CN109290362A - A kind of method of quick reduction soil full cadmium and effective cadmium content - Google Patents
A kind of method of quick reduction soil full cadmium and effective cadmium content Download PDFInfo
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- CN109290362A CN109290362A CN201811339393.3A CN201811339393A CN109290362A CN 109290362 A CN109290362 A CN 109290362A CN 201811339393 A CN201811339393 A CN 201811339393A CN 109290362 A CN109290362 A CN 109290362A
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- cadmium
- soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Abstract
The invention discloses a kind of methods for quickly reducing soil full cadmium and effective cadmium content, comprising the following steps: step 1: acquiring different types of soil from cadmium pollution rice field, is tested；Step 2: " good farmland is precious " of the production of " Ge Linmei " company is selected to carry out ratio application；Step 3: " good farmland is precious " plus water stir evenly with acquisition soil, then drain water；Step 4: full cadmium and effective cadmium content cadmium content are measured with ICP-MS, carries out data process&analysis with EXCEL and SAS；Step 5: interpretation of result.The present invention can be reduced quickly and remove the cadmium in paddy soil, as long as whole or so 1 week of processing time, effectively reduces and remove the cadmium in paddy soil, reduction amplitude can reach 40%, fundamentally, cadmium pollution, the directly cadmium in reduction soil are solved the problems, such as on source.
Description
Technical field
The present invention relates to agricultural plantation technology fields, contain more particularly to a kind of quickly reduction full cadmium of soil with effective cadmium
The method of amount.
Background technique
In recent years, China's paddy soil was on the rise with rice content of beary metal excessive problem, and wherein cadmium Cd is harm
One of maximum several Heavy Metallic Elements of property, and be listed in first of five big poisonous substances (cadmium Cd, mercury Hg, arsenic As, chromium Cr, lead Pb).Rice
Field heavy metal pollution causes paddy growth to be obstructed, the paddy underproduction, and can jeopardize water environment by runoff and elution, more serious
It is that heavy metal is largely accumulated in paddy, the life and health with approach such as enrichments to the mankind and animal is transmitted by food chain
It constitutes a serious threat.Cadmium element is the hypertoxic element that a kind of bioconcentration is strong, toxicity is lasting, has " three cause " effect, intake
It is excessive, organism is endangered extremely serious.Nonessential element of the cadmium as plant not only inhibits the growth and development of plant, makes it
Growth retardation, plant are short and small, and even death occurs for leaf chlorosis, but also will affect yield.For the health of the mankind,
How cadmium content in rice is reduced, and the rice of edible safety is that we must be also required to the significant problem solved in time.Together
High yield, high-quality, efficiently the same, environmental protection, the safe important content and target for having become arable farming.
Currently, for having been subjected to the soil of heavy metal pollution, industrial crops cannot replanted to guarantee staple food supply
Under the conditions of, most effective measure is exactly the validity for regulating and controlling soil Cd by various agronomic technique measures and cadmium in rice plant
Intracorporal mobility, to reduce accumulation of the rice plant to the absorption of cadmium and in paddy.But it cannot fundamentally reduce soil
Cadmium in earth.Also there is the method transfer using physics, chemistry and biology, absorb, the pollutant in degradation and conversion soil, make
Its concentration is reduced to acceptable level, or converts poisonous and hazardous pollutant to harmless substance.But exists and striven with rice
Ground and period very long problem.
For the features of pollution of the current soil in China, i.e., the Treatment process measure of emergency to also be reduced a meter cadmium and be contained
Amount, also wants the rapid technology that soil cadmium content can be effectively reduced, and this technology at home and abroad still belongs to blank.
Summary of the invention
The object of the invention is that providing a kind of quickly the reduction full cadmium of soil and effective cadmium to solve the above-mentioned problems
The method of content.
The present invention through the following technical solutions to achieve the above objectives:
A kind of method of quick reduction soil full cadmium and effective cadmium content, comprising the following steps:
Step 1: soil collection: different types of soil is acquired from cadmium pollution rice field, carries out pot experiment；
Step 2: addition removes cadmium agent: " good farmland is precious " of the production of " Ge Linmei " company being selected to carry out ratio application；
Step 3: stirring, draining: " good farmland is precious " plus water stir evenly with acquisition soil, then drain water；
Step 4: full cadmium and effective cadmium content are measured: measures cadmium content with ICP-MS, carries out data with EXCEL and SAS
Processing and analysis；
Step 5: interpretation of result: being obtained using method of comparison, and with the increase of amount of application, reduction amplitude becomes in what is increased
Identical trend is presented in gesture, full cadmium and effective cadmium.
Further, every basin soil collection amount is 20kg in the step 1, acquires 5 basins.
Further, amount of water is 15kg in the step 3,24H is stood after stirring evenly, the step 3 repeats 3
It is secondary.
