title: Analysis of organo-chlorine pesticides residue in raw coffee with a modified "quick easy cheap effective rugged and safe" extraction/clean up procedure for reducing the impact of caffeine on the gas chromatography-mass spectrometry measurement.
abstract: The control of pesticide residues on raw coffee is a task of great importance due to high consumption of this beverage in Italy and in many other countries. High caffeine content can hamper extraction and measurement of any pesticide residue. A tandem extraction protocol has been devised by exploiting the quick easy cheap effective rugged and safe (QuEChERS) scheme for extraction, coupled to a dispersive liquid-liquid micro-extraction (DLLME) in order to drastically reduce caffeine content in the final extract. Gas chromatography-mass spectrometry (GC-MS) has been used for quantification of organo-chlorine pesticides in single ion monitoring (SIM) mode. Method has been validated and performances meet the criteria prescribed by European Union regulations.
authors.affiliation: ARPA (Regional Environmental Protection Agency Agenzia Regionale of Friuli Venezia Giulia) - Pordenone Laboratory, Italy.
authors.forename: Bruno
authors.initials: B
authors.lastname: Bresin
authors.affiliation: ARPA (Regional Environmental Protection Agency Agenzia Regionale of Friuli Venezia Giulia) - Pordenone Laboratory, Italy.
authors.forename: Maria
authors.initials: M
authors.lastname: Piol
authors.affiliation: ARPA (Regional Environmental Protection Agency Agenzia Regionale of Friuli Venezia Giulia) - Pordenone Laboratory, Italy.
authors.forename: Denis
authors.initials: D
authors.lastname: Fabbro
authors.affiliation: ARPA (Regional Environmental Protection Agency Agenzia Regionale of Friuli Venezia Giulia) - Pordenone Laboratory, Italy.
authors.forename: Maria Antonietta
authors.initials: MA
authors.lastname: Mancini
authors.affiliation: External Mass Spectrometry Consultant p/o ARPA - Pordenone Laboratory, Italy. Electronic address: bruno.casetta@yahoo.com.
authors.forename: Bruno
authors.initials: B
authors.lastname: Casetta
authors.affiliation: ARPA (Regional Environmental Protection Agency Agenzia Regionale of Friuli Venezia Giulia) - Pordenone Laboratory, Italy.
authors.forename: Clorinda
authors.initials: C
authors.lastname: Del Bianco
mesh_terms: D002110:Caffeine / Q000032:analysis*; D003069:Coffee / Q000737:chemistry*; D005062:European Union; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D059627:Liquid Phase Microextraction; D010573:Pesticide Residues / Q000032:analysis*
chemical_list: D003069:Coffee; D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D002110:Caffeine
keywords: Caffeine; Coffee; DLLME; Extraction; Pesticides; QuEChERS