Baglieri Andrea, Borzí Daniela, Abbate Cristina, Négre Michéle, Gennari Mara
Dipartimento di Scienze Agronomiche, Agrochimiche e delle Produzioni Animali, Sezione di Scienze Agrochimiche, Catania, Italy.
J Environ Sci Health B. 2009 Mar;44(3):220-5. doi: 10.1080/03601230902728153.
The ability of a sodium montmorillonite (CLONa) and two commercial available organoclays having interlayer organic cations possessing different functional groups (CLO20A and CLO30B) was investigated for adsorbing two pesticides namely fenexamid (FEX) and pyrimethanyl (PMT). The two organoclays displayed a higher affinity with the pesticides than the unmodified clay, but the improvement in adsorption capacity varied according to the characteristics of the pesticide and the interlayer organic cation. FEX was adsorbed to a greater extent than PMT by both organoclays, which may be due to the higher hydrophobicity of FEX thereby indicating considerable hydrophobic interaction between the adsorbent/adsorbate systems. Our findings may find application in the removal of water-soluble pesticides from aquifers.
研究了钠蒙脱石（CLONa）以及两种市售有机粘土（具有不同官能团的层间有机阳离子，分别为CLO20A和CLO30B）对两种农药即苯酰菌胺（FEX）和嘧霉胺（PMT）的吸附能力。这两种有机粘土对农药的亲和力高于未改性粘土，但吸附容量的提高因农药特性和层间有机阳离子而异。两种有机粘土对FEX的吸附程度均高于PMT，这可能是由于FEX具有更高的疏水性，从而表明吸附剂/吸附质体系之间存在显著的疏水相互作用。我们的研究结果可能在从含水层中去除水溶性农药方面具有应用价值。
