Examination of the MCPA and MCPP Mobility in Soils by Thin Layer Chromatography (CROSBI ID 490574)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Petrović, Mira ; Barbarić, Željka ; Kaštelan-Macan, Marija ; Ivanković, Danijela ; Horvat, Alka J.M.
engleski
Examination of the MCPA and MCPP Mobility in Soils by Thin Layer Chromatography
The widespread use of pesticides for agricultural purposes and their increasingly frequent occurrence in underground waters have fostered research of their leaching from soils and development of improved methods for studying their mobility. MCPA and MCPP are hormone-type herbicides widely used as a mixture for the control of annual and perennial weeds in cereals. MCPA, MCPP, and their salt forms are soluble in water and very mobile in a variety of soils, so they may potentially leach into groundwater. Their mobility in soil largely depends on soil texture, organic matter content and soil pH. The aim of this work was to examine how the herbicides mobility is altered by the presence of fertilizers when both coexist in soil as a result of human activity. To correlate the pesticides mobility with their adsorption properties one of the most frequent methodes, soil thin-layer chromatography (STLC) is used, since it straghtforward, rapid and inexpensive. Sandy loam and clay loam soils used in this study were collected from the A horizon and their physico-chemical properties (sand, clay, silt and organic matter content, pH(H2O), pH(KCl), cation exchange capacity) were determined by standard methods. Soil TLC plates were prepared by drying, grinding and sieving the soil, preparing the slurry and spreding it as a 0.5 mm thick layer. The influence of NPK and KAN fertilizers, as well as, the fertilizers components KCl, (NH4)2HPO4, NH4NO3, NH4OH, on the mobility of MCPA and MCPP in sandy loam and clay loam soils was studied. Frontal RF-values were measured as the ratio of distance moved by the herbicide to that by developer. It can be concluded that the percentage of sand, silt and clay, as well as chemical structure properties of the herbicides influence the rate of propagation of the herbicide solution through the soil. Increased fertilizer content result in increasing mobility in both types of examined soils.
MCPA; MCPP; mobility; soil; thin layer chromatography
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Podaci o prilogu
75-75-x.
2000.
objavljeno
Podaci o matičnoj publikaciji
6th International Symposium "New Achievements in Chromatography"
Smolec, Sonja ; Rogošić, Marko
Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI)
Podaci o skupu
New achievements in chromatography
poster
11.10.2000-13.10.2000
NP Plitvička jezera, Hrvatska