不同吸附材质对毒死蜱和溴氰菊酯的净化效果分析

Analysis of Purification Effect of Different Adsorption Materials on Chlorpyrifos and Deltamethrin

为探明玄武岩和沙子对稻田水体毒死蜱和溴氰菊酯的净化效果,使用玄武岩和沙子构建2个生态槽,然后将稻田水引入2个生态槽和1个静置槽,采用固相萃取仪-气相色谱法(ECD)对3个水槽中的水体进行跟踪监测。实验结果表明:采用程序升温、不分流进样的色谱条件建立的溴氰菊酯和毒死蜱的标准曲线相关系数高,重现性好,方法可用;沙子对毒死蜱和溴氰菊酯均有较明显的净化作用;玄武岩对毒死蜱有一定净化效果,但对溴氰菊酯的净化不明显;碱性环境有助于加速水体中毒死蜱和溴氰菊酯的净化。

To verify the purification effect of basalt and sand on chlorpyrifos and deltamethrin in paddy field water,baslt and sand ecological tanks and a static tank were constructed to draw farmland ditch water.GC(ECD)-solid-phase extraction was used to determine the paddy field water in three different tanks.A significant correlation coefficient of the standard curve between deltamethrin and chlorpyrifos showed that temperature-programmed and splitless injection chromatographic conditions were good.Sand can purify chlorpyrifos and deltamethrin obviously,basalt had a certain purification of chlorpyrifos,but the purification of deltamethrin was not obvious,which indicated that the alkaline environment was beneficial to accelerate purification of chlorpyrifos and deltamethrin in water.