Characteristics of Heavy Metals and Their Evaluation in Sediments from Middle and Lower Reaches of the Huaihe River

摘要: Abstract We have collected 18 samples corresponding to locations in the middle and lower reaches of Huaihe River. The sediment were tested for their pH level, percentage solids, organic matter five heavy metals (Cr, Cu, Zn, Cd Pb). average concentrations Cr, Pb sampling respectively 56.1, 22.2, 70.0, 0.17 20.4 μg/g. Compared with background values, Zn Cu from River slightly higher, while Cr lower. concentration all was higher than its value, about twice amount value. that Yangtze A correlation analysis revealed similar geochemical feautures. geo-accumulation index ( I geo ) used evaluate degree pollution sediments. reveals are largely ranked zero no medium pollution.