A device for measuring the flux of atmospheric deposition heavy metals using sediment

Abstract

The invention provides a device for measuring the flux of heavy metals deposited by atmosphere by utilizing deposits. The device comprises a seawater storage device, a water pump and a plurality of deposition columns arranged linearly, wherein the seawater storage device is used for placing seawater; the deposition columns are vertically arranged; the upper ends of the deposition columns are opened, and the lower ends of the deposition columns are connected with detachable bottom cover for blockage; each deposition column is internally provided with a deposition phase, a seawater phase and anair phase from bottom to top in sequence; the seawater phases of the deposition columns are communicated in sequence; the deposition columns arranged at the first position and the deposition column atthe final position are respectively communicated with the seawater storage device; the water pump drives circulation of water flow. The device provided by the invention has the beneficial effects that the change of the background values and deposition types of heavy metals and the disturbance of human activities can be effectively discarded, and the measurement result can reflect the heavy metalsstored monthly in the deposit sediments and from atmosphere deposition intuitively.

Description

technical field [0001] The invention relates to the field of environment, in particular to a device for measuring the flux of heavy metals in atmospheric deposition by using sediment. Background technique [0002] With economic development and social progress, air pollution has become the most important environmental problem in China. The main threat of air pollution to ecology and human health comes from exposure to chemical pollution in the atmosphere. Among the various pollutions of air pollution, heavy metals are the most important species because they are bioaccumulative and harmful to the circulatory system and nervous system of the living body. cause irreversible damage. [0003] In the north, the changes in the flux of heavy metals in the atmosphere caused by coal-fired heating have recently attracted special attention. The content of heavy metals that sink into the ocean every year and are further preserved in sediments is as high as several tons. However, the dep...

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Problems solved by technology

However, the determination of the background value of heavy metal deposition is not accurate, and the change of sediment deposition type is not considered, and the disturbance of human activities is not completely excluded. The above research may make the determination value too high

[0005] In addition, it is also possible to directly measure the flux of heavy metals in the atmosphere with instruments, but it does not consider the driving effect of atmospheric flow on heavy metals, and cannot directly determine the flux of heavy metals in local or ocean sedimentation

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