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Fast detection method for cation exchange capacity

A fast technology for cation exchange capacity, which is applied in the field of rapid determination of cation exchange capacity, can solve the problems of sample loss, time-consuming, deviation of measurement results, etc., and achieve the effect of improving efficiency and avoiding the cumbersome manual weighing

Active Publication Date: 2016-01-06
中国国检测试控股集团青岛京诚有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

It makes the pre-processing operation process of the verification process complicated and time-consuming; and the repeated manual processing process can easily cause the loss of samples and make the measurement results deviate

Method used

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  • Fast detection method for cation exchange capacity
  • Fast detection method for cation exchange capacity
  • Fast detection method for cation exchange capacity

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Experimental program
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Embodiment Construction

[0025] The present invention will be further described below in combination with specific embodiments.

[0026] A rapid testing method for cation exchange capacity, comprising:

[0027] (13) Sample treatment, select 6-10 kilograms of soil samples, send them into a tumble dryer, blow into 50-60 ° C hot air tumble and dry for 4-10 hours, until the water content of the soil samples is less than 5%;

[0028] (14) The above-mentioned dried soil sample is sent into a sieve mill for crushing and screening for 15-20 minutes. The sieve grinder comprises a cylindrical shell 1, a sieve machine unit 2 and a mill unit 3. The described The sieve machine unit 2 is located in the shell 1, including a stainless steel mesh 4, the two sides of the stainless steel mesh 4 are fixed and sealed by the end cap 5, the first rotating shaft 6 passes through the stainless steel mesh and is respectively connected with the end caps 5 on both sides, the first rotation The shaft 6 is connected to the first ...

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Abstract

The invention discloses a fast detection method for cation exchange capacity. A soil sample is selected, turned over, dried, conveyed into a grinding and screening machine to be crushed and screened, then dried in air naturally and pressed into a block to form a sample block, the sample block is filtered after being soaked in an ammonium chloride solution and centrifuged, and filter liquor is calibrated. By means of drying treatment, water in the soil sample is removed fast, crushing and screening can be achieved fast, crushing and screening integration of the grinding and screening machine is achieved, efficiency is improved, by means of block pressing treatment, batch detection of the sample can be achieved, and tedious manual weighing is avoided.

Description

technical field [0001] The invention belongs to the field of chemical testing, in particular to a rapid testing method for cation exchange capacity. Background technique [0002] The soil colloid has a large specific surface area and strong chargeability, so the soil has adsorption properties. In the diffusion layer of the soil colloidal double layer, the compensation ions can exchange equivalently with the ions of the same charge in the solution based on the ion valence, which is called ion exchange. Soil cation exchange capacity (cation exchange capacity or CEC) refers to the total amount of various cations that the soil colloid can absorb, and its value is expressed by the amount of substances containing various cations per kilogram of soil, that is, mol / kg. Soil cation exchange capacity affects the level of soil buffering capacity, and is also an important basis for evaluating soil fertility, improving soil and rational fertilization. Therefore, it is very important to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16G01N1/28G01N1/44
Inventor 栾建文薛旭刘杰时玉萍陈春锐王秀娟
Owner 中国国检测试控股集团青岛京诚有限公司
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