PMID: 11931453Apr 5, 2002Paper

Adsorption and degradation of the weak acid mesotrione in soil and environmental fate implications

Journal of Environmental Quality
J S DysonM C G Lane

Abstract

The ability of soils to adsorb and degrade pesticides strongly influences their environmental fate. This paper examines the adsorption and degradation of a weak acid, a new herbicide mesotrione 12-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione], in 15 different soils from Europe and the USA. Experiments were conducted to understand the influence of soil properties, covering a wide range of soil textures, soil pH values (4.4 to 7.5), and organic carbon contents (0.6 to 3.35%). Mesotrione adsorption (Kd values ranged from 0.13 to 5.0 L/kg) was primarily related to soil pH, and to a lesser extent by percent organic carbon (%OC). As soil pH rose. mesotrione Kd values got smaller as mesotrione dissociated from the molecular to anionic form. Mesotrione degradation (half-lives ranged from 4.5 to 32 d) was also related to soil pH, getting shorter as soil pH rose. Simple regression of mesotrione adsorption against soil pH and %OC and against degradation provided a close fit to the data. The correlation between mesotrione adsorption and degradation means that Kd and half-life values are only relevant for use in environmental fate assessment if these values are "paired" for the same soil pH and %OC. The implications were as illu...Continue Reading

Citations

Sep 28, 2012·Archives of Environmental Contamination and Toxicology·Olivier CrouzetClarisse Mallet
Jun 21, 2011·Environmental Science & Technology·Abdul GhafoorNicholas J Jarvis
Jul 21, 2015·The Science of the Total Environment·Eva Pose-JuanMaría Sonia Rodríguez-Cruz
Mar 15, 2011·Journal of Hazardous Materials·Nasr BensalahAhmed Abdel-Wahab
Mar 1, 2011·The Science of the Total Environment·A GhafoorJ Stenström
May 22, 2009·Chemosphere·Pia H JensenHans Christian B Hansen
Mar 10, 2009·The Science of the Total Environment·A M A van der LindenA Leijnse
Aug 8, 2015·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Marco MilanFrancesco Vidotto
Jun 14, 2015·Environmental Monitoring and Assessment·Sushma BishtRajvir Singh
Jul 1, 2015·Environmental Science and Pollution Research International·Olivier CrouzetClarisse Mallet
May 31, 2015·Journal of Environmental Management·Kathleen E HallWilliam C Koskinen
Jan 6, 2009·Environmental Pollution·Isabelle BatissonJacques Bohatier
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Apr 24, 2015·Environmental Science and Pollution Research International·Sana RomdhaneLise Barthelmebs
Jun 3, 2016·Frontiers in Microbiology·Sana RomdhaneFabrice Martin-Laurent
Aug 7, 2016·The Science of the Total Environment·Piotr KaczynskiElzbieta Wolejko
Oct 16, 2016·Environmental Science and Pollution Research International·Hanna BarchanskaMagdalena Kurek
Nov 30, 2016·Bulletin of Environmental Contamination and Toxicology·Wangcang SuChuantao Lu
Aug 13, 2005·Chemosphere·Gerda K MortensenHans C B Hansen
Jan 9, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Mahsa FooladSay Leong Ong

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