Sample preparation method and detecting method for detecting impurities in titanyl sulfate solution

A titanium oxysulfate and sample preparation technology, applied in the preparation of test samples, etc., can solve the problems of increasing the cost of analysis, the impact of strong acidic waste liquid environment, the turbidity of the detection solution, and the interference of detection and analysis.

Active Publication Date: 2012-07-11
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

Although this method effectively avoids the hydrolysis of the titanyl sulfate solution due to the decrease in acidity when the sample solution is divided and diluted to prepare the test solution, and solves the problem of turbidity or even precipitation in the test solution, this technology not only increases the concentration of hydrochloric acid or The amount of acidic reagents such as sulfuric acid and the complexity of the sample matrix composition increase the cost of analysis and the impact of the strong acidic waste liquid after detection on the environment, and the high reagent background blank, acidity effect, and matrix effect all affect the detection of impurity elements. Analysis caused severe disruption

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  • Sample preparation method and detecting method for detecting impurities in titanyl sulfate solution
  • Sample preparation method and detecting method for detecting impurities in titanyl sulfate solution

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preparation example Construction

[0017] The sample preparation method for detecting impurities in the titanyl sulfate solution according to the present invention comprises the following steps: diluting the titanyl sulfate solution with a mixed solution of ethanol and water, thereby preparing a sample for detecting impurities in the titanyl sulfate solution.

[0018] The titanium element content of the titanyl sulfate solution may not be greater than 150g / L, for example, 50g / L˜150g / L. The pH value of the titanyl sulfate solution may be less than 1.

[0019] Titanyl sulfate solution is a titanyl sulfate solution formed after sulfuric acid reacts fully with titanium-rich materials such as titanium concentrate and acid-soluble titanium slag in the sulfuric acid method titanium dioxide production process, and most of the titanium dioxide in the titanium-rich material is decomposed. At the same time, most of the metal oxides are also decomposed into the solution in the form of sulfates such as aluminum sulfate and ...

example 1

[0035] Example 1: Preparation of a sample for detection of impurities in a titanyl sulfate solution and testing the sample

[0036] In Example 1, the water used is ultra-pure grade, the ethanol is premium pure grade, and the ICP-AES is the iCAP6300 inductively coupled plasma atomic emission spectrometer from Thermo Fisher Corporation of the United States.

[0037] First, accurately extract 5.0 mL of titanyl sulfate mother liquor (titanium element content is 50 g / L, pH=0.1) with a pipette, and insert the pipette into a 100 mL volumetric flask to completely release the titanyl sulfate mother liquor in the tube; Dilute the solution composed of ethanol: water = 5:95 (volume ratio) until the volume reaches the mark, and mix evenly to prepare sample No. 1.

[0038] Then, the prepared sample solution was detected by ICP-AES, and the power of the RF generator was set to 1350W. Simultaneous analysis checks are performed directly. After each measurement of the sample solution, rinse ...

example 2

[0039] Example 2: Preparation of a sample for detection of impurities in titanyl sulfate solutions and testing of the sample

[0040] Except measuring titanyl sulfate mother liquor (titanium element content is 120g / L, pH=0.1) 10mL, diluent solution is constituted by the mixture of ethanol and water that volume ratio is 10:90, adopts the same preparation method as Example 1 to prepare Prepare sample No. 2, and test sample No. 2 with the same method as that of Example 1.

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Abstract

The invention discloses a sample preparation method and detecting method for detecting impurities in a titanyl sulfate solution. According to the invention, the sample preparation method for detecting impurities in the titanyl sulfate solution comprises the following steps: diluting the titanyl sulfate solution by using a mixed solution of ethanol and water so as obtain the sample used for detecting the impurities in the titanyl sulfate solution. According to the invention, the method for detecting the impurities in the titanyl sulfate solution comprises the following steps: preparing the sample by using the sample preparation method, and detecting the content of at least one element of Nb, Zr, Pb, Sn, V, Al, Mg, Mn, Mo, Ni, P and Zn in the sample by using at least one method of inductively coupled plasma atomic emission spectrometry, inductively coupled plasma mass spectrometry, flame atomic absorption spectrometry and graphite furnace atomic absorption spectrometry.

Description

technical field [0001] The invention belongs to the field of element detection and analysis. Specifically, the invention relates to a pretreatment method and a detection method for preparing a sample solution when measuring the content of impurity elements in a titanyl sulfate solution. Background technique [0002] Titanium dioxide is widely used in coatings, plastics, electronics, ceramics, papermaking, ink, rubber, chemical fiber, cosmetics, food, medicine and other industries. It is an important inorganic chemical product that has penetrated into all aspects of people's lives. In the production process of sulfuric acid titanium dioxide and other products, sulfuric acid is first reacted with titanium-rich materials such as titanium concentrate and acid-soluble titanium slag, and most of the metal oxides in the titanium-rich materials are decomposed to form sulfate, and titanium dioxide is decomposed to form Titanyl sulfate; then the titanyl sulfate solution settles under ...

Claims

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Application Information

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IPC IPC(8): G01N1/38
Inventor 成勇袁金红胡金荣彭慧仙
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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