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Method for rapidly measuring beryllium in mineral rocks

A rapid determination, rock technology, applied in material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve the problems of incomplete dissolution, color interference, etc., to achieve rapid determination Effect

Inactive Publication Date: 2014-12-17
张文知
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Problems solved by technology

[0004] The conventional analysis method for beryllium is the colorimetric method, which is most commonly dissolved by acid, and the method of adding fluoride is used for refractory minerals. The color-developing masking agent generally uses EDTA, which is often incompletely dissolved and the color development is disturbed.

Method used

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specific Embodiment approach

[0011] 1. Instruments and equipment

[0012] Analytical balance, muffle furnace, silver crucible, beaker, colorimetric tube and stand, 72Ⅲ classification photometer

[0013] two. Drugs and Reagents

[0014] NaOH: analytically pure

[0015] Hydrochloric acid: 10% analytically pure

[0016] Ammonia: 10% analytically pure

[0017] Buffer solution: NH per liter 4 Ac16.6g, NaAc36.2g

[0018] Mixed masking agent: aqueous solution, containing glycerin 10%, EDTA disodium salt 2%, sodium oxalate 1%

[0019] Standard solution: commercially available, the diluent contains 10 μg of beryllium per milliliter.

[0020] 3. Determination steps

[0021] Weigh 1.0000g of the sample in a silver crucible, add about 8g of NaOH, melt it in a muffle furnace at 750°C for about 20 minutes, take it out and cool it, put the crucible and the molten material in a 150ML beaker filled with 100mL of pure water, and use it after extraction Stir with a glass rod; use a pipette to draw 10ml of the super...

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Abstract

The invention discloses a method for rapidly measuring beryllium in mineral rocks. The method comprises the following steps: melting a mine sample in NaOH at a temperature of 750 DEG C, cooling, extracting with water, absorbing the clean liquid, adding a composite masking agent, adjusting the pH value, adding a beryllium reagent II solution to carry out color development for 20 to 30 minutes, and finally determining the beryllium content of the mine sample through a visual colorimetric method or a spectrophotometric method.

Description

technical field [0001] The invention relates to the technical field of chemical analysis of mineral rocks, in particular to a rapid determination method for beryllium in mineral rocks. Background technique [0002] Beryllium is a rare metal, and its grade reaches 0.1%. It is a rich ore. But beryllium is an important raw material for the national defense industry. It is used in nuclear reactors, rockets, missiles, spacecraft shells, etc., and is used in aerospace high-energy fuel additives. It is also important in electronics and refractory materials. use. [0003] The development of beryllium selection and application also brings environmental hazards. This is because trace amounts of beryllium can also cause harm to the environment and human beings. Therefore, accurate, fast, and drug-saving analysis methods are needed. [0004] The conventional analysis method of beryllium is colorimetric method, which is most commonly used to dissolve with acid, and the method of adding ...

Claims

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Application Information

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IPC IPC(8): G01N21/78
Inventor 张文知
Owner 张文知
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