Research of odor compounds and toxicity in the surface water of Haizhu District in Guangzhou

In this article,the method of GC /MS with liquid-liquid extraction is adopted to analyze the odor compounds in surface water of Haizhu District in Guangzhou.The 21 water samples were collected from the Pearl River and some lakes and ponds.Referring to the related eutrophication index of water samples detected,the source and distribution of the odor compounds have been researched.The results show that:Geosmin(4.0-69.0 ng/L) and 2-Methylisoborneol(4.1-24.9 ng/L) has the highest content.Among all the surface water in Haizhu District,the stench problem is most severe in Pearl River,followed by lakes and ponds,and the water intake is the least;The content of the odor compounds in the front channel is higher than that in the back one,especially in the section between Aozhou Dock and Guangzhou Bridge.It is found that the content and distribution of the odor compounds are closely related to the extent of water pollution and eutrophication,and the purification of surface water in Haizhu District is still facing a serious situation.In addition,Geosmin and 2-Methylisoborneol are highly toxic to the luminous bacteria in the detection range.