Study on Sorption of Monocrotophos and Parathion—methyl on Yellow River‘s Sediments

A study on the sorption of monocrotophos and parathion-methyl on Yellow River‘s sediments was performed.The influence of some factors,such as pH value and ionic strength,on the sorption was investigated and first order kinetics mode for the sorption of monocrophos was shown.Freundlich isotherm was suggested as the most appropriate type for monocrophos an parathion-methyl.But the sorption isotherms of monocrotophos and parathion-methyl are also in conformity with Langmuir equation.Both partition and adsorption occur to the sorption of monocrophos to Yellow River‘s sediments.but partition is the predominant for that of parathionmethyl.     

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现在美国,越来越多的地方已没有鸟儿飞来报春;清晨早起,原来到处可以听到鸟儿的美妙歌声,而现在却是异常寂静。鸟儿的歌声突然沉寂了,鸟儿给予我们这个世界的色彩、美丽和乐趣也因某些地方尚未感受其作用而被忽视,以致现在