大庆地区城市污泥中重金属元素含量水平调查与分析  

Survey and Analysis of Heavy Metal Element Level of the Sludge in Daqing Municipal Area

作　　者：徐昌[1] 李钟玮[1] 

机构地区：[1]黑龙江省大庆市环境监测中心站,黑龙江大庆163316

出　　处：《中国无机分析化学》2013年第3期33-36,共4页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：采用原子吸收光谱法和原子荧光光谱法测定了大庆市四座生活污水处理厂污泥中重金属元素含量，平行测定的相对标准偏差在1．6％～4．6％，加标回收率在93．6％～102．1％，表明方法的精密度和准确度都较好，四个污水处理厂污泥中重金属总量大小依次为Zn〉Cu〉cr〉Pb〉Ni〉Cd，锌的含量高可能与城市排水管道大多采用镀锌材料以及锌的理化性质有关。将其含量水平与标准比较发现：大庆城市污泥中重金属含量水平不高，完全符合《农用污泥中污染物控制标准》的重金属标准，为城市污泥处理、处置和环境管理提供可靠的数据支持。The contents of the heavy metal elements of the sludge in the four sewage treatment plants in Daqing city were analyzed by atomic adsorption spectrometry methods. The relative standard deviations were in the range of 1.6 % to 4.6%, and the standard addition recoveries were in the range of 93.6 % to 102.1%, The results indicate that the precision and accuracy of the method are relatively good. The total content of the heavy metal elements in the sludge taken from the four sewage treatment plants increased as in the order as Zn〉Cu）Cr〉Pb〉Ni〉Cd. The reason for the higher level of zinc may be due to the fact that most of the city drains are made of galvanized material and also due to the physical and chemical properties of Zn. Comparing the levels of the heavy metal contents of the sludge in Daqing city with that of the standards, it was found that the sludge metal content level in Daqing city is not higher than that of the standard, but is in full compliance with the standard of heavy metals in sludge published in the ＂Pollutant control standard for the agricultural sludge＂. These results provided a reliable data support for municipal sludge treatment, disposal and environmental management.

关 键 词：大庆 城市污泥 重金属 含量水平 

分 类 号：O657.31[理学—分析化学] TH744.125[理学—化学]