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激光迅速清除土壤中污染物

2017-09-07 06:31:52   中国青年网

美国科学家8月30日发布消息,通过实验发现,用激光照射土壤可以分解其中的有机污染物,效率比传统方法更高,且成本较低。

研究人员称,他们用多孔二氧化硅材料模拟土壤,使其受到有机化合物DDE的污染,然后用高能红外激光束照射,发现DDE从土壤中消失。DDE是杀虫剂滴滴涕(DDT)的主要代谢产物之一。激光照射能在局部产生数千摄氏度的高温,足以破坏DDE分子的化学键,使其分解成水和二氧化碳等。

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