Further, the step 3 applies the content of cadmium in solid carbon dioxide post analysis detection soil side by side each time.
Further, to draining and focus on after being stirred in the step 3, in order to avoid cause the secondary pollution of cadmium.
Advantages of the present invention is as follows:
1, it quickly reduces and removes the cadmium in paddy soil, as long as whole or so 1 week of processing time；
2, it effectively reduces and removes the cadmium in paddy soil, reduction amplitude can reach 40%；
3, fundamentally, solve the problems, such as cadmium pollution on source, the direct cadmium in reduction soil.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but the invention is not limited to these to implement
Example.
Embodiment 1
A kind of method of quick reduction soil full cadmium and effective cadmium content, its step are as follows:
Step 1: soil collection: different types of soil is acquired from cadmium pollution rice field, carries out pot experiment, every basin soil
Collection capacity is 20kg, acquires 5 basins, and soil faces from good fortune, Liuyang, Xiangyin collect, wherein from the soil that good fortune faces acquisition be plate page
Rock and granite are developed, and paddy soil is in sand, and retain water and nutrients ability is poor, and the viscosity of the soil acquired from Liuyang
It is relatively strong, there is good retain water and nutrients ability, the soil in Xiangyin is placed in the middle；
Step 2: addition removes cadmium agent: " good farmland is precious " of the production of " Ge Linmei " company being selected to carry out ratio application；
Step 3: stirring, draining: " good farmland is precious " 15kg stands 24H after stirring evenly with acquisition soil, then drain water, repeats
It is stirred, drains 3 times, apply the content of cadmium in solid carbon dioxide post analysis detection soil side by side each time；
Step 4: full cadmium and effective cadmium content are measured: measures cadmium content with ICP-MS, carries out data with EXCEL and SAS
Processing and analysis；
Step 5: interpretation of result: being obtained using method of comparison, and with the increase of amount of application, reduction amplitude becomes in what is increased
Identical trend is presented in gesture, full cadmium and effective cadmium.
It is as follows that data acquisition is wherein carried out using " good farmland is precious " that same soil carries out different administration amount:
Influence of the 1 different administration amount of table to soil cadmium content
As can be drawn from Table 1, " good farmland precious " for applying different amounts can reduce full cadmium and effective cadmium in paddy soil
Content reduces amplitude in the trend increased, trend identical with full cadmium is presented in effective cadmium with the increase of amount of application.As often
Mu application 225Kg " good farmland is precious ", the full cadmium content and effective cadmium content of soil only have 0.507mg/kg and 0.209mg/ respectively
Kg reduces 30.1% and 38.0% than T1 (CK) respectively.
It is as follows that data acquisition is wherein carried out using " good farmland is precious " that different soils carries out different administration amount:
Influence of the table 2 " good farmland is precious " to soil cadmium content
As can be drawn from Table 2, under conditions of application " good farmland precious " 90kg per acre, 3 places such as good fortune faces, Xiangyin, Liuyang
Paddy soil in full cadmium content reduce 24.1%, 17.8%, 18.3% respectively, effective cadmium reduces 23.5% respectively,
35.3% and 25.4%, and under conditions of application " good farmland precious " 180kg per acre, 3 local rice such as good fortune faces, Xiangyin, Liuyang
Full cadmium content reduces 20.7%, 15.1%, 41.2% respectively in the soil of field, and effective cadmium reduces 29.4%, 41.2% respectively
With 50.7%, the reduction amplitude between different types of soil is larger, on the whole, most with the reduction amplitude of the soil of Liuyang
Greatly, Xiangyin is taken second place, and good fortune is faced smaller, is illustrated, application " good farmland is precious " in cadmium pollution rice field has the cadmium in soil preferable
Removal effect, the full cadmium content of soil averagely reduces 25.6%, and the effective cadmium of soil averagely reduces 40.4%, and soil is effective
The reduction amplitude of cadmium is higher than the full cadmium of soil.
It wherein uses and the removal ability of cadmium in paddy soil is surveyed after being added to the active constituent of cadmium in " good farmland is precious "
Fixed, data are as follows:
Influence of 3 modified form of table " good farmland is precious " to soil cadmium content
It is after application the results show that under conditions of applying modified form " good farmland precious " 180kg per acre, good fortune faces, Xiangyin, clear
Full cadmium content reduces 41.4%, 28.8%, 34.9% respectively in 3 local paddy soils such as sun, and effective cadmium reduces respectively
47.1%, 44.1% and 49.3% (table 3).It is in the trend increased that good fortune, which is faced with the reduction amplitude in Xiangyin, and the reduction width of Liuyang
Degree but reduces several percentage points.The full cadmium content of soil averagely reduces 35.2%, and effective cadmium averagely reduces 46.8%,
Respectively than increasing 9.6 and 6.4 percentage points before improvement, it is seen then that " good farmland is precious " after improvement removes energy to the cadmium of paddy soil
Power is enhanced.
