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result sql = Ability of biosolids and a cationic surfactant to modify methidathion leaching. Modelling with pescol.
Ability of biosolids and a cationic surfactant to modify methidathion leaching. Modelling with pescol.
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char = i;code = 105
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char = S;code = 83
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char = c;code = 99
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = n;code = 110
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char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
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char = i;code = 105
char = o;code = 111
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char = ;code = 32
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char = h;code = 104
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char = c;code = 99
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
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char = ;code = 32
char = e;code = 101
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char = e;code = 101
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char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
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result sql = Packed columns were prepared with an agricultural soil to examine the ability of two organic soil modifiers, biosolid and the cationic surfactant tetradecyl trimethyl ammonium bromide (TDTMA), to alter the leaching of the insecticide methidathion. Ion chloride was used as a tracer of water flow and the mathematical model PESCOL was selected to predict the mobility of the insecticide. The biosolid addition (SB column) delayed the breakthrough curves for methidathion with respect to the non-amended soil (S) column. The cationic surfactant TDTMA, alone or combined with the biosolid (SS and SBS) and previously incorporated in the soil column, caused the highest retardation of this pesticide in the soil columns. Theoretical retardation factors (TRf) were similar to the experimental Rf values for the S and SB columns, and predicted the high retention observed in the SBS and SS columns. The simulation with PESCOL predicted the experimental results.

Publication: Chemosphere 2003 Dec ;53(8)::843-50.
Publication Date: 2003 Dec
Study Author(s): Sánchez, Lourdes;Romero, Esperanza;Peña, Aránzazu;
Institution: Estación Experimental del Zaidín (CSIC), Departamento de Ciencias de la Tierra y Química Ambiental, E-18008 Granada, Spain.
Shortcut link to this study:
Packed columns were prepared with an agricultural soil to examine the ability of two organic soil modifiers, biosolid and the cationic surfactant tetradecyl trimethyl ammonium bromide (TDTMA), to alter the leaching of the insecticide methidathion. Ion chloride was used as a tracer of water flow and the mathematical model PESCOL was selected to predict the mobility of the insecticide. The biosolid addition (SB column) delayed the breakthrough curves for methidathion with respect to the non-amended soil (S) column. The cationic surfactant TDTMA, alone or combined with the biosolid (SS and SBS) and previously incorporated in the soil column, caused the highest retardation of this pesticide in the soil columns. Theoretical retardation factors (TRf) were similar to the experimental Rf values for the S and SB columns, and predicted the high retention observed in the SBS and SS columns. The simulation with PESCOL predicted the experimental results.
PMID: 14505705

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