Measurement method for zirconium oxide in drainage sand

A technology of zirconium dioxide and determination method, which is applied in the direction of using chemical indicators for analysis, using titration method for chemical analysis, etc., can solve the problems such as the difficulty of dissolving the sample, achieve the effect of improving the accuracy and precision, and solving the difficulty of dissolving

Inactive Publication Date: 2019-10-18
XINING SPECIAL STEEL
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Problems solved by technology

[0005] In order to make up for the deficiencies of the prior art, the present invention provides a method for determining zirconium dioxide in drainage sand, which solves the problem that the sample is not easy to dissolve during the determination of zirconium

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  • Measurement method for zirconium oxide in drainage sand
  • Measurement method for zirconium oxide in drainage sand
  • Measurement method for zirconium oxide in drainage sand

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Embodiment 1

[0034] A method for measuring zirconium dioxide in drainage sand, comprising the following steps:

[0035] (1) Reagent preparation:

[0036] ① Flux: solid sodium peroxide;

[0037] ② Mixed solvent: 2 parts of anhydrous sodium carbonate + 1 part of boric acid, finely grind and mix;

[0038] ③1.19g / mL hydrochloric acid: ρ=1.19g / mL concentrated hydrochloric acid solution;

[0039] ④HCL1+1: Mix 1 part of 1.19g / mL hydrochloric acid + 1 part of deionized water;

[0040] ⑤HCL1+9: Mix 1 part of 1.19g / mL hydrochloric acid + 9 parts of deionized water;

[0041] ⑥Sodium hydroxide solution: prepare 200g / L sodium hydroxide solution;

[0042] ⑦Xylenol orange indicator: prepare 5g / L xylenol orange indicator;

[0043] ⑧100g / L stannous chloride solution: weigh 10g SnCl 2 In a 300mL beaker, add 20mL of 1.19g / mL hydrochloric acid to dissolve, then dilute to 100mL with water, mix well, and prepare immediately;

[0044]⑨0.01mol / L zirconia reference reagent: Weigh 0.3081g of 99.99% zirconia ...

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Abstract

The invention provides a measurement method for zirconium oxide in drainage sand. The measurement method is characterized by comprising the following steps of preparing a reagent, preparing a test sample in a molten state, performing titration, and calculating zirconium oxide content. The measurement method for the zirconium oxide in the drainage sand has the beneficial effects that flux by whichthe zirconium oxide sample can be completely dissolved is used, accuracy detection data of the measurement method shows that the experiment recycling rate is 99-102%, and precision detection data shows that the RSD of the method is 0.68% and is remarkably higher than that of normal standard of which the RSD is 3%. By the method, the problem that the sample is difficult to dissolve during the measurement process of the zirconium oxide in the drainage sand is solved, so that the accuracy and the precision of a zirconium oxide element in the drainage sand measured by an EDTA complexometric titration method are remarkably improved, and the measurement method can be applicable to production and verification.

Description

technical field [0001] The invention belongs to the technical field of chemical substance analysis methods, in particular to a method for determining zirconium dioxide in drainage sand. Background technique [0002] At present, the main analysis method for zirconium dioxide in drainage sand is the gravimetric method of phenylglycolic acid, but this method not only has a long analysis period, cumbersome operation, and is not easy to control, but also produces white flocculent precipitates of zirconium phenylglycolic acid after adding phenylglycolic acid. When the interfering element hafnium will also generate white flocculent precipitates of hafnium phenylglycolate, which may easily lead to high results; in addition, phenylglycolic acid is an organic reagent with high toxicity, which is a dangerous drug and pollutes the environment. These problems limit the large-scale use of this method. Scale used. [0003] Another commonly used method is the EDTA complexometric titration ...

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Application Information

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IPC IPC(8): G01N31/16G01N31/22
CPCG01N31/16G01N31/22
Inventor 贾秀美祁旭丞陆建民祁正荣潘吉珍姚长发吴朝英乔红梅韵梅兰恩有
Owner XINING SPECIAL STEEL
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