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Prediction method of soil cadmium-nickel compounded wheat enrichment amount

A prediction method and enrichment technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of no prediction method, no research on the interaction of composite heavy metals, etc., and achieve the effect of good prediction effect.

Active Publication Date: 2019-08-02
NANJING UNIV
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Problems solved by technology

However, these inventions only studied a single metal, or used the bioaccumulation of heavy metals as an indicator, and did not study the interaction of complex heavy metals and there is no clear prediction method

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  • Prediction method of soil cadmium-nickel compounded wheat enrichment amount
  • Prediction method of soil cadmium-nickel compounded wheat enrichment amount
  • Prediction method of soil cadmium-nickel compounded wheat enrichment amount

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with specific embodiments, so as to better reflect the advantages of the present invention.

[0036] A method for predicting the wheat enrichment of soil cadmium-nickel compound (Cd-Ni), comprising the following steps:

[0037] (1) Sand stone enrichment experiment:

[0038] Firstly, the compound enrichment experiment of Cd-Ni was carried out by using the laboratory sand pot experiment. Wheat was used as the test organism, and the wheat seeds with better and consistent germination conditions were selected to carry out the enrichment experiment for a certain period of time. The experiment adopts the control variable method, that is, the concentration of the basic cations (K+, Na+, Ca2+, Mg2+) in the sand culture solution is controlled to be constant, and only the Cd 2+ and Ni 2+ concentration.

[0039] (2) Determine the Cd-Ni composite enrichment equation:

[0040] After the experiment, caref...

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Abstract

The invention discloses a prediction method of soil cadmium-nickel compounded wheat enrichment amount, and belongs to the field of ecological heavy metal toxicity assessment. According to the method,the interaction of cadmium and nickel ions in the wheat enrichment process is considered, the enrichment amount of heavy metals in roots and stems and leaves is predicted by adopting a multiple regression method, firstly, a cadmium-nickel ion composite enrichment equation is obtained by adopting a sand culture experiment, and then the biological enrichment amount of the composite heavy metals in different soils is predicted by combining with the metal concentration in actual soil pore water. The method is also suitable for predicting the biological enrichment amount of Cd-Ni recombination on heavy metals of other crops, and a new method is provided for ecological risk assessment of soil heavy metals and regional soil pollution treatment.

Description

technical field [0001] The invention relates to the technical field of ecological heavy metal toxicity assessment, in particular to a method for predicting soil cadmium-nickel compounded wheat enrichment. Background technique [0002] According to the 2014 soil environmental quality survey report, cadmium and nickel are the two most serious heavy metal pollutants in my country. In addition, the widespread use of nickel-cadmium batteries has caused serious cadmium-nickel compound pollution in some farmland soil. Cadmium-nickel in the environment has high mobility, and is easily absorbed and utilized by plants and enters the food chain, causing toxic effects on animals and plants. As one of the three major grains in the world, wheat is widely planted around the world. Therefore, effective evaluation of the accumulation of heavy metals in wheat under the combined pollution of cadmium and nickel can comprehensively and effectively evaluate and prevent heavy metal pollution in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 顾雪元朱泊静
Owner NANJING UNIV
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