Research advance in ecotoxicological effects of chlorates

Abstract

Abstract: Chlorates are a group of toxic substances with significant ecological risk.Last century,sodium chlorate was used to be as non-selective contact herbicides,defoliant and even soil sterilant in agricultural history.And accidentally,it was found that potassium chlorate could induce the flowering of longan(Dimocxarpous longanna),which has made it being used pervasively to increase out-of-season longan production in recent years,especially in north Thailand and south China.Some research demonstrated that the strong oxidation of chlorate was obviously toxic to animals,plants and bacteria,and decomposition of chlorate in soil was completely a faster biochemical process,which affected greatly by soil microbes depending on climate and soil conditions.As a result,in view of the environmental problems that chlorate imposed,based on limited available data,this paper introduced physical and chemical characters of chlorate,summarized research advancement of chlorate ecotoxicity on several living organisms and human beings at home and abroad,approached the negative action of chlorate in soil and water,put forward some effective suggestions on protective measures when using chlorate in daily life.Moreover,further researches on monitoring methods and decomposition by bacteria were also prospected in order to minimize ecotoxicity of chlorate on ecosystem and human health.

Key words: Evolution, Specialization, Concept

CLC Number:

X503

LI Huashou, ZHANG Xiuyu, JING Chunxiao. Research advance in ecotoxicological effects of chlorates[J]. cje, 2005, (11): 1323-1328.

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