Method for determining content of activated brownish black humic acid in active humic acid organic fertilizer

A technology of active humic acid and organic fertilizer, applied in the field of organic fertilizer, to achieve good reproducibility, good extraction effect, and accurate measurement results

Pending Publication Date: 2021-12-10
红河锦东化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for determining the content of activated brown and black humic acid in active humic acid organic fertilizers, so as to solve the problem mentioned in the above background technology in order to control the product quality of humic acid organic fertilizers and promote the health of humic acid synergistic fertilizers. development, it is necessary to detect the content of activated brown and black humic acid in the product; but there is still no scientific and accurate method for the determination of the content of activated brown and black humic acid in organic fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The assay method of activated brown black humic acid content in the active humic acid organic fertilizer comprises the following steps:

[0024] S1. Dissolution and extraction: Weigh 1.0g of the sample into a 250mL conical flask, add 100mL of citric acid-sodium citrate extract, shake the conical flask to wet the sample, and put a small funnel on the mouth of the conical flask , placed in a boiling water bath, heated for extraction; at the same time, a blank test was carried out; wherein, the citric acid-sodium citrate extract was prepared by mixing 70ml of citric acid solution with 930mL of sodium citrate solution and shaking well, and the citric acid-sodium citrate extract was prepared by mixing The concentration of the sodium citrate extract is 0.1mol / L, and the pH value is 6-7;

[0025] S2. Filtration: Take out the Erlenmeyer flask, cool to room temperature, transfer all the extract and residue into a 200mL volumetric flask, dilute with water to the mark, shake well ...

Embodiment 2

[0031] The assay method of activated brown black humic acid content in the active humic acid organic fertilizer comprises the following steps:

[0032] S1. Dissolution and extraction: Weigh 2.0g of the sample into a 250mL conical flask, add 100mL of citric acid-sodium citrate extract, shake the conical flask to wet the sample, and cover the conical flask with a small funnel , placed in a boiling water bath, heated for extraction; at the same time, a blank test was carried out; wherein, the citric acid-sodium citrate extract was prepared by mixing 70ml of citric acid solution with 930mL of sodium citrate solution and shaking well, and the citric acid-sodium citrate extract was prepared by mixing The concentration of the sodium citrate extract is 0.1mol / L, and the pH value is 6-7;

[0033] S2. Filtration: Take out the Erlenmeyer flask, cool to room temperature, transfer all the extract and residue into a 200mL volumetric flask, dilute with water to the mark, shake well and obtai...

Embodiment 3

[0039] The assay method of activated brown black humic acid content in the active humic acid organic fertilizer comprises the following steps:

[0040] S1. Dissolution and extraction: Weigh 1.0g~3.0g of the sample into a 250mL conical flask, add 100mL of citric acid-sodium citrate extract, shake the conical flask to wet the sample, and place a cap on the conical flask A small funnel was placed in a boiling water bath, heated and extracted; at the same time, a blank test was carried out; wherein, the citric acid-sodium citrate extract was prepared by mixing 70ml of citric acid solution with 930mL of sodium citrate solution and shaking well, and The concentration of the citric acid-sodium citrate extract is 0.1mol / L, and the pH value is 6-7;

[0041] S2. Filtration: Take out the Erlenmeyer flask, cool to room temperature, transfer all the extract and residue into a 200mL volumetric flask, dilute with water to the mark, shake well and obtain liquid A, dry filter with medium-speed...

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PUM

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Abstract

The invention discloses a method for determining the content of activated brownish black humic acid in an active humic acid organic fertilizer. The method comprises the following steps of: S1, dissolving and extraction, namely, weighing 1.0-3.0 g of sample in a 250 mL conical flask, adding 100 mL of citric acid-sodium citrate extracting solution, shaking the conical flask to wet the sample, covering the conical flask with a small funnel, placing the conical flask in a boiling water bath, carrying out heating and extracton, and meanwhile, carrying out a blank test; and S2, filtering, namely taking out the conical flask, cooling it to room temperature, completely transferring an extract and residues into a 200 mL volumetric flask, diluting the extract and residues with water to a scale, uniformly shaking to obtain a solution A, performing dry filtration with medium-speed qualitative filter paper, discarding about 5ml of initial solution, and then filtering out 150mL-180mL of filtrate to obtain a solution B. According to the method, the content of the activated brownish black humic acid in the active humic acid organic fertilizer is determined by adopting an acid precipitation volumetric method, so that the allowable difference of the measurement result of the activated humic acid is relatively small, and the measurement result is relatively accurate.

Description

technical field [0001] The invention relates to the technical field related to organic fertilizers, in particular to a method for determining the content of activated brown black humic acid in active humic acid organic fertilizers. Background technique [0002] Humic acid is a macromolecular organic substance that exists widely in nature and is widely used in various fields such as agriculture, forestry, animal husbandry, petroleum, chemical industry, building materials, medicine and health, and environmental protection. Especially now that the construction of ecological agriculture, pollution-free agricultural production, green food, pollution-free environmental protection, etc. are advocated, "humic acid" is highly respected; facts have proved that human life and survival are inseparable from humic acid, and humic acid is an important component of animals and plants. Remains, mainly the remains of plants, are a type of organic matter formed and accumulated through a series...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/02G01N31/16G01N1/28
CPCG01N31/02G01N31/16G01N1/28
Inventor 王守全
Owner 红河锦东化工股份有限公司
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