Fernández-Pérez Manuel
Department of Inorganic Chemistry, University of Almería, Almería, Spain.
J Environ Sci Health B. 2007 Sep-Oct;42(7):857-62. doi: 10.1080/03601230701555138.
Different controlled release formulations (CRFs) of isoproturon, imidacloprid and cyromazine have been studied to contribute to diminish, somehow, the problems related to the application of conventional formulations. The alginate-based CRFs were based on sodium alginate (1.90%), Technical grade (TG) isoproturon or imidacloprid (1.20%), natural bentonite (3.30%), and water (93.6%), and the lignin-based CRF was based on kraft lignin (50.0%) and TG cyromazine (50.0%). The mobility of non-formulated TG pesticides and CRFs were compared by using soil columns. The use of CRFs retard release and reduce the presence of pesticides in the leachate and, moreover, the pesticides stay in the soil longer. Sorption capacity of the soil for pesticides was measured using batch experiments. The results obtained (11.67 mg kg(- 1) for isoproturon, 3.17 mg kg(- 1) for imidacloprid and 0.63 mg kg(-1) for cyromazine) were in agreement with those obtained under dynamic conditions.
已对异丙隆、吡虫啉和环丙氨嗪的不同控释制剂（CRF）进行了研究，以在一定程度上有助于减少与传统制剂应用相关的问题。基于海藻酸钠的控释制剂以海藻酸钠（1.90%）、工业级（TG）异丙隆或吡虫啉（1.20%）、天然膨润土（3.30%）和水（93.6%）为原料，而基于木质素的控释制剂以硫酸盐木质素（50.0%）和工业级环丙氨嗪（50.0%）为原料。通过使用土柱比较了未配制的工业级农药和控释制剂的迁移性。控释制剂的使用延缓了释放，减少了渗滤液中农药的存在，而且农药在土壤中停留的时间更长。使用批量实验测量了土壤对农药的吸附能力。所得结果（异丙隆为11.67 mg kg⁻¹，吡虫啉为3.17 mg kg⁻¹，环丙氨嗪为0.63 mg kg⁻¹）与动态条件下获得的结果一致。
