Dynamic And Distribution Characteristics Of Mercury Of Dahuofang Reservoir Research

Mercury distribution in the reservoir environment is an important issue,to understand the mercury distribution present situation and the environmental risk of dahuofang reservoir,the choice of 10 sampling points,collected 30 soil samples and water samples of 20,30 samples of air,analysis of different areas of total mercury in soil,water and air content and distribution,and the accumulation exponential method and comparison of potential ecological risk index method to explore the soil total mercury distribution status and environmental risks,analyze the biological availability and potential risks,and to explore the atmospheric mercury's relationship with the soil mercury enrichment.The results showed that the average content of mercury in the soil of Dahuofang reservoir were 27.76 ?g/kg,the variation coefficient is 69.32,the maximum value of 82.47 ? g/kg,the minimum value of 12.49?g/kg;To collect the average content of mercury in the water of Dahuofang reservoir were 19.8707 ?g/kg,the variation coefficient is 71.35,the maximum of 53.82 ?g/kg,the minimum 2.92?g/kg.River basin from the spatial distribution of mercury indicated that club mercury distribution is low,hun river sediment suzihe watershed in mercury content is higher,low content of mercury in water.Accumulation index of soil mercury distribution evaluation and potential ecological risk assessment in ecological hazard index of soil mercury,two kinds of evaluation results show that the distribution level and the ecological risk of Dahuofang reservoir are low.Atmospheric mercury distribution contribution to soil mercury enrichment is bigger.