Extending our investigations on environment protection by agrochemicals diffusion and accumulation, newly formed inclusion combinations of rimsulfuron into zeolite-NaY (Z-NaY)\ud
and -cyclodextrin (-CD) were studied and compared. The reactivity of the included herbicide under UV-irradiation and in the dark was assessed. Many guest/host ratios were tested: the best results were found using 3 g (6.953 mmol) of rimsulfuron per kilogram of zeolite, with 80% inclusion success (5.562 mmol kgÿ1), and a 1: 2 molar ratio, 190 g of rimsulfuron per kilogram\ud
of -CD with 58% inclusion success. The herbicide Z-NaY-combined underwent rapid and effective (halflive 2–7 h) degradation either catalytically or photochemically, giving rise to\ud
different identified by-products. On the contrary, -CD was able to protect rimsulfuron totally both in the dark and under 24-h direct UV irradiation. On the basis of the obtained results,\ud
a different utilization of the two inclusion materials has been suggested