GB/T 5069.5-2001 Chemical analysis methods for magnesia and magnesia-alumina (aluminum-magnesium) refractories - Determination of iron oxide content by flame atomic absorption spectrometry

This standard specifies the method for determining the amount of iron oxide by flame atomic absorption spectrometry. This standard is applicable to the determination of iron oxide in magnesia and magnesia-alumina (aluminum-magnesium) refractory raw materials and products. The determination range (mass fraction) is 0.15% to 3.00%. GB/T 5069.5-2001 Chemical analysis method for magnesia and magnesia-alumina (aluminum-magnesium) refractory materials Determination of iron oxide by flame atomic absorption spectrometry GB/T5069.5-2001 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB/T5069.--5059.132001
Chemical analysis of magnesia and nagutsiaalumina refractnry malerials2001-12.17 Issued
Shandong People's GovernmentWww.bzxZ.net
National Quality Supervision, Inspection and Quarantine Authority.
2002-05-01 Implementation
G3/T 5069.52001
The standard is aimed at the magnesium, magnesium aluminum (lead magnesium>) refractories, especially the anti-iron oxide content in refractory products is less than 3.09%. Therefore, on the basis of the determination range of the o-chlorophenanthrene spectrophotometric method for the chemical analysis of magnesium refractories in G5a, 4-1935, the flame atomic absorption method for the determination of low-oxidation animal husbandry is added. This time, the chemical analysis method of the quality refractories is revised to a new method for the chemical analysis of magnesium, magnesium, aluminum, and other quality refractories.
This standard is under the general title of obtaining two and rust rock collection! Quality refractory chemical analysis method, which includes 11 sub-standards for the determination of the ignition content by gravimetric method;
including the determination of silicon dioxide by spectrophotometry of the main Bi Bo Yi; and the determination of the oxide material by the flame source light collection of the wind-type phenanthrene spectrophotometry. Determination of the amount of oxidized iron; determination of the amount of oxidized iron by optical method; determination of the amount of oxidized iron by FIA method; determination of the amount of oxidized iron by FIA method; determination of the amount of oxidized iron by FIA method; determination of the amount of oxidized iron by FIA method; determination of the amount of oxidized iron by the flame atomic absorption spectrometry; determination of the amount of oxidized iron by the complexation method; determination of the amount of oxidized iron and magnesium by the flame atomic absorption spectrometry; determination of the amount of oxidized iron by the flame atomic absorption spectrometry. This standard was originally proposed by the State Metallurgical Industry Bureau. This standard is under the jurisdiction of the National Technical Committee for Standardization of Refractory Materials. The originators of this standard are: Bao 1.1 Co., Ltd. The main originators are: Yue Huang, the Ministry of Force, Dang Dan Guang, Lu Wanming, Liu Xiaoping 17
National Standard of the People's Republic of China
Magnesium and magnesium-aluminum (aluminum-magnesium) refractory chemical analysis method flame atomic absorption spectrometry determination of iron oxide content Chemical analysis of magnesia andmagnesia-alumina refractories materialx- flame alomic absorptionspectrum for determinalion of iron oxideconient1Scope
This standard specifies the scope of pyrolysis: Absorption spectrum determination of iron oxideGR/T5069.5207
This standard applies to the determination of the amount of small oxide in raw materials and products of pyrolysis (quality content): n.%-~ac
2Referenced standards
The following standards contain clauses, which become the clauses of this standard through reference in this standard. When this standard is revised, the latest version is valid. All standards will be revised. For the purpose of this standard, the latest version of the following standards shall be used before the introduction of the design.GH/T20071S2? Sample collection of packaged products, general rules for sample preparation G13/5069.1-20 American quality and quality (record) refractory tree chemical analysis method for determination of average ignition value by gravity method G13/771S87 gold product. Chemical analysis of refractory products + absorption spectrometry GI3/TK170-19H? Numerical specification GB 1032-20-Standardized market refractory products sampling and acceptance rules 3 Method Summary
The test rod is made of carbonic acid-boric acid mixed with a mixture of fuel, and the bismuth salt is collected to form a liquid. The atomic absorption spectrometer is 28.3m long and its absorbance is measured:
4 Reagents
All reagents are of high purity unless otherwise specified; the water used is dioic acid water, 4.1 Mixed flux: 2 parts of anhydrous carbonic acid and 1 part of boric acid, mix. 4.2 Salt (1-1):
4.3 Mixed flux-hydrochloric acid solution: Weigh 12.0g (4.1). Place in a beaker containing 80ml salt (42)m[.water. Heat to dissolve, cool to a constant temperature and transfer to 253m3/s volumetric volume, dissolve at a constant rate of water, and mix. 4.4 Standard reduction of Fe (Fe 0.1ng/ml) Weigh 3070g of Fe (99)T produced by calcining in a dryer at room temperature for 39min, cool to room temperature, place in a 3)m dish (4.2), heat at low temperature to dissolve, transfer to 1ml volumetric ... General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China 2001-12-17 Regulations 15
2002-05-01 Specification
GB/T 5069. E—20J1
Atomic absorption spectroscopy, equipped with a gas-fired fast-burning lamp. The gas and the gas content are sufficiently pure, molybdenum, iron (to provide a stable and lean combustion): The instrument used should meet the following requirements: 5.1 Minimum absorption requirements
Measure the standard absorbance of the high concentration 10 times, the standard deviation of the light mean, the standard range is generally not more than 1.5 times the half mean of the absorbance.
Record the absorbance of the standard solution of low concentration (not zero concentration) once and calculate its standard deviation. The standard solution should be more than 5% of the average absorbance of the high concentration standard solution. 5.2 The linearity of the curve
The ratio of the absorbance of the highest concentration in the concentration range to the absorbance of the lowest concentration range should not be less than ?6 Samples
According to R/10325 and GR/2007, the sample should be taken and prepared. 6.1 The sample should be 1 to 100 μm in size.
6.2 Before analysis, the sample should be dried at 105 °C ~ 11 °C for 2 h and then cooled to room temperature in a T reactor. "Analysis steps
7.1 When analyzing the sample, select 2 samples for determination. 7.2 Samples
Take 0.30 1 7.3 Empty test
Confirm the test with the following test:
7.4 Verification test
The sample can be separated by the lamp. 1.5 Determination
7.5.1 Place the sample (7.) in a mixture of 4.1 inductively coupled steel and 2.0 inductively coupled steel (4.1), add 1.0% electric charge and adjust the temperature. Place the sample at 8000℃ and heat it to 1u0 (-1100℃ for 45min and take it out and cool it to full temperature. 7.5.2 Wipe the outside of the pot with paper, add 40% water, 4.2% sodium bicarbonate, put it in a drying cup, cover the surface, heat the solution until the solution disappears, wash it with water and cover it, cool it to room temperature, transfer the solution to a bottle, store it in a bottle, dilute it with water, mix it, and mix it. 7.5.3 Take 50.00ml of (7.5.2) and dilute it with 10nmL of water. Mix it until it is mixed. 7.5.4 At the wavelength of 248.%nm, adjust the device to the maximum rate with a fast flame at F5/72. After the performance is complete, use the standard line method, take the absorbance of the water-free blank solution (7.5.3) as the absorbance, transfer 0, 0.50mt, 1.0Um..2.00nt, 4.29al..8.00mt..10.00m. group oxide standard micropipette (1.11) into a set of 1CCml storage disks respectively, add 25.0ml of hydrochloric acid to obtain (1.31) water sample until the absorbance is reached, measure the absorbance change according to 7.5.1, and take the concentration of The degree is the measure, and the ratio is: the absorbance of the zero concentration liquid is subtracted) as the model, and the cat curve is drawn. 19
8 Description of the analysis results
G/F:5069.5
8.1 According to formula (1), calculate the iron oxide sensitivity (eo) x1g
, the center of the formula, "--calibration curve in the test room is the calibration curve of the test room. The unit is T. The calibration curve becomes the full oxidation head of the test room, the unit is g/:V-the volume of the test visit is ml: the sample is taken, the unit is g.
8.2 The acceptance of the analysis
shall be carried out in accordance with the provisions of 7.2 of GB/T5069.)-2001. 8.3. After the final sampling
, the arithmetic half-mean of the effective analysis value is calculated as the final analysis result. The result is obtained (B8170 rounding factor is two decimal places. 9 allowable difference
The difference in the analysis result is not greater than the allowable difference listed in Table 1. Table)
>1. --3. 00
Standard sample is allowed to compete
Sample filling pad
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