Effect in glyphosate adsorption on clays and soils heated and characterization by FT–IR spectroscopy

Adsorption of glyphosate in a forest soil: a study using Mössbauer and FT-IR spectroscopy

“…[4][5][6][7][11][12][13]16,32,42 They found that the GPS phosphonate group interacts with metals, and in some cases, amine and/or carboxylic groups also interact with metals. Thus, forest reserve soil samples should also show an FT-IR band due to the interaction of metals (Fe…”

“…[29][30][31] The adsorption of GPS onto soils of Paraná State was studied by da Cruz et al 4 and de Santana et al. 32 The FT-IR spectrum of GPS adsorbed onto the soil of a Londrina area farm ( ) in soils. 32 The bands at 1632 and 1407 cm -1 were attributed to the interaction between the carbonate group of GPS ( Figure 1) and Fe 3+ in soils.…”

“…32 The FT-IR spectrum of GPS adsorbed onto the soil of a Londrina area farm ( ) in soils. 32 The bands at 1632 and 1407 cm -1 were attributed to the interaction between the carbonate group of GPS ( Figure 1) and Fe 3+ in soils. 29 As shown in Figure 1S, supplementary material, the complex GPS/Fe 3+ is not electroactive, because increasing concentrations of GPS causes a decrease in current due to decreasing concentration of Fe Figures 2, 3).…”

Adsorção de glifosato sobre solos e minerais

“…Outros autores também mostraram que adsorção do glifosato sobre argilas diminui com o aumento do pH 21,27 . No entanto, segundo Glass 24 a adsorção de glifosato sobre ilita independe do pH.…”

“…De Santana et al 27 41 e da Cruz et al 21 demonstraram que o fosfato pode deslocar o glifosato das argilas, porém, isto foi atribuído à utilização de altas concentrações de fosfato, ou seja, pelo efeito de massas o glifosato é dessorvido das argilas pelo fosfato.…”