Analysis method based on chemical speciation characteristics of heavy metals in hydrofluctuation zone soil
A technology for chemical form and characteristic analysis, which is applied in chemical analysis, material analysis, material weighing, etc. by titration, which can solve the problems of entering water bodies polluting lakes and reservoirs, and soil heavy metal pollution in ebb and flow zones.
Active Publication Date: 2019-07-09
BEIJING NORMAL UNIVERSITY
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Problems solved by technology
In lake basins where the water level fluctuates significantly, the survey found that the water-fluctuation zone is generally polluted by soil heavy metals of varying degrees, and the heavy metals in the soil in the water-fluctuation zone have the risk of entering the water body and polluting the water quality of the lake and reservoir
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[0053] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0054] Such as figure 1 As shown, an embodiment of the present invention is based on a method for analyzing chemical form characteristics of heavy metals in hydrofluctuating zone soil, and the method for analyzing chemical form characteristics based on heavy metals in hydrofluctuating zone soil includes:
[0055] Step 101: Take field sampling of the water-fluctuating zone and measure the physical and chemical properties of the soil;
[0056] Step 102: Combined with the physical and chemical properties of the soil, add mercury solution to the soil sample to conduct adsorption kinetics test and isothermal adsorption experiment to obtain the adsorption characteristics of mercury by the soil in the hydrofluctuation zone;
[0057] Step 103: Combined with the...
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The invention provides a chemical morphological characteristics analysis method of soil heavy metals based on a water-level-fluctuating zone. The chemical morphological characteristics analysis methodof soil heavy metals based on the water-level-fluctuating zone comprises the following steps of: carrying out field sampling in the water-level-fluctuating zone and measuring physical and chemical properties of soil; according to the physical and chemical properties of the soil, adding a mercury solution to soil samples for adsorption kinetics and isothermal adsorption experiments, and obtainingthe adsorption characteristics of the soil in the water-level-fluctuating zone to mercury; adding the mercury solution to the soil samples for the adsorption kinetics and isothermal adsorption experiments by combining the physical and chemical properties of soil, and obtaining the adsorption characteristics of the soil in the water-level-fluctuating zone to hexavalent chromium.
Description
technical field [0001] The invention relates to the technical field of soil characteristic analysis, in particular to a chemical form characteristic analysis method based on hydrofluctuation zone soil heavy metals. Background technique [0002] In recent years, the water-fluctuation zone is a special area where the submerged land around the lake periodically rises and falls, and it is a transition zone controlled alternately by aquatic ecosystems and terrestrial ecosystems. During the dry period, pollutants produced along the coast of the water-fluctuating zone enter the water-fluctuating zone through surface runoff, and are partially intercepted by the adsorption of the soil; when the flooding period comes, the pollutants in the water body can also be eliminated due to deposition enriched in drop zone soil. The alternating wet and dry environment makes the soil in the hydrofluctuation zone have unique physical and chemical properties. Among various soil properties, the co...
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IPC IPC(8): G01N33/24G01N31/16G01N5/00
Inventor 王国强阿膺兰王溥泽刘廷玺杨楠彭岩波
Owner BEIJING NORMAL UNIVERSITY