GB/T 5070.12-2002 Chemical analysis methods for magnesia-chromium refractories Part 12: Determination of potassium oxide and sodium oxide by flame atomic absorption spectrometry
Some standard content:
Ics s1, cec
National Standard of the People's Republic of China
GB/T 5070.1~5070.12—2002
Replaces B/ 71l, 1~1:198
Chemical analysis of niagnesia chromite refractories2002-12-31 Issued
People's Republic of China
General Logistics Department of the People's Republic of China
2003-06-01 Implementation
1CS81.080
National Standard of the People's Republic of China
GB［5070.12—2002
GB/T5J72.101985
Chemical analysis of magnesia chromile refraclories--Fart 12, Determination of potassium oxide and sodium uxideAtomic absorption spectrophotometrie method2002-12-31 Issued by the People's Republic of China and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Implementation on June 1, 2003 H/T5C70.12—2002 (T5070 Chemical separation of large materials for road construction is a new method consisting of the following parts: Part 1: Determination of carbon monoxide by spot measurement method Part 2: Determination of "carbon monoxide" by irradiation method Part 1: Non-photometric determination of chemical compounds: Part 2: EDTA method for determination of the amount of aluminum oxide: Part 3: Spectrophotometric determination of ampicillin: Part 4: Calcium hydroxide: Part 5: DTA method for determination of the amount of iodine: Part 6: Volumetric determination of calcium hydroxide: Part 7: ETTA method for determination of the amount of iodine: Part 8: Flow rate determination of trioxide: Part 9: Part 11: Determination of the rate of oxidation by absorption of light by the original tower element 12: Determination of the rate of oxidation by absorption of light by the original tower element, sodium oxide. This part is the 12th part of (H\mY)
This part is the first part of (H\mY) 07-155 Refractory Chemical Analysis and Spectrophotometry for determination of oxidation, chemical analysis,
This part is different from 10001,
"preliminary management", "quality assurance will control" , "trial supervision and authorization", a pair of test column preparation will add the symptoms of the provisions for interchangeability: the training of the analysis value should be adjusted, and the requirements for the extension number of the hole are allowed: according to the second door, 13000 joint slip soil construction guidelines: Part 1: Standard station structure rules and (:15/D 200C1.423013 standard flow writing rules Part 4: Chemical analysis of force control 3, see the regulations on the adjustment of line diagrams and economic methods:
This book is divided into two parts, except for the requirements of the attached letter.
This part of the Shanxi Metallurgical Industry Code is correctedwwW.bzxz.Net
This part of the Standardization Technical Committee for Disaster-Related Materials in the Shanxi Metallurgical Industry (TT:. This part starts from: Jiyuqian Fire Power Research Institute. This part is seven grass people Qiu Zhihong, Liang Xianbei, Shun Ziqiong: This part represents the previous share capital of the South G3: T 5370. 10- 1985.
1 Scope
Chemical analysis methods for magnesium chromium resistant materials
GB/T 5370. :2—2002
Part 12: Flame atomic absorption spectrometry for the determination of potassium oxide and sodium hydroxide content R! This part fully defines the flame atomic absorption spectrometry method for the determination of emulsified products in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. This part is the test method for the determination of the content of potassium oxide and sodium hydroxide in the year. ||[/1,-2002 Chemical analysis methods for pyrolysis materials Part 1: Gravimetric determination of ignition value Certificate/D773 Chemical classification of metallurgical products General principles for absorption spectra (T17: Number of specifications:
3T1 according to 2: Rules for the collection of samples of ignition products 1515:1128:15 Laboratory glass instrument titration TT12R36
GB:T128ax
GH/↓!7617
3 Principle
Experimental cloth glass instrument single loop storage main
Experimental space culture instrument winning bid my absorption eye tube|| tt||Fire irradiation agent and amorphous fire material sampling
Test detailsUse dense single high acid to make colloidal liquid, show atomic radiation instrument wavelength.5m and 58.00 respectively measure the oxidation state and sodium oxide. 4 Reagents
4.1 Acid: pure grade
4.2 High acid: excellent grade
4.3 Nitric acid11) Use pure nitric acid to make
4.4 Potassium chloride standard solution (containing K, tI"mkit:L, weight 0.1g). First buy potassium chloride in an apparatus cooled to room temperature. The apparatus can be 2m. The water grid can be dissolved in the calcined tray and moved 500m. Or use a household dilution book of type 54. Storage: 4.5 Plastics reported oxidation standard increase (tube K.) 1m. H foil fixed tube (5.3 Transfer 30.(1nl, hydrogen peroxide standard box (1.1). Place in" km1. Volume Li book (.711. Month water) and release to the measuring. Production plastic bottle.
