Volume 11, No. 6, November 2011, Pages 783-790 PDF(638 KB)
Investigation on the Behavior of Pesticides in Atmosphere
Pasquale Avino1, Giuseppe Cinelli2, Ivan Notardonato2, Mario V. Russo2
1 DIPIA, INAIL (ex-ISPESL), via Urbana 167, 00184 Rome, Italy
2 Faculty of Agriculture, University of Molise, via De Sanctis, Campobasso, Italy
Although pesticides are widely used in agriculture, they and in particular the relative residues in foodstuffs, water and atmosphere, may cause remarkable sanitary problems due to the harmful effects (carcinogenic and mutagenic effects) on the human health. In fact, their spread in waters and atmosphere can produce undesired effects on various organisms and/or water contamination.
This paper shows an analytical approach based on XAD-2 adsorbent and GC analysis for evaluating the pesticide trend in atmosphere: in particular, the pesticides investigated are omethoate, dicrotofos, disulfoton, dimethoate, parathion methyl, formothion, paraoxon ethyl, malaoxon, parathion ethyl, iodofenfos and triazofos. For the analytical methodology a linearity response was obtained (r2 = 0.9988) in GC-NPD whereas the limits of detection range between 2 and 5 pg/μL in GC-NPD with a Relative Standard Deviation below 9.5. Finally, this approach has been successfully applied to real samples: the results show that dimethoate concentration decreases with increasing distance from the sampling site but it is still persistent in atmosphere after few days from the pesticide spraying.
Pesticides; XAD-2 adsorbent; GC analysis; Atmosphere; Air quality.