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Site uranium fast analysis method and special reagent packet for method

A rapid analysis, on-site uranium technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of easy human error, time-consuming, complicated analysis process, etc., to achieve the effect of easy operation and meet on-site requirements

Active Publication Date: 2011-08-17
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the determination of uranium in environmental water samples, the reagents used in conventional UV-visible spectrophotometry include chloroacetic acid-sodium acetate buffer solution, mixed masking agent, arsenazo III solution, 2,4-dinitrophenol indicator, etc. , during the determination process, these reagents need to be added several times, which makes the analysis process cumbersome and time-consuming, and must be completed in the laboratory, and multiple operations are likely to cause human errors, so the application is limited to a certain extent, and it is not suitable for rapid on-site determination

Method used

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  • Site uranium fast analysis method and special reagent packet for method
  • Site uranium fast analysis method and special reagent packet for method
  • Site uranium fast analysis method and special reagent packet for method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Use solid reagent pack 1, a total of 23.95 mg, of which the amounts of arsenazo III, potassium hydrogen sulfate solid, and disodium edetate are 1.25 mg, 2.70 mg, and 20.0 mg, respectively.

[0055] Rapid detection of uranium content in water samples:

[0056] Water sample: tap water - from the tap water pipe in the testing environment;

[0057] West Lake water—taken from the West Lake in Fuzhou City, and take the upper water sample after clarification;

[0058] Fuhe water—taken from Fuhe River in Fuzhou City, after clarification, take the upper water sample;

[0059] Blank: use distilled water as the blank water sample.

[0060] Instrument: DR / 2800 portable spectrophotometer, the absorption wavelength is 650nm.

[0061] Use 10mL colorimetric tubes.

[0062] operate:

[0063] 1) Enrichment of uranium in the water sample: take 500mL of the water sample to be tested, add 0.5g of water-purified activated carbon, filter it with filter paper after shaking for ten minutes...

Embodiment 2

[0076] Example 2: Use solid reagent package 2, a total of 29.00 mg, wherein the amounts of arsenazo III, potassium hydrogensulfate solid, and disodium edetate are 1.00 mg, 3.00 mg, and 25.00 mg, respectively. Other operations are the same as in Example 1, but the uranium standard curve needs to be redrawn for the solid reagent package 2, and the detection results are recorded in Table 2.

Embodiment 3

[0077] Example 3: Use solid reagent package 3, the total amount of one portion is 30.00 mg, wherein the amounts of arsenazo III, potassium hydrogensulfate solid, and disodium edetate are 1.50 mg, 3.50 mg, and 25.00 mg, respectively. Other operations are the same as in Example 1, but the uranium standard curve needs to be redrawn for the solid reagent package 3, and the detection results are recorded in Table 2.

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Abstract

The invention provides a site uranium fast analysis method and a special reagent packet for the method, belonging to the chemical analysis field, wherein in the special solid reagent packet, arsenazoi III, potassium acid sulphate solid without crystal water and disodium ethylene diaminetetraacetate are mixed according to mass ratio of 0.50-1.50:2.70-4.05:10-60; the weight of each part which is separately sealed and packaged is 13.20-65.66mg; during the analysis, the photometric detection of uranium can be performed only by adding the uranium solid reagent packet into a sample. In the invention, the reagent is not necessary to be added in steps, the problems of long time-consuming and complex steps in the traditional detection are solved; and the method has the advantages that the operations are simple, the time is saved, and site requirements are met and the like. The method can be used for batch detections in production.

Description

technical field [0001] The invention relates to an ultraviolet-visible spectrophotometric detection method of uranium, in particular to a rapid, batch and accurate detection of uranium content in a sample by using a special uranium reagent pack. Background technique [0002] Uranium is one of the main natural radioactive elements, which is easy to pollute the environment. Therefore, it is necessary to test environmental water samples near nuclear facilities and uranium mines. The U.S. Environmental Protection Agency stipulates that the maximum level of uranium pollutants in drinking water is below 30 μg / L. In my country, the content of uranium in environmental water samples varies due to different geographical environments, and is generally 10 μg / L. [0003] The photometric analysis methods of uranium mainly include spectrophotometry, catalytic kinetic photometry, flow injection photometry, chemiluminescence analysis, fluorescence photometry, visual colorimetry, etc. Among...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33G01N21/31
Inventor 肖赛金黄龙珠张兴磊杨水平陈焕文
Owner EAST CHINA UNIV OF TECH
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