4.6 Standard oxidation rate meal (containing Na: (11ng/ml)) Take 0.9% new caustic soda (99.99%) that has been pre-cooled in a sampler at 450-5 °C for 1.5h. Place in a 2m. beaker, add water droplets, transfer to a volume of 5. Month water and dilute to the concentration of plastics reported GB/T 50/U,12--2002
4.7 Standard caustic soda liquid (containing Na) 3.mg/mL). 52) Take 0.nl of standard sodium oxide solution (500ml) in a 500ml volumetric flask (5. Dissolve until 10 minutes, store in plastic bottle.
4.8 pm sodium ion standard solution (K): 0ug/mlNa05mI) Transfer 52.1ml to standard sodium ion solution (5.3> Transfer 52.1ml to standard sodium ion solution (1.7), 5.6cml sodium ion standard solution (1.7), 301ml to two flasks: 5, 1), discard the scale with water, report the penalty, prepare and use now. 5.1 Instruments
5.1 Retract light-receiving instrument, equipped with air-acetylene fast burner, part, heart lamp, gas and gas must be pure enough without water, oil, potassium, radiation, and provide a stable and clean burning flame. The minimum requirements for the "light receiving instrument", "precision change", "characteristic travel length", "limit" and "standard line curvature" of the front line shall comply with the provisions of GB 7726.
5.2 Definition: G/12835A category.
5.3 Symbol: GT2C8A,
5.4 Sample quantity: GE/T126A type
E sampling group
6.1 Sample preservation steps
According to GE/1032 and CB/T17617 sampling group: 6,2 Test library preparation
According to 5.2 Sample preparation of BTaU20
7 Analysis steps
7.1 Determine the number of times
Under sub-renaturation conditions,
7.2 Sample amount
Weigh about 1 minus the accuracy to 0.01
7.3 Blank test
Blank test under the yield renaturation strip.
7.4 Test
In the test sheet, copy the test sheet and the test sheet. 7.5 Determination
.5. Wet the test sample with a small amount of water. Add 2m chlorine (2! Add steam to remove the chlorine, wash with water, add 2m chlorine) and continue heating until the acid is completely absorbed, then remove the 2m chlorine (1.3), heat with water until dissolved, remove the coolant, 1.5,3 release test agent, 1.5,2 transfer to the scale, and clear. .5.4 month transfer (5,3 take 1.3) [. 7. =.5> vertical 5um. and in the bottle, add 1.5mL of acid 4.5) selected single strong package
7.5.6 air-art from fire, water drop, Ding fire ten absorption spectrum wavelength 76li.:m and 9.m, measure the absorbance of oxidation resistance, normal chemical dynamics,
7.5.6. Determination of low-oxidation content of the sample solution 7.5. Find out the corresponding potassium chloride and sodium chloride content from the standard industry, 7.E Standard curve preparation
GB/T 5070.122C02
Use titration (.30, 1.0.2.1.4.2, 6.00, 8.00, 10.GCm1. Potassium chloride-oxygen elimination standard 1.5) bone-line 50T narrow volume (.1) add 2m acid (4.3) with water gradient 9: Y5.5 to measure the absorbance. The change of potassium and emulsified hook concentration should be measured on the card, and the absorbance reported at zero point is used as the ordinate. The standard curve is prepared respectively. 2 Calculation of analysis results
E.1 The amount of potassium oxide (K) or sodium oxide (Na) is expressed as the amount of oxidation, and the following formula is used for calculation: K, =
The value of potassium oxide or its concentration in the test solution obtained from the standard or on the above, the unit is gram 4 liter (I): The total concentration of potassium oxide in the test limit obtained on the standard line, the unit is gram and the number of liters can be 11: The value of the test solution according to the volume of the test solution is taken as the standard (); i.
The total value is taken as the standard (); i.
The total value is gram () 3.2 The analytical value is in the valid, which is determined by the signing of the relevant standard. The difference between the analytical estimate of the relevant material and the standard value of the standard material is not greater than the allowable difference. The analytical estimate of the sample is valid and the result is invalid. When the difference between the valid analytical estimates of the sample is less than the specified tolerance, the arithmetic mean value is used as the final analytical result. The analysis and data processing are carried out as shown below. The obtained results are rounded to two significant digits according to H81. If the relevant standard is required to be supplied, it can be rounded to the required number of digits. The allowable difference is the difference between the two independent test results under the condition of change. Table 1, chemical analysis, chemical analysis, 3.11.--5, 2n
3. 21.--3, 5n
Measurement assurance and control
Perform the verification test according to 7.4,
11 Test is abbreviated
Test load is less than the following content,
·Commissioning unit:
Sample name:
Analysis result:
Used standard (K1500.12-2332)
Compatible with the specified disassembly steps (if required)
Observe the normal phenomenon in the recent inspection (if necessary): Inspection period:
A/T 507C.12-2002
rgl L. 3
>-,,. The first one is
one point price:
F-Table 1,
Appendix A
(Normative Appendix)
Acceptance analysis value procedure
of the difference 1.
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