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Detection method for effective potassium content of compound fertilizer

A detection method, the technology of available potassium, which is applied in the field of chemical detection, can solve the problems of low detection efficiency, achieve the effects of improving efficiency, simplifying the analysis process, and high accuracy

Inactive Publication Date: 2016-08-31
WUZHOU INST OF PROD QUALITY INSPECTION
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Problems solved by technology

[0004] Li Deguang and others disclosed a rapid analysis method for the effective potassium content of compound fertilizers in "Friends of the Farm" No. 10, 2008, but the detection time of this method also needs 1.5h, and the detection efficiency is low

Method used

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  • Detection method for effective potassium content of compound fertilizer
  • Detection method for effective potassium content of compound fertilizer

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Embodiment 1

[0016] 1 Determination steps

[0017] Weigh 2.0g of the laboratory sample (accurate to 0.0001g) into a 250ml Erlenmeyer flask, add 180ml, 35g / L sodium nitrilotriacetate solution, heat and boil in an electric furnace for 2min, remove it and cool it to room temperature with running water, and transfer to 250ml In a measuring bottle, constant volume, dry filtration, to obtain solution A.

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Abstract

The invention provides a detection method for the effective potassium content of a compound fertilizer, and aims to provide a potassium content detection method characterized by accurate and reliable analysis result and short analysis time. The technical points comprises the following steps in order: 1) a determination step: weighing 2.0g of a sample into a 250ml conical flask, adding 180ml of a 35g / L sodium ammonium triacetate solution, heating and boiling the conical flask in an electric furnace for 2min, then removing the flask and performing cooling with running water to room temperature, transferring the solution into a 250ml volumetric flask, setting a constant volume and performing dry filtering so as to obtain a solution A; and 2) determination of potassium content. The invention belongs to the technical field of chemical detection.

Description

technical field [0001] The invention discloses a method for detecting potassium content, in particular to a method for detecting effective potassium content in compound fertilizers, and belongs to the technical field of chemical detection. Background technique [0002] Compound fertilizer is to mix two or three kinds of simple chemical fertilizers, or use one compound fertilizer and one or two kinds of simple chemical fertilizers, to prepare fertilizers with different specifications and different nutrient ratios by mechanical mixing, so as to meet agricultural requirements, especially suitable for Production of special fertilizers. [0003] The national standard GB15063-2001 conducts comprehensive and unified control on the quality of compound fertilizers. In the determination method, there are some imperfections in the analysis of effective potassium content. Adopting the inspection methods in the current relevant standards is time-consuming (the analysis time for each sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00
CPCG01N5/00
Inventor 李德光吕立盈李春燕聂少姬唐嘉慧陈东红麦丰黄敏
Owner WUZHOU INST OF PROD QUALITY INSPECTION