SEM and IR analysis of biochars can help in determining their sorption capacity for pesticides. But how these analyses can help in determining the degradation of pesticide in these amended soil as compared to unamended soil?
Dear Neha Sharma ,
are you sure that SEM can be used to determine the sorption capacity of say soil for pesticides? Even quantitative FTIR will be a challenge because of the detection limit of the technique. The more conventional way is to carry out batch or column sorption experiment and measure the equilibrium concentration of pesticide left in the supernatent (e.g. by HPLC). Example: Article Effect of charcoal amendment on adsorption, leaching and deg...
Hope this helps? Rgds, Rob.
Are you asking about distinguishing between degradation and sorption OR trying to explain known differences between biochar treatments in degradation rate?
Don't forget that biochars are alkaline and contain minerals, depending on the feedstock beneficial and/or toxic. Did you measure the relevant changes caused by the treatments, e.g. pH, EC, nutrients, respiration rate?
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