This standard specifies the method for determining the amount of titanium dioxide by diantipyrine methane photometry. This standard is applicable to the determination of titanium dioxide in magnesia, magnesia-alumina (aluminum-magnesium) refractory raw materials and products, with a determination range of 0.010% to 0.50%. GB/T 5069.8-2001 Chemical analysis methods for magnesia and magnesia-alumina (aluminum-magnesium) refractory materials Determination of titanium dioxide by diantipyrine methane photometry GB/T5069.8-2001 Standard download decompression password: www.bzxz.net

1S 87.080
National Standard of the People's Republic of China
GB/T 5069.1..-5069.132001
Chemical analysis of magnesia and magnesia-alumina refraciory malerials2001 - 12 . 17 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2002-C5-01 Implementation
GH/T 5069.8—2001
This standard has revised the chemical analysis method of ferrous refractory materials (GR/50$3.71985) for the determination of titanium dioxide by antipyrine photometric method.
This revision will make the chemical analysis method of magnesia refractory materials into a method suitable for the chemical analysis of ferrous and ferrous (aluminum) refractory materials:
This revision adds "first six" and "standard", "small use standard", "allowed bamboo production\standard sample allowable difference". The content of this revision is as follows:
Determination of liquid The maximum absorption wavelength was changed from 42 to 0mm to improve the potential change. In the work of the 3m absorption curve, the number of 1cm was increased to 00--0.20mg/50m to enhance the applicability of the method. The test solution was divided into 25mL from 1C.03mL~25mL to simplify the procedure. This standard is based on the general standard of the new method for the chemical analysis of pyrolysis materials of magnesium (aluminum magnesium) and 13 sub-standards: or method for determination of ignition loss:
molybdenum blue photometric method for determination of carbon dioxide: ||t t||Determination of the amount of carbon dioxide by blue light
Determination of the amount of carbon dioxide by flame atomic absorption spectrometry: Determination of the amount of aluminum oxide by flame atomic absorption spectrometry: Determination of the amount of aluminum hydride by EDTA titration: Determination of the amount of carbon dioxide by antipyretic fluidity method! Determination of the amount of titanium monoxide by hydrogen peroxide spectrophotometry
Determination of the amount of calcium oxide by flame atomic absorption spectrometry: Determination of the amount of calcium oxide by flame atomic absorption spectrometry: Determination of the amount of oxide by flame atomic absorption spectrometry Potassium, oxide solution. This standard shall replace (H/T52S9.7-19%5) from the date of implementation. This standard is proposed by the former District National Bureau of Industry. This standard! The National Refractory Standardization Technical Committee will hold a meeting. The main unit of the standard is: Yangyang Fire Research Institute, the main drafters of this standard are: Xian Wenhui, Xie Qiuhong, this standard is first issued in April 1985.
National Standard of the People's Republic of China
Chemical Analysis Method of Magnesium and Magnesium-Aluminum (Aluminum-Magnesium) Refractory Materials Chemical Analysis Method of Titanium Dioxide Chamber by Diantipyrine Methane Photometric Method 1 Scope
This standard specifies the determination of titanium dioxide content in magnesium (aluminum) refractory materials by the antipyryl methane concentration method. GB/T 5069.820C7
代营.15
This standard is applicable to the determination of titanium dioxide content in magnesium (aluminum) refractory materials and products, with a range of 10~0.1%.
2 Referenced standards
The following standards contain provisions that have become standard texts by reference in this standard: The versions shown are valid for the time being. The director's standard will be revised. The possibility of starting a new version of the standard should be explored. The sampling and sampling of products such as GB/T39.1-1 (1) magnesium and lead (aluminum-magnesium) refractory materials - Chemical separation method for the determination of ignition loss GR/TR1701087 - B/-*10325·2001 - Specification for sampling and acceptance of shaped refractory products 3 Method Summary The sample is dissolved in a mixture of boric acid and a dilute salt medium. The titanium and diantipyrine complex is measured at 390nm in a spectrophotometer. The absorbance of the valence iron is measured by ascorbic acid elimination. 4 Test Method 4.1 Standard: Collect 2 parts of water and 1 part of carbon dioxide. 4.2 Hydrochloric acid 1+1
