Medianeira
authors.initials: TM
authors.lastname: Rizzetti
authors.affiliation: Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
authors.forename: Osmar Damian
authors.initials: OD
authors.lastname: Prestes
authors.affiliation: Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
authors.forename: Martha Bohrer
authors.initials: MB
authors.lastname: Adaime
authors.affiliation: Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
authors.forename: Renato
authors.initials: R
authors.lastname: Zanella
authors.affiliation: Instituto de Química, Universidade Estadual de Campinas, POB 6154, 13083-970 Campinas, SP, Brazil. Electronic address: carlab@iqm.unicamp.br.
authors.forename: Carla Beatriz Grespan
authors.initials: CBG
authors.lastname: Bottoli
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D003059:Cocos / Q000737:chemistry*; D010575:Pesticides / Q000032:analysis / Q000737:chemistry*; D053719:Tandem Mass Spectrometry / Q000379:methods*; D014867:Water / Q000032:analysis / Q000737:chemistry*
chemical_list: D010575:Pesticides; D014867:Water
keywords: Coconut pulp; Coconut water; Cocos nucifera Linn; LC–MS/MS; Modified QuEChERS; Pesticides