Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Testing method of soil organic matter

A measurement method and organic matter technology, applied in chemical analysis by titration method, measurement device, preparation of test samples, etc., can solve the problems of small measurement results, damage to the tester, easy evaporation, etc., and reduce the damage caused by the measurement results The effect of the impact, the safety of the measurement process, and the accuracy of the experimental results

Inactive Publication Date: 2017-08-18
浙江华正检测有限公司
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this kind of operation has certain difficulties and risks, and on the other hand, it is easy to lead to the randomness of the experimental results.
Because the liquid in the test tube is heated by the temperature of the oil bath, and the temperature of the oil bath is heated by the resistance wire in the electric furnace, so if you are not careful, the liquid in the test tube will spray out due to poor temperature control. out
This will not only cause harm to the tester, but also cause the test result to be too small due to the liquid in the test tube being sprayed out.
And because glycerin will always be in a high temperature state during the whole heating process, it is relatively easy to evaporate, if the tester keeps close, the emitted glycerin vapor will also have an adverse effect on human health, and it will easily lead to occupational diseases after a long time happened

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Testing method of soil organic matter
  • Testing method of soil organic matter
  • Testing method of soil organic matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Determination of soil organic matter in the square in front of the South Railway Station of a certain city.

[0024] The soil in the 20cm-30cm soil layer below the surface was collected in the square in front of the station, and after being air-dried for 7-10 days, the soil samples were passed through a 0.25mm aperture sieve. Accurately weigh 0.3g of the air-dried sample that passed through a 0.25mm aperture sieve, put it into a hard test tube, then accurately add 10.00mL0.4mol / L potassium dichromate-sulfuric acid solution, shake well and insert a glass funnel into the test tube mouth . Insert the test tube into the heat-collecting constant temperature magnetic stirring reaction bath pot of HWCL-3 produced by Zhengzhou Great Wall Technology Industry and Trade Co., Ltd. After the power is turned on, when the temperature of the oil bath rises to 185°C, immediately cut off the power and stop the oil bath At this time, put the sample again, the liquid level in the sample t...

Embodiment 2

[0030] Determination of soil organic matter in a certain urban area of ​​a certain city

[0031] The soil in the 20cm-30cm soil layer below the surface was collected at this place, and after being air-dried for 7-10 days, the soil samples were passed through a 0.25mm aperture sieve. Accurately weigh 0.5g of the air-dried sample that passed through a 0.25mm aperture sieve, put it into a hard test tube, then accurately add 10.00mL0.4mol / L potassium dichromate-sulfuric acid solution, shake well and insert a glass funnel into the test tube mouth . Insert the test tube into the heat-collecting constant temperature magnetic stirring reaction bath pot of HWCL-3 produced by Zhengzhou Great Wall Technology Industry and Trade Co., Ltd. After the power is turned on, when the temperature of the oil bath rises to 185°C, immediately cut off the power and stop the oil bath At this time, put the sample again, the liquid level in the sample tube can still be lower than the oil level, and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a testing method of a soil organic matter, and belongs to the technical field of a soil component testing method. The method includes steps of under the condition of heating by an oil bath spot, oxidizing soil organic carbon by excessive potassium dichromate- sulfuric acid solution, and performing titration on the rest potassium dichromate by ferrous sulfate standard solution; calculating organic carbon amount of the consumed potassium dichromate amount according to an oxidization correction coefficient, and then multiplying by a constant 1.724, namely, content of the soil organic matter. The testing method is characterized in that the oil bath spot is a heat-collecting type constant temperature magnetic stirring reaction oil bath spot; when the temperature of the oil bath spot is risen to 185 DEG C, the power source is immediately cut off, the heating of the oil bath spot is stopped; the whole heating process can be completed by means of afterheat of the oil bath. Fluid in a test tube cannot spray, so that the parallelism of testing data is very good, the testing result is more exact; moreover, the whole testing process is safe, easy, energy-saving, high-efficient, and worthy of popularizing.

Description

technical field [0001] The invention belongs to the technical field of methods for measuring soil components, and in particular relates to a method for measuring soil organic matter. Background technique [0002] The determination of soil organic matter below 15% must be carried out in accordance with the NY / T 1121.6-2006 standard issued by the Ministry of Agriculture of the People's Republic of China on July 10, 2006 and implemented on October 1, 2006. However, the heating method has the following disadvantages: During the heating process, the temperature of the electric furnace must be controlled so that the solution does not boil violently, and the iron cage should be lifted and shaken several times in the oil bath to make the liquid temperature uniform. On the one hand, this kind of operation has certain difficulties and risks, and on the other hand, it is easy to lead to the randomness of the experimental results. Because the liquid in the test tube is heated by the te...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/78G01N31/16G01N1/44
CPCG01N21/78G01N1/44G01N31/16G01N2021/786
Inventor 郑胜张钰铭陈建萍叶春华
Owner 浙江华正检测有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com