Groundwater Ubiquity Score: A Simple Method for Assessing Pesticide Leachability

Sorption, degradation and mobility of microcystins in Chinese agriculture soils: risk assessment for groundwater protection

“…The leaching potential of organic pollutants such as pesticides are usually assessed by the normalized distribution of the soil organic carbon partition coefficient (K oc ) (Wauchope Stauffer et al, 1989), GUS parameters (Gustafson, 1989) and laboratory column leaching (OECD, 2003;Oppel et al, 2004). K oc values of three MC variants were calculated from their K d values in the three soils, the average values for MC-RR, LR and Dha 7 LR were 224, 46.3 and 84.8 respectively (Table 3).…”

“…The objectives of this study are: (1) characterize the adsorption of three MC variants in three different soils and identify the main factors influencing this process; (2) determine the persistence of MCs in soils (expressed as DT 50 , half time for degradation) in order to define their leaching potential according to Gustafson (1989); and (3) investigate the leaching behavior of MCs in Chinese agriculture soils. The results of this study will lead to a better understanding of the leaching potential of MCs in soils and the risks associated with the use of toxic cyanobacterial blooms as plant fertilizers.…”

Análise de risco de contaminação de águas subterrâneas por resíduos de agrotóxicos no município de Campo Novo do Parecis (MT), Brasil

“…Uma vez determinado o princípio ativo é possível, através de sua estrutura química, determinar a dinâmica do composto no ambiente, incluindo sua mobilidade e degradabilidade e, assim, analisar o potencial de contaminação das águas por meio de modelagem matemática. Os resultados desses estudos normalmente são apresentados na forma de índices e intervalos numéricos, tais como os critérios da Agência de Proteção Ambiental Norte-Americana (EPA, do inglês Environmental Protection Agency), o índice de vulnerabilidade de águas subterrâneas (GUS) (do inglês Groundwater Ubiquity Score) e o método de Goss, que são os crité-rios de avaliação do potencial de contaminação de águas superficiais (ANDRADE et al, 2011;GOSS, 1992 O risco de contaminação de águas subterrâneas foi realizado de acordo com índice de GUS e de acordo com os critérios da EPA (ANDRADE et al, 2011;FERRACINI et al, 2001;GAMA;CAVALCANTE, 2013;PRIMEL et al, 2005 (GUSTAFSON, 1989;PRIMEL et al, 2005): Dentre estes agrotóxicos, alguns foram detectados em outras regiões do estado (CARBO et al, 2008;POSSAVATZ et al, 2014).…”

Spinosad Adsorption on Humic and Clay Constituents of Lacustrine Egyptian Soils and Its Leaching Potential

“…A scoring methodology was suggested by Gustafson (1989) to estimate the potential of pesticides to contaminate groundwater. The groundwater ubiquity score (GUS) score is calculated using the persistence of pesticides and their adsorption strength to soil particles.…”