Analvsis of Organophosphorus Pesticides in Water by Graphitized Carbon Black Extraction and Gas Chromatouraphy-Mass Spectrometry

  • Ma. Pythias Espino Institute of Chemistry, University of the Philippines, Quezon City
  • Diana S. Aga Chemistry Department, University of Nebraska-Kearney, Nebraska
  • Mihn H. Nguyen Centre for Environmental Chemistry, Hanoi University of Science, Hanoi
  • Heinz Singer Swiss Federal Institute for Environmental Science & Technology, EAWAG, Dübendorf
  • Michael Berg Swiss Federal Institute for Environmental Science & Technology, EAWAG, Dübendorf
  • Stephan Müller Swiss Federal Institute for Environmental Science & Technology, EAWAG, Dübendorf
Keywords: organophosphorus pesticides, solid-phase extraction, carbopack, gas chromatography/mass spectrometry, water analysis

Abstract

A solid-phase extraction (SPE) procedure using graphitized carbon black (GCB) was developed to study organophosphorus pesticides (OPs) in natural water samples. Determination was carried out by gas chromatography-mass spectrometry (GC-MS) using single-ion monitoring. The pesticides investigated include heptenophos, diazinon, chlorpyrifos methyl, parathion methyl, paraoxon, fenitrothion, malathion, parathion ethyl, phosalone, and azinphos ethyl. Recoveries in different water samples ranged from 38 to 161% and the standard deviations were from 0.9 to 31%. The detection limits ranged from 0.1 to 8 ng/L. The method described here has practical applications to environmental investigations that require trace analysis of OP compounds in water.
How to Cite
Espino, M. P., Aga, D. S., Nguyen, M. H., Singer, H., Berg, M., & Müller, S. (1). Analvsis of Organophosphorus Pesticides in Water by Graphitized Carbon Black Extraction and Gas Chromatouraphy-Mass Spectrometry. KIMIKA, 17(1), 13-18. https://doi.org/10.26534/kimika.v17i1.13-18
Section
Research Articles