Method for evaluating content of heavy metal in vegetables based on soil conditions of production place

A heavy metal and soil technology, used in measuring devices, soil material testing, food testing, etc., to avoid heavy workload and low work efficiency

Inactive Publication Date: 2016-06-08
ZHEJIANG UNIV +1
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  • Claims
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Problems solved by technology

[0008] The existing soil heavy metal safety standards cannot specifically reflect how vegetables grown in the soil will enrich heavy metals, and the properties of the soil cannot intuitively explain its possible impact on vegetables

Method used

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  • Method for evaluating content of heavy metal in vegetables based on soil conditions of production place
  • Method for evaluating content of heavy metal in vegetables based on soil conditions of production place
  • Method for evaluating content of heavy metal in vegetables based on soil conditions of production place

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Embodiment Construction

[0031] (1) Establishment of relational model:

[0032] The radish, lettuce, leafy vegetables, cauliflower and tomato were planted in a group of soils respectively. The relevant parameters of each soil were known, and the relevant parameters included: soil heavy metal content, soil pH, soil electrical conductivity, soil cation exchange capacity, soil organic matter Content, soil weak acid extractable heavy metal content.

[0033] After the vegetables were ripe and picked, the heavy metal content in each vegetable was detected, and Matlab software was used to conduct multivariate parameter regression analysis between the heavy metal content in each vegetable and the relevant parameters of the corresponding soil in the place of production, and a relationship model was obtained.

[0034] The relational model is:

[0035] LogM=a+b.logMsoil+c.pH+d.EC+e.CEC+f.OM+g.logMextra;

[0036] Among them, M is the heavy metal content in vegetables, Msoil is the heavy metal content in soil, p...

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Abstract

The invention discloses a method for evaluating the content of heavy metal in vegetables based on soil conditions of a production place. The method comprises the following steps: (1) planting the vegetables into one group of soil with relative known parameters, and detecting the content of the heavy metal in the vegetables after the vegetables are picked; (2) establishing a relation model between the relative parameters and the content of the heavy metal in the vegetables; (3) detecting relative parameters of soil of the production place of the vegetables to be detected, and evaluating the content of the heavy metal in the vegetables to be detected according to the relation model. By establishing the relation model between the relative parameters of the soil of the production place and the content of the heavy metal in the vegetables, detecting the relative parameters of the soil of the production place of the vegetables to be detected, and substituting the relative parameters into the model, the content of the heavy metal of all the vegetables produced by the production place can be evaluated; the content of the heavy metal in the vegetables is not required to be directly detected, and conditions that the working amount of directly detecting the content of the heavy metal in the vegetables is heavy and the working efficiency is low are avoided.

Description

technical field [0001] The invention relates to the detection of heavy metal content in vegetables, in particular to a method for estimating the heavy metal content in vegetables based on the soil conditions of the producing area. Background technique [0002] The original meaning of heavy metals refers to metals with a specific gravity greater than 5, including gold, silver, copper, iron, lead, etc. In terms of environmental pollution, heavy metals mainly refer to eight types of heavy elements with significant biological toxicity, such as arsenic, cadmium, chromium, copper, nickel, lead, mercury, and zinc. Heavy metals cannot be biodegraded, on the contrary, they can be enriched by hundreds of times under the biomagnification of the food chain, and finally enter the human body. Heavy metals can strongly interact with proteins and enzymes in the human body, making them inactive, and may also accumulate in certain organs of the human body, causing chronic poisoning. [0003...

Claims

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Application Information

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IPC IPC(8): G01N33/02G01N33/24
CPCG01N33/025G01N33/24
Inventor 周杰鲍骁喻景权徐明星殷汉琴
Owner ZHEJIANG UNIV
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