水环境中铬的存在形态及迁移转化规律  

The Existing Form,Migration and Transformation Laws of Cr in Water Environment

作　　者：赵堃[1] 柴立元[1] 王云燕[1] 邓荣[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《工业安全与环保》2006年第8期1-3,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(20477459);教育部高等学校博士学科点专项科研基金(20040533048)。

摘　　要：综合评述了水环境中铬的存在形态、污染特征及其迁移转化规律的研究现状。水体中铬主要是三价和六价,存在形态分为溶解态、离子交换态、有机结合态、无机沉淀态、残留态,迁移转化过程主要是水解、沉淀、络合、吸附和氧化还原等。对铬在水体中迁移和转化过程的动力学模型进行了论述。Research status of the existing forms, pollution characteristics, migration and transformation laws of chromium in the water environment are summarized in this paper. Trivalent and hexavalent chromium are mainly found in water body. The existing forms include soluble chromium species, ion- exchangeable chromium species, organic - bound chromium species, inorganic - precipitated chromium species and residual state. The migration and transformation processes mainly contain hydrolysis, precipitation, complexion, absorption, redox reaction, and so on. The dynamic mathematical model of migration and transformation law of chromium in the water environment is also briefly discussed.

关 键 词：铬 存在形态 迁移转化 动力学模型 

分 类 号：X131.2[环境科学与工程—环境科学]