4.3 Acid + 5.
4.4 Acid solution 10+10, prepare. 4.5 Anorthol A solution (50g/L) is prepared with (121). 4.6 Standard solution of TiO2 (containing TiC./mL). Dongzheng u.UU is pre-heated in 1U and cooled to room temperature in a 9-well solution, add 1g of potassium pyrosulfate and place at high temperature, gradually heat to 700℃~750℃, and then heat the melt with 200mL of iodine to 100mL of 535℃ bottle. 4.7 Standard solution of TiO2 (containing i2gmL), approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on 2001-12-17 and implemented on 2002-05-01
GR/T 5069. 8—2001
Transfer 10).00m2 emulsified standard (4.6, mixed in a 1cc bottle, diluted with sulfuric acid (5+55 to the mark, spread: use to prepare
4.8 cobalt oxide standard solution Ti05/m)
enough garbage 25.0)ml: titanium dioxide standard depth <4.7), placed in 1ccml, discarded bottle, with sulfuric acid (5.195 6.1 The sample should be dried at 105~11n℃ for 2h before analysis, and then placed in a flat fryer and cooled to room temperature. 7. Steps 7. 1 Determination quantity
When analyzing, two samples should be taken for determination. 7.2 Material
Take 5.1 test piece.1% and weigh two samples accurately to 0.017.3 Test
Test with the same sample.
7.4 Verification test
Analyze the same type of standard material with the same sample. 7.5 Determination
7.5.1 Mix the material with the lead sulfide of 2 lengths (4.1), mix, then cover with 1 mixture (4.1), cover with a film, put into a 300-u high temperature furnace and heat to 10T~110°C for 5-15min, take out, transfer and let the ether bacteria adhere to each crucible and cool. 7.5.2 Replace the filter paper with a cold glass. Place 200 ml of 50 ml boiling acid (4.3). Heat the mixture. Let the mixture cool to room temperature. Wash the mixture with water and transfer it to a 100 ml volumetric flask. Use water to transfer 25 ml of the test solution (7.5.2) from step 7.5.3. Add 1 ml of cyclohexane (1.4) to the 50 ml volumetric flask. Add 1 ml of diantimony acid (4.5), 12. 1r:1. Hydrogen 21.2), diluted with water to the scale, divided, placed 4 (1mm, 7.5.5, with appropriate absorbance (Table 1), D spectrophotometer wavelength 390 also placed in the empty test solution as a ratio to measure its light response Table 1
w(T,j/3
guaranteed to receive the straight /u
working curve
7.61 as the plot
0. 01~-n 20
n, 70~.n. 3c:
. 5. 2
7.6.1 Transfer the C2.cntril.4.00rt..6.oml..8.Ccu, 10.00mL titanium monoxide standard wave (1.8). Add 4.4mL ascorbic acid and 51mL ampicillin methane solution (4.12mL) and 4.3mL ampicillin methane solution to the correct volume. Dilute with water to the desired concentration, place the spectrophotometer at 4min/3m absorption m, and measure the photometry with the reagent space as reference. 32
GH/T 5069 8-2001
7.6.2 Transfer C, 1.00mL.2.00mL.4.00cal..5.00ml..8.0cmL, 10.0uml. Titanium dioxide standard solution 4.7) Do not adjust the volume bottle, people no longer people m. Antipyretic methane tour 4.5, 12r1. Dilute the acid (4.2) with water and shake it with a 4-scale spoon. Adjust the temperature for 40 minutes and use a 1cm1 spectrometer at a wavelength of 39nm. Take the sample as the reference and measure the concentration. 8.1 Calculate the effective amount of titanium dioxide in the following format:
Where, the amount of titanium dioxide obtained by this work is in units of minutes.
8.2 The frequency of the collected values ​​is
GR/T EOES.-
20172.
8.3 Final result calculation bzxz.net
The arithmetic mean of the effective analysis values ​​of the samples is the final result. The results should be (B/8170 sieve to two small effects, the result is less than 0.10% of the test rate to one decimal place. 9 allowable difference
points The test value should not be greater than the allowable difference listed in the table: Table 2
0.>13--0.05n
-+0. 050.--.. 10
*0. _0 --.50
Bad sample dragon car
±0007
Sample allowable ticket
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