Method for detecting quick-acting potassium and slow-acting potassium in soil

The gradient dilution method of ammonium acetate and nitrate solution was solved through the flame atom absorption spectrum combined with ammonium acetate and nitrate solution, which solved the problem of soil medium -speed potassium and slow potassium detection errors and low precision.

CN119354906AInactive Publication Date: 2025-01-24HUNAN AEROSPACE TIANLU NEW MATERIAL TESTING CO LTD
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Patent Information

Application Number
CN202411809704.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-01-24
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing soil fast-acting potassium and slow-acting potassium detection methods have problems such as large errors, difficulty in ensuring precision, cumbersome operation, low work efficiency and unstable detection results.

Method used

The flame atom absorption spectrum combined with the gradient dilution method of ammonium acetate and nitrate solution was used to detect the standard curve drawing and sample immersion to accurately determine the content of soil medium -speed potassium and slow -acting potassium.

Benefits of technology

It achieves rapid and accurate detection of available potassium and slow-acting potassium in soil. It is easy to operate, low cost, high work efficiency and low energy consumption. The detection results are stable and suitable for various types of soil.

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Abstract

The invention relates to a method for detecting quick-acting potassium and slow-acting potassium in soil. The method comprises the following steps: drawing a standard curve: carrying out gradient dilution and detection on a potassium standard substance, and drawing a quick-acting potassium standard curve and an acid-soluble potassium standard curve; determining the quick-acting potassium, and then obtaining the content of the quick-acting potassium in the soil according to the quick-acting potassium standard curve; then, the slow-acting potassium is measured, and the content of the slow-acting potassium in the soil is obtained according to the acid-soluble potassium standard curve; when the flame atomic absorption spectrum instrument is used for detection, the measurement time is 3-5s; the wavelength is 766.5 nm; the passband is 1.0 nm; the flow rate of the fuel gas is 1.0 to 1.2 L / min; the height of the combustor is 6.0 to 8.0 mm; and the lifting time of the atomizer is 3-5s. The device can rapidly and accurately detect quick-acting potassium and slow-acting potassium in soil, is convenient to operate, low in cost, high in working efficiency, low in energy consumption, stable in detection result and suitable for various types of soil, and has good popularization and application values.
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Citation Information

Patent Citations

  • Method for measuring slowly available potassium and rapidly available potassium in soil

    CN109470689A

  • Method for measuring the amount of exchangeablepotassium ion in soil using spectrophotometer

    KR1020010107392A