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Test paper for quickly testing pH value of soil

A rapid determination and soil technology, applied in the field of analysis and detection, can solve the problems of inconvenient agricultural production, time-consuming, labor-intensive, troublesome, etc., and achieve the effect of low cost and scientific formula

Inactive Publication Date: 2018-05-25
张振飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a test paper for quickly measuring the pH value of soil in view of the problems that the current methods for detecting soil acidity and alkalinity are cumbersome, time-consuming and labor-intensive, and bring inconvenience to agricultural production.

Method used

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Experimental program
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Effect test

Embodiment 1

[0015] A test paper for quickly measuring the pH value of soil, comprising the steps of: accurately weighing 0.25 parts of phenolphthalein, 0.025 parts of thyme, 0.065 parts of methyl, and 0.4 parts of bromothymol, adding them to 40 parts of alcohol, adding distilled water to dilute to Close to 100 parts, shake well, titrate with 0.1mol / ml sodium hydroxide to yellow-green, and finally add distilled water to 100 parts, shake well, then put the above filter paper into the above configuration solution, immerse it, dry it, and cut it into small strips Sealed package, that is.

[0016] When the test paper of the invention is used to measure the pH value of soil, the soil is first dissolved in water, and then the end of the test paper is inserted into the soil aqueous solution, and the pH value of the soil can be quickly measured when the test paper develops color. The specific judgment method is: when the color of the test paper is red, the pH value of the soil is 4; when the color...

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Abstract

The invention belongs to the technical field of analysis and detection, and discloses a test paper for quickly testing the pH value of soil. A preparation method for the test paper comprises the following steps: precisely weighing 0.25 part of phenolphthalein, 0.025 part of thyme, 0.065 part of methyl, 0.4 part of bromothymol blue to add into 40 parts of alcohol; adding distilled water to dilute to about 100 parts to shake up; titrating until yellow green with 0.1 mol / L of sodium hydroxide; and finally, adding distilled water to 100 parts and shaking up, adding filter paper into the configuredsolution, airing after being soaked, and cutting into small strips of 0.8-1.2 cm to seal and encapsulate, thereby obtaining the test paper. The product adopts a easily available raw materials, is scientific in formula, and is low in cost; in use, soil is dissolved into water, and the tail end of the test paper is placed into a soil aqueous solution; after the test paper develops color, the pH value of the test paper can be quickly tested according to the color of the test paper.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, in particular to a test paper for quickly measuring the pH value of soil. Background technique [0002] There are differences in climate between the north and the south of my country. The south is humid and rainy, and the soil is mostly acidic. The north is dry and rainless, and the soil is mostly alkaline. The soil is slightly (over) acidic or (over) alkaline, which will reduce the availability of soil nutrients to varying degrees, make it difficult to form a good soil structure, seriously inhibit the activities of soil microorganisms, and affect the growth and development of various crops. The specific performance has the following five aspects: [0003] One is to reduce the availability of soil nutrients. The availability of phosphorus in soil is obviously affected by acidity and alkalinity. When the pH value exceeds 7.5 or is lower than 6, phosphoric acid and calcium or iron ...

Claims

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Application Information

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IPC IPC(8): G01N21/80
CPCG01N21/80
Inventor 张振飞
Owner 张振飞
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