Screening the leaching tendency of pesticides applied in the Amu Darya Basin (Uzbekistan)

Ester Papa, Sara Castiglioni, Paola Gramatica, Victor Nikolayenko, Odil Kayumov, Davide Calamari

Research output: Contribution to journalArticlepeer-review


The Amu Darya River, one of the most important water resources for Uzbekistan and Turkmenistan, was declared a World Disaster Zone in 1991. The great increase in irrigation and the use of pesticides has led to both a lack of water and drinking water contamination. The aim of the present study, part of an EU project on water management guidelines, was to evaluate the leachability of 71 organic pesticides commonly employed in the area, and to assess compounds that could potentially contaminate the river and impair drinking water quality. A multivariate approach is proposed for the pesticide screening, condensing information from different environmental partition indexes (GUS, "modified LEACH", LIN) into a single ranking, the Global Leachability Index (GLI). For a selected data set in water medium this super-index identifies three classes with a risk potential for pesticide leachability, and allows the selection of a small number of chemicals for an analytical survey.

Original languageEnglish
Pages (from-to)3485-3494
Number of pages10
JournalWater Research
Issue number16
Publication statusPublished - Sep 2004


  • Leachability indexes
  • Pesticides
  • Water pollution

ASJC Scopus subject areas

  • Earth-Surface Processes


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