Test result shows application " good farmland is precious " in heavy metal cadmium rice field, can rapidly and effectively reduce cadmium
Content reduces amplitude up to 40%, this has very important application value to the improvement of In Cadmium Polluted Area, while because of paddy soils
Cadmium in earth forms ionic state soluble easily in water with after " good farmland is precious " effect, and is discharged with water body, therefore when crop field is applied
It waits, the draining in rice field should be handled, collect the cadmium in recycle-water, in order to avoid cause secondary pollution.
Embodiment described above only expresses embodiments of the present invention, and the description thereof is more specific and detailed, but can not be because
This and be interpreted as the limitation of the invention patent range.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (5)
1. a kind of method for quickly reducing soil full cadmium and effective cadmium content, it is characterised in that: the following steps are included:
Step 1: soil collection: different types of soil is acquired from cadmium pollution rice field, carries out pot experiment；
Step 2: addition removes cadmium agent: " good farmland is precious " of the production of " Ge Linmei " company being selected to carry out ratio application；
Step 3: stirring, draining: " good farmland is precious " plus water stir evenly with acquisition soil, then drain water；
Step 4: full cadmium and effective cadmium content are measured: measures cadmium content with ICP-MS, carries out data processing with EXCEL and SAS
With analysis；
Step 5: interpretation of result: being obtained using method of comparison, with the increase of amount of application, reduces amplitude in the trend increased, Quan Ge
Identical trend is presented with effective cadmium.
2. a kind of method for quickly reducing soil full cadmium and effective cadmium content according to claim 1, it is characterised in that: institute
Stating every basin soil collection amount in step 1 is 20kg, acquires 5 basins.
3. a kind of method for quickly reducing soil full cadmium and effective cadmium content according to claim 1, it is characterised in that: institute
Stating amount of water in step 3 is 15kg, 24H is stood after stirring evenly, the step 3 repeats 3 times.
4. a kind of method for quickly reducing soil full cadmium and effective cadmium content according to claim 1, it is characterised in that: institute
State the content that step 3 applies cadmium in solid carbon dioxide post analysis detection soil side by side each time.
5. a kind of method for quickly reducing soil full cadmium and effective cadmium content according to claim 1, it is characterised in that: right
It drains and is focused on after being stirred in the step 3, in order to avoid cause the secondary pollution of cadmium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811339393.3A CN109290362A (en) | 2018-11-12 | 2018-11-12 | A kind of method of quick reduction soil full cadmium and effective cadmium content |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811339393.3A CN109290362A (en) | 2018-11-12 | 2018-11-12 | A kind of method of quick reduction soil full cadmium and effective cadmium content |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823922A (en) * | 2010-04-19 | 2010-09-08 | 中国热带农业科学院分析测试中心 | Soil improvement nutrient solution for reducing heavy metal cadmium content of vegetables |
| CN103433275A (en) * | 2013-08-23 | 2013-12-11 | 四川农业大学 | Fulvic acid-potassium chloride combined eluant, and preparation method and application thereof |
| CN106190169A (en) * | 2016-09-22 | 2016-12-07 | 北京新源环境有限公司 | A kind of eluent for Compound Heavy Metals soil remediation |
| CN107057710A (en) * | 2017-03-15 | 2017-08-18 | 中国科学院烟台海岸带研究所 | A kind of heavy metal-polluted soil eluent, preparation method, application method and method for treating waste liquid |
| JP2018075502A (en) * | 2016-11-07 | 2018-05-17 | 芳信 林 | Treatment method for effectively utilizing land contaminated with harmful organic matter and metal |
-
2018
- 2018-11-12 CN CN201811339393.3A patent/CN109290362A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823922A (en) * | 2010-04-19 | 2010-09-08 | 中国热带农业科学院分析测试中心 | Soil improvement nutrient solution for reducing heavy metal cadmium content of vegetables |
| CN103433275A (en) * | 2013-08-23 | 2013-12-11 | 四川农业大学 | Fulvic acid-potassium chloride combined eluant, and preparation method and application thereof |
| CN106190169A (en) * | 2016-09-22 | 2016-12-07 | 北京新源环境有限公司 | A kind of eluent for Compound Heavy Metals soil remediation |
| JP2018075502A (en) * | 2016-11-07 | 2018-05-17 | 芳信 林 | Treatment method for effectively utilizing land contaminated with harmful organic matter and metal |
| CN107057710A (en) * | 2017-03-15 | 2017-08-18 | 中国科学院烟台海岸带研究所 | A kind of heavy metal-polluted soil eluent, preparation method, application method and method for treating waste liquid |
Non-Patent Citations (1)
| Title |
|---|
| 柏宏成: "低分子有机酸、腐殖酸对土壤镉污染淋洗修复研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Application publication date: 20190201 |