Method for detecting content of fluoride in environment by chromatography of ions

A technology of ion chromatography and detection method, which is applied in the field of detection of fluoride content in the environment by ion chromatography, can solve the problems of insignificant, difficult to effectively evaluate fluorine ecology and environmental effects, etc., and achieve a convenient method and a reliable method. , the effect of reliable implementation

Inactive Publication Date: 2010-08-11
谱尼测试集团股份有限公司
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  • Application Information

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Problems solved by technology

At the same time, different soil parent materials have different mineral combinations, and different soils have huge differences in the absorption intensity and absorption capacity of fluorine. Therefore, the significance of soil total fluorine as a pollution indicator is not very great, and it is difficult to effectively evaluate the ecological and environmental effects of fluorine.

Method used

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  • Method for detecting content of fluoride in environment by chromatography of ions
  • Method for detecting content of fluoride in environment by chromatography of ions
  • Method for detecting content of fluoride in environment by chromatography of ions

Examples

Experimental program
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Embodiment 1

[0023] Example 1: Detection of precision and recovery rate of fluoride content in soil

[0024] (1) Preparation of standard curve: prepare respectively 0.1mg / L, 0.2mg / L, 0.4mg / L, 1.0mg / L, F ion standard solution of 2.0mg / L, and adjust the ion chromatograph to the following chromatographic conditions, Perform ion chromatography analysis. See the appendix for the standard spectrum of F ions. The chromatographic conditions during detection are as follows:

[0025] a) Column: AS14, 4mm×250mm

[0026] b) Eluent concentration: sodium carbonate 3.5mmol / L-sodium bicarbonate 1.0mmol / L.

[0027] c) Eluent flow rate: 1.2mL / min

[0028] d) Injection volume: 25uL

[0029] Carry out ion chromatograph analysis to standard solution, record the equation of fluoride standard curve to be Y=0.2604X+0.0083, linear correlation coefficient R 2 >0.999.

[0030] (2) Sample preparation: Take an appropriate amount of soil samples to remove debris and air-dry them, pass through a 60-mesh sieve and...

Embodiment 2

[0035] Embodiment 2: the precision and recovery rate detection of fluoride content in the sludge:

[0036] (1) Preparation of standard curve: prepare respectively 0.1mg / L, 0.2mg / L, 0.4mg / L, 1.0mg / L, F ion standard solution of 2.0mg / L, and adjust the ion chromatograph to the following chromatographic conditions, Perform ion chromatography analysis. See the appendix for the standard spectrum of F ions. The chromatographic conditions during detection are as follows:

[0037] a) Column: AS14, 4mm×250mm

[0038] b) Eluent concentration: sodium carbonate 3.5mmol / L-sodium bicarbonate 1.0mmol / L.

[0039] c) Eluent flow rate: 1.2mL / min

[0040] d) Injection volume: 25uL

[0041] Carry out ion chromatograph analysis to standard solution, record the equation of fluoride standard curve to be Y=0.2604X+0.0083, linear correlation coefficient R 2 >0.999.

[0042] (2) Sample preparation: Take an appropriate amount of sludge samples to remove debris and air-dry them, pass through a 60-m...

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Abstract

The invention relates a method for detecting the content of fluoride in environment by chromatography of ions, comprising the following steps: weighing appropriate amount of sample into a conical flask, shaking and extracting the sample at the ratio of solid to liquid being 1:5 for 30min, filtering and removing organic matters and heavy metal ions by a method of a pre-processing column. The peak area of sample liquid to be measured of the sample is measured under the optimal chromatographic condition, and the concentration of liquid to be measured is read from a standard curve. The method for detecting the content of the fluoride in the environment is rapid and effective, and the relative average deviation is less than 10.0 percent. Therefore, the method for detecting the content of the fluoride in soil is more reliable and is easy to implement, which can meet the requirements of research and production.

Description

technical field [0001] The invention relates to a method for detecting the content of fluoride in the environment, in particular to a method for detecting the content of fluoride in the environment by means of ion chromatography. Background technique [0002] Soil is an important medium for the fluorine cycle, and the abnormal fluorine content in the soil will cause fluorine reaction symptoms in humans and animals through the action of the food chain. In order to prevent the harm of abnormal fluorine content to human health, animals and plants, the content, distribution and influencing factors of fluorine in soil and the chemical behavior of fluorine in soil have been paid more and more attention by people. [0003] Many scholars have noticed that the fluorine content in soil varies greatly. At the same time, different soil parent materials have different mineral combinations, and different soils have huge differences in the absorption intensity and absorption capacity of f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/14
Inventor 宋薇
Owner 谱尼测试集团股份有限公司
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