Study of the bioavailability of diuron aged in agricultural soils
2016
Rubio Bellido, Marina | Villaverde Capellán, J. | Morillo González, Esmeralda | Lara Moreno, Alba | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
Thís study was conducted to determine the relationship between bioavailability, measured by biomimetic assays, of aged herbicide diuron in 10 selected soils with different properties and the amounts extracted by mild solvents. the three selected m1ld extractants were bula no!, 2-hydroxypropyl-¡3-cyclodextrin and Ca CI2. Biomimetic assays were conducted lo estimate the diuron fraclion capable lo be mineralised in s01l by a specific diuron degrader microbial consortium designed in our labaralorles. Biomimetic results showed that !he diuron fraction extracted by butanol was ¡he most reliable chemicallechnique capable lo predict both, diuron availability for mineralisation (r2 0.97, slope 1.56 and intercept -31.9). HPBCD was Ihe second mild extractan! capable lo estimate he biomimetic results being the worst results showed by using Ca CI2 solution. The dala presented demonstrated Ihal a solvent extraction (butanol) procedure may serve as the basis for a simple and rapid procedure for assessing diuron bioavailability in soils with different characteristics.
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