黄河有机污染物挥发特性研究

针对黄河多泥沙和有机物污染状况,研究清水和含沙量为1g/L、3g/L的混水中萘和2,6-二叔丁基对甲酚(BHT)两类有机污染物的挥发过程及规律,用气相色谱仪测定挥发过程溶液质量浓度的变化,实验数据用数学模型进行曲线拟合,得到挥发动力学方程、挥发速率常数和半衰期。分析有机物的物化性质、风速和泥沙含量等环境因素对挥发速率的影响,为确定黄河对有机污染物的承纳水平和总量控制提供依据。

Study on volatilization characteristics of organic pollutants in Yellow River

Based on the condition of much sediments and organic contamination in Yellow River,the volatilization processes of naphthalene and BHT in pure water and sandy water containing 1?g/L and 3?g/L sediment were studied.The solution concentration during the volatilization process was measured by gas chromatograph.The experimental data were fitted to curve equation by mathematical model, and the volatilization dynamics equation,speed constant and half life were obtained.The influence of the physical and chemical characters of organic contaminants,wind speed and sediment concentration on the volatilization process was discussed.The self-purification law of volatilization provides a basis for determining the capacity of contaminants and gross control.