长江武汉段底质中重金属累积规律及环境容量的初步探讨

长江武汉段底质中重金属累积规律及环境容量的初步探讨 PRELIMINARY APPROCH TO THE ACCUMULATION LAW AND ENVIROMENTAL CAPACITY OF THE HEAVY METAL IN THE BOTTOM MUD OF THE YANGTZE RIVER IN WUHAN SECTION 李生伋 1 2 3 4 first-author 王华东 1 2 3 4 曾连茂 1 2 3 4 武汉大学环境法研究所 武汉大学环境法研究所 北京师范大学环境科学研究所 北京师范大学环境科学研究所 华中师范大学地理系 华中师范大学地理系 武汉大学环境法研究所北京师范大学环境科学研究所华中师范大学地理系 武汉大学环境法研究所北京师范大学环境科学研究所华中师范大学地理系 本文主要研究长江武汉段武昌徐家棚——汉口滨江公园河床底质（以下简弥为"长江武汉段底质"）中重金属的累积规律。研究表明,底质中重金属的含量与底质的机械组成具有反相关关系,其中Cd和As的含量与底质的机械组成相关性最好,Cu次之, Pb最差,并发现底质中重金属累积量有明显的垂直变化。研究还表明,长江武汉段底质中Cd的含量是武汉市近效土壤背景值的3.3—4倍,Cu是1.2—1.7倍,Pb和As的含量与土壤背景值相接近。因此,重金属对长江武汉段局部水体有较严重的影响,其污染问题应引起我们的重视。本文还对重金属水环境容量问题进行了尝试性的探讨。 This paper is mainly about the law of accumulation of the heavy metal in the riverbed bottom mud of the Yangtze River in Wuhan Section near Xujiapeng of Wuchang and Riverside Park of Hankou（Simpty called athe Bottom Mud of the Yangtze River in Wuhan section"）. Research shows that the content of the heavy metal in the battom mud is conversely related to the mechanical composition of the bottom mud and that the content of Cd and As are interrelated best With the mechanical composition of the bottom mud: and then, Cu; and Pb is the worst. It is also discovered that the guantity of accumulation of the heavy metal in the bottom mud is obviously changing vertically. Furthermore, research shows that the content of Cd in the bottom mud of Yangtze River in Wuhan section is 3.5—4 times that of the background value of the soil in the suburbs of Wuhan; the content of Cu, 1.2—1.7 times; the content of Pb and As is almost equal to the background value of the soil. Therefore, the heavy metal has more serious effect on the water body of the Yangtze River in Wuhan section. The problem of pollution must be taken into account. The present article has also made an initial attempt to deal With the problem of the water environmental capacity of the heavy metal 1986-01-01 2021-04-01 1