Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.
J Agric Food Chem. 2013 Jun 5;61(22):5215-9. doi: 10.1021/jf401274y. Epub 2013 May 24.
Pesticide sprayed onto crop leaves tends to be washed off by rainwater and discharge into the environment through leaching and runoff, resulting in severe pollution to both soil and water. Here, to control pesticide loss, we developed a loss-control pesticide (LCP) by adding modified natural nanoclay (diatomite) through high-energy electron beam (HEEB) to traditional pesticide. After HEEB treatment, the originally clogged pores in diatomite opened, resulting in plenty of micro-nanopores in diatomite, which are beneficial for the pesticide molecules to access and be adsorbed. This pesticide-diatomite complex tended to be retained by the rough surface of crop leaves, displaying a high adhesion performance onto the leaves, so that the pesticide loss reduced, sufficient pesticide for crops was supplied, and the pollution risk of the pesticide could be substantially lowered.
喷洒在作物叶片上的农药往往会被雨水冲刷掉，通过淋溶和径流进入环境，对土壤和水造成严重污染。在这里，为了控制农药的损失，我们通过高能电子束（HEEB）将改性天然纳米粘土（硅藻土）添加到传统农药中，开发了一种损失控制农药（LCP）。经过 HEEB 处理后，硅藻土中原本堵塞的孔隙被打开，硅藻土中产生了大量的微纳米孔隙，有利于农药分子进入和被吸附。这种农药-硅藻土复合物容易被作物叶片的粗糙表面保留，表现出对叶片的高附着力，从而减少农药损失，为作物提供足够的农药，并大大降低农药的污染风险。
