2006
DOI: 10.1590/s0100-40422006000400034
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Adsorção de glifosato sobre solos e minerais

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Cited by 41 publications
(31 citation statements)
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“…Morillo et al (2002), who studied the effect of pH on glyphosate adsorption in soils, reported that this adsorption diminished as pH increased in the soil water solution. This reduction in adsorption could be a consequence of increasing negative charge at the soil surface because of reduction in pH in water, thus causing a lower electrostatic attraction, reducing its adsorption (Toni et al, 2006).…”
Section: Glyphosate Mobilitymentioning
confidence: 99%
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“…Morillo et al (2002), who studied the effect of pH on glyphosate adsorption in soils, reported that this adsorption diminished as pH increased in the soil water solution. This reduction in adsorption could be a consequence of increasing negative charge at the soil surface because of reduction in pH in water, thus causing a lower electrostatic attraction, reducing its adsorption (Toni et al, 2006).…”
Section: Glyphosate Mobilitymentioning
confidence: 99%
“…Adsorption of glyphosate is mainly related to the mineral fraction of the soil, especially on Fe and Al oxides and clays, but organic matter also plays a fundamental role in the process (Toni et al, 2006). Once adsorbed, glyphosate tends to persist in the soil for years (Amarante Junior et al, 2002), with the active component remaining as a residue attached to soil colloids .…”
Section: Introductionmentioning
confidence: 99%
“…2 Dentre eles está o glifosato [n-(fosfonometil)glicina], C 3 H 8 NO 5 P, que segundo dados de 2009 3 representa cerca de um terço do volume total de praguicidas comercializados no mercado brasileiro, estimando-se que no Brasil o consumo seja de 200 milhões de L por ano. O produto é usado em mais de uma centena de culturas, 4 como soja, trigo, milho, algodão, feijão e arroz. 3 Embora o glifosato possua elevada eficiência na eliminação de ervas daninhas e seja citado como o mais vendido em todo o mundo, 5 existem evidências de seus efeitos deletérios no ambiente como, por exemplo, destruição do habitat de animais inferiores e, em seres humanos, como edema pulmonar e dificuldade respiratória.…”
Section: Introductionunclassified
“…9 A adsorção do glifosato pode ocorrer devido à presença de matéria orgânica, óxidos de ferro e alumínio e, também, devido às argilas que compõem o solo. 4 Uma vez adsorvido, o glifosato pode persistir durante anos no solo. 11 O glifosato apresenta elevada capacidade de adsorção, com coeficiente de partição entre o carbono orgânico do solo e a água de 21699 mL g -1 , variando entre 884 mL g -1 , em solo arenoso, e 60000 mL g -1 , em solo argilo-siltoso.…”
Section: Introductionunclassified
“…If the concentration of organic matter (OM) in the soil system is not high, GPS interacts with metal cations mainly on the surface of soil minerals. 14 Because GPS remains as an anionic charged molecular structure in soils it tends to be more efficiently adsorbed on the surface of positively charged mineral particles than any other neutral or positively charged chemical. 6,11 However, this interaction of GPS and surface metal cations can be the cause of many reported environmental problems.…”
Section: Glyphosate (Gps) (mentioning
confidence: 99%