title: Ultra performance liquid chromatography atmospheric pressure photoionization high resolution mass spectrometric method for determination of multiclass pesticide residues in grape and mango juices.
abstract: A novel analytical method was developed for determination of organochlorine, synthetic pyrethroid, organophosphate and carbamate pesticide residues in fruit juices using ultra performance liquid chromatography-atmospheric pressure photoionization-high resolution mass spectrometry (UPLC-APPI-HRMS). The analytes were extracted from fruit juices by dispersive solid-phase extraction using multi-walled carbon nanotubes (MWCNTs). The analysis was carried out in full scan mode using dual ionization mode of APPI in the mass range of 100-650 units. The limit of detection and limit of quantification values for the pesticides were in the range of 0.025-0.15 ng mL(-1) and 0.1-0.5 ng mL(-1) respectively. The matrix effect of the method was found to be low and extraction recoveries were in the range of 60-110%. Some of the real fruits juice samples showed the presence of some pesticides in the range of 6.5-24.8 ng L(-1).
authors.affiliation: National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Telangana, India.
authors.forename: Pragney
authors.initials: P
authors.lastname: Deme
authors.affiliation: National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Telangana, India. Electronic address: saradhi@iict.res.in.
authors.forename: Vijayasarathi V R
authors.initials: VV
authors.lastname: Upadhyayula
mesh_terms: D001628:Beverages / Q000032:analysis*; D002219:Carbamates / Q000032:analysis; D002853:Chromatography, Liquid; D031022:Mangifera / Q000737:chemistry*; D013058:Mass Spectrometry; D010573:Pesticide Residues / Q000032:analysis*; D010575:Pesticides / Q000032:analysis; D052616:Solid Phase Extraction; D027843:Vitis / Q000737:chemistry*
chemical_list: D002219:Carbamates; D010573:Pesticide Residues; D010575:Pesticides
keywords: Atmospheric pressure photo ionization; Fruit juices; Liquid chromatography–mass spectrometry; Multiwalled carbon nanotubes; Pesticide residues