Method for determining chlorine content in compound fertilizer by using energy dispersion X-ray fluorescence analysis

A compound fertilizer and energy dispersion technology, applied in the field of analysis and detection, can solve problems such as low sensitivity of chlorine element, and achieve the effects of quantitative analysis, convenient operation and cost saving.

Inactive Publication Date: 2018-06-29
SHENYANG NORMAL UNIV
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Problems solved by technology

[0003] Based on the shortcomings of energy dispersive X-ray fluorescence analysis in the measurement of light elements, and aiming at the problem of low sensitivity of energy dispersive X-ray fluorescence spectrometry in detecting chlorine elements, the present invention provides a reasonable and effective energy dispersive X-ray fluorescence analysis applied to chlorine content measurement method

Method used

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  • Method for determining chlorine content in compound fertilizer by using energy dispersion X-ray fluorescence analysis
  • Method for determining chlorine content in compound fertilizer by using energy dispersion X-ray fluorescence analysis
  • Method for determining chlorine content in compound fertilizer by using energy dispersion X-ray fluorescence analysis

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Experimental program
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Embodiment 1

[0031] The compound fertilizer samples were pretreated, and the samples to be tested were prepared as figure 2 Shown:

[0032] The ingredients in compound fertilizers are generally K 2 SO 4 , KCl, NH 4 Cl;

[0033] a: Weigh 5 parts of compound fertilizer samples with a mass of 1g, pour them into five 250mL beakers, add 100mL of water to each part, make the soluble substances exist in the solution in the form of ions, slowly heat to boiling, and continue to simmer Boil for 10min, cool the solution to room temperature;

[0034] b: Add 5ml of nitric acid (1+1) solution to each solution, shake the beaker lightly, then add barium nitrate solution respectively, the barium ions in the solution react with sulfate ions to form barium sulfate precipitate, let it stand, at this time the solution The precipitation is acid insoluble matter and barium sulfate precipitation, which is called impurity precipitation; its reaction formula mainly includes:

[0035] Ba 2+ +SO4 2- = BaSO ...

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Abstract

The invention discloses a method for determining a chlorine content in a compound fertilizer by using energy dispersion X-ray fluorescence analysis, which belongs to the technical field of analysis detection. The method mainly solves the problems of low excitation efficiency, poor result precision, low sensitivity and low efficiency for direct detection of a chlorine element in the prior art. Themethod is characterized in that a compound fertilizer sample on market is pre-treated, a standard sample and a to-be-measured sample are prepared, an energy dispersion X-ray fluorescence spectrometeris used for measuring a silver element in the sample, a characteristic peak area of the silver element is detected, a scaling curve is substituted, and the percentage content of the silver element inthe sample is obtained, according to a chemical quantity relation of silver and chlorine in silver chloride, the content of the chlorine element in the compound fertilizer can be calculated. The chlorine content in the compound fertilizer can be measured through the indirect measurement method, and the method has the characteristics of accuracy, convenience, economy, and easy operation.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a method for measuring chlorine content in compound fertilizers by using energy dispersive X-ray fluorescence analysis. Background technique [0002] At present, the methods for detecting the content of light elements in substances mainly include chemical analysis and instrumental analysis. Chemical analysis methods can be divided into specific measurement methods such as burning lamp method, tube furnace method, gravimetric method, neutralization titration method, colorimetric method and volumetric method for different elements and sample types. Simple use of ordinary chemical methods can accurately quantitatively analyze light elements, but the steps are cumbersome, time-consuming, and require operators to have relatively rich chemical knowledge and high experimental quality. Therefore, instrumental analysis methods are becoming more and more common. favored by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
CPCG01N23/223
Inventor 邓玉福于水马跃
Owner SHENYANG NORMAL UNIV
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