This part of GB/T 5070 specifies the method for determining the amount of manganese oxide by flame atomic absorption spectrometry. This part is applicable to the determination of manganese oxide in magnesia-chromium refractories. The determination range (mass fraction) is 0.01% to 0.50%. GB/T 5070.11-2002 Chemical analysis methods for magnesia-chromium refractories Part 11: Determination of manganese oxide by flame atomic absorption spectrometry GB/T5070.11-2002 Standard download decompression password: www.bzxz.net

TCS 81.550
National Standard of the People's Republic of China
GB/T 5070, 1~5070. 12-—2002 Code: b0r.15c7.1-! 8
Chemical analysis of magnesia chromite refractories2002-1231Promulgated
2003-D6-01Implementation
People's Republic of China
National Quality Supervision and Inspection Standard
People's Republic of China National Standard
GB/T5070.11—2002
Generated GT7.3—1
Chemical analysis of magnesia chromite refractories-Part 11.Determination of manganese oxideAtomic absorplion specirophutometric method2002 12 31 Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-06-01 Implementation
GI/T5070.112002
/The following 7 Methods for chemical analysis of casting materials are divided into the following parts: Part 1: Determination of alkali content by electrophotometric method Part 2: Determination of carbon dioxide content by photometric method Part 3: Determination of ortho-dioxide content by photometric method Part 1: FTYTA determination of carbon dioxide content Part 5: Determination of the content of lead by antipyretic methane volumetric method Part 6: Determination of the content of oxidative stress by ETA volumetric method Part 7: Determination of the content of magnesium oxide by EDT1 volumetric method Part 8: Determination of the content of oxidative stress by EDTA volumetric method Part 9: Determination of the content of trivalent ammonium hydroxide by EDTA volumetric method Part 10: Determination of the content of sodium ion by flame ionization bomb Part 11: Determination of the content of iodine by flame ionization bomb Part 12: Determination of the content of sodium ion by atomic absorption spectrometry. This part is (570) Part I
This part (E/13070.91985) Chemical analysis of natural materials by atomic absorption spectrophotometry for the determination of the amount of oxidation.
This part is mainly compared with GT0.9-1 as follows: "Preface", "Normative references", "Quality assurance and control", "Test method", and detailed provisions on the preparation of test pieces, and added provisions for the correction of analytical values, and other provisions are allowed: According to B1.1-2000 Standardization Manual
Part 1: Structure and rules of the cup 3 and G length: 2003, 42 001 standard unified writing current rules Part 4: chemical solution provisions for the structure of the average specification out of adjustment
this part of the time is out of date:
this part of the industry is still out of
this part since the meeting of the month when the fire material cup standardization technical committee (511S/1193 centralized. The office of this department from the Luyang fire resistant research institute
the implementation of the Lan want to draft: chrysanthemum secret. dedication, Gu store ball, the public part of the second version issued is not: GB/T5070.91985.
1 scope
magnesium chromium refractory material chemical analysis method
GB/T 5D070.,1:—2002
Part 1: Flame atomic absorption spectrometry for the determination of manganese oxide: GB5.7 Technical group ship determination "flame atomic absorption spectrometry - modified spectrophotometry for the determination of manganese oxide is the method of the second part of the tenth part of the determination of the national (quality ticket fraction) in the fire material is 2 current normative references
The following clauses are applicable to the part of the case. All the provisions of the table after the film are not included in the table. The technical part is not applicable to the revised version. However, the newest part of this document is not applicable. The latest version of this document is as follows: GB/15070-1-20 (2 Chemical analysis methods for magnesium materials before fire calibration Part 1, Chemical analysis methods for atomic force microscopes and ignition reduction methods (3 General rules for chemical analysis of products by enterprises for fire retardant products GHF3:0) (T1032 Acceptance rules for refractory products / [2 305 laboratory station can be equipped with burette
real age determination glassware single standard version
GET1230
GHT12X08
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for large raw materials and irregular treatment of large materials with GB/T17617
3 principle
sample after the first high temperature decomposition, a fall and clean acid and acