This standard specifies the method for determining the amount of calcium oxide by flame atomic absorption spectrometry. This standard is applicable to the determination of calcium oxide in magnesium and magnesium-aluminum (aluminum-magnesium) refractory raw materials and products, with a determination range of 0.10% to 2.00%. GB/T 5069.10-2001 Chemical analysis method for magnesium and magnesium-aluminum (aluminum-magnesium) refractory materials Determination of calcium oxide by flame atomic absorption spectrometry GB/T5069.10-2001 Standard download decompression password: www.bzxz.net

1C:s 51.80
Kitchen Standard of the People's Republic of China
CB/T 5069.1-.5069.132001
Chemical analysis of magnesia and magicsia-alumina refraciory malerials2001-12.17 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2002-05-01 Implementation
GB/T 5069.10—7001
This standard is aimed at magnesium and aluminum (aluminum alloy) composite refractory materials, especially low water sensitive low water red-burning materials with a calcium oxide content of less than 2.00%. Based on the GB/T5C69.B1385% iron refractory chemical analysis method ELTA direct determination of the content ... The amount of iron oxide is determined by the phenanthrene photometric method; the amount of aluminum oxide is determined by the FITA titration method; the amount of titanium dioxide is determined by the inverse chemical reaction method; the amount of cobalt dioxide is determined by the flame atomic absorption spectrometry; the amount of calcium oxide is determined by the complex determination method; manganese oxide is determined by the chain yellow flame atomic absorption spectrometry; sodium oxide is determined by the flame atomic absorption spectrometry; this standard was proposed by the former State Metallurgical Industry and Industry Corporation. This standard is the refractories standard for refractory materials. The standard is issued by Baoshan Refractories Co., Ltd. The main persons in charge of this standard are: Lu Yue, Liu Xiaozhi, Lu Wanming, and Liu Xiaoming. $8
National Standard of the People's Republic of China
Chemical analysis method of magnesium and magnesium-aluminum (aluminum-magnesium) refractories Flame atomic absorption spectrometry for the determination of calcium oxide Chemical wonlysis ut ugnesia and inagnekia-aluminarefractory maleriuls-Flumc utomic nbsorplian syectrnmetricmethud [ur delerminalion of caiclum nride cnntent1 Scope
This standard specifies the method for the determination of calcium oxide by flame atomic absorption spectrometry, GD/T5069.102001
This standard is applicable to the determination of calcium oxide in raw materials and products of beverages and our neighbors (sales) for the production of alcoholic beverages, C10%-2. 33.
2 Referenced Standards
The following standards contain the latest articles, which are used in the six standards and are not applicable to the text of this standard. For the purpose of this publication, the versions shown are valid: All standards will be revised. The parties using the standards may also use the latest versions of the following standards: G/237-1977 General Rules for Sample Preparation GB 5169.1-2001 Chemical Analysis Methods for Magnesium and Aluminum (Bait) Materials GB/TR 72-187 General Rules for the Absorption Spectra of Common Metal Products GB/TR[731937 Number of revision rules
GH/113323-20U heat treatment of shaped products 3 Method Summary
Test the sodium-carbon medium to prepare the test wave, use the sodium chloride as the release agent to eliminate the group, test the ten items of the test, "atomic absorption spectrometer liquid length 122.7, measure its absorbance 4 test spot
The reagent used is pure: the water is the second grade. 4.1 Mixing agent: 2 parts sodium phosphate and 1 part primary acid are finely ground, and then homogenized: 1.2 parts hydrochloric acid (1+1).
4.3 Chloride solution (<1℃/1.) Strontium oxide SrCl. + I.G8.26 is deionized in water, weighed into 1CCmL container, diluted with water to 30 ℃.
4.4 Calcium oxide standard solution (containing Ca 0.5mg/m.) Weigh 1.47×R and dry at 110℃ for 2h in a dryer and cool to room temperature. Add a little water to a beaker and put salt in it. After cooling, transfer 1 volume of water to the sample and bring to the scale.
4.5 Calcium oxide standard solution containing (40/ml): Take 25.0℃ calcium oxide solution (1.) and dilute it with water to 500ml container. To the scale, standard:
People's Republic of China State Quality Supervision and Inspection General Administration 20011217 approved 2002-05-01 implementation
GR/T5069.10-2001
4.5 Alumina-alumina mixed with oxygen: except for the oxygen flotation in the reactor to cool to room temperature, the gas is sent to the north (1.2% each) in a blue 4 mixing ratio (4.1) according to the known data, and then add 2. (energy flame 14.1) according to the data, the 11-centimeter melting mr slice is taken! 1 is cooled to the temperature. Use the filter to filter the outer wall of the micro-address, and put it into a beaker containing 1% hydrochloric acid (42) and 50% water. , heat the blood to remove impurities, drain with hot water, cool to room temperature to release the effective product in the human body, mix with rice. 5. Use the original light amplification instrument, equipped with air-/fast burner, calcium hollow electrode lamp, the air must be pure enough (without water, oil, etc.) to provide you with the desired effect. The atomic absorption spectrophotometer used should only meet the following requirements: 5.1 Low precision requirements
or the highest narrow standard liquid absorbance 10 times, calculate the average value and standard deviation of the absorbance, the standard deviation should not be more than 1-5 of the absorbance value
measured low concentration The standard deviation is calculated by measuring the absorbance of the standard solution (not zero concentration) 11 times: the standard deviation should not be exceeded. The standard deviation should be the same as the standard solution. 5.2 Check the linearity of the calibration curve. The ratio of the absorbance difference of the highest section to the absorbance difference of the lowest section is the standard deviation. 6 Samples are processed into small pieces according to the G5 and G0 series. 6.2 Before analysis, the sample should be cooled to room temperature in a desiccator at 1:110 for 2 hours. 7 Analysis steps 7.1 Determination of quantity When analyzing, one or two portions should be weighed for measurement. 7.2 Test quantity Weigh 0.5g sample 0.0001g 7.3 1.4 Verification test 1.5 Test sample 7.5.1 Place the sample (7.3) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.3) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.3) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.3) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.5.2) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.5.1) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.5.2) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.5.1) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1.1). Place the sample (7.5.1) in a mixture of 4.10% sodium hydroxide (1.1) and 1.0% sodium hydroxide solution (1 , heat the surface of the clothes until the melt is full, wash it out with hot water, wet it, dilute it with water to the mark, and divide it into (7.5.2) 1.0ml. in a 100l bottle, add 4.0ml of chlorinated water and 3.0ml of water. Mix it with water and divide it into (7.5.4) and (7.5.4) the original absorption light is set at 422.mm in length, and the air-acetylene flame is connected to the /T778 special adjustment to the maximum performance requirement. After that, use the water to zero, and the air test liquid and the sample liquid (7.3) are measured at a light intensity of 40.0%. GB/T5069.102C01 has 5.0% of the oxidation temperature of the corresponding degree. 7.6 Preparation of calibration curve
Take 0.0.50ml.2.00ml, 4.00ml..6.39ml..8.23m..20.2)m. oxidation standard liquid <4.10um]. Add n-oxidation hydrogen to the mixed solution 4.6) (. Chemical course sensitive? 4.%), add water to the scale, mix well: press 7, measure its absorbance, take the concentration of test calcium as the reference coordinate, subtract the luminosity of the liquid as the reference coordinate, and finally calibrate the system.
B. Expression of analysis results
Day.1 Calculate the mass fraction of calcium carbonate w(CObzxZ.net
in the table:
(c -- c,v X iG
Make the calcium carbonate concentration of the sample liquid checked: m. The blank oxide concentration obtained by the test line is gm; the volume of the test report is in units of positive: take the test amount, in units of",
8.2 Acceptance of the test report
According to the specification of 7.2 in GT5169.12C
H.3 The final result is calculated based on the calculation result of the effective value of the sample. The final result is determined by G/T817. The allowable difference is not greater than the value shown in Table 1. Co:
-1. on.-2. c>
The allowable rate of the sample
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