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Journal of Chemistry
Volume 2016, Article ID 4546584, 9 pages
Research Article

Study on Soil Mobility of Two Neonicotinoid Insecticides

1Agro-Environmental Research Institute, National Agricultural Research and Innovation Centre, Herman O. Utca 15, Budapest 1022, Hungary
2Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest 1111, Hungary
3Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, P.O. Box 35, Tihany 8237, Hungary

Received 31 January 2016; Revised 5 May 2016; Accepted 8 May 2016

Academic Editor: Eulogio J. Llorent-Martinez

Copyright © 2016 Mária Mörtl et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Movement of two neonicotinoid insecticide active ingredients, clothianidin (CLO) and thiamethoxam (TMX), was investigated in different soil types (sand, clay, or loam) and in pumice. Elution profiles were determined to explore differences in binding capacity. Soil characterized by high organic matter content retained the ingredients, whereas high clay content resulted in long release of compounds. Decrease in concentration was strongly influenced by soil types: both CLO and TMX were retained in loam and clay soils and showed ready elution through sandy soil and pumice. Elution capability of the active ingredients in sandy soil correlated with their water solubility, indicating approximately 30% higher rapidity for TMX than for CLO. Soil organic carbon-water partitioning coefficients () determined were in good agreement with literature values with somewhat lower value for CLO in sandy soil and substantially higher values for TMX in clay soil. High mobility of these neonicotinoid active ingredients in given soil types urges stronger precautionary approach taken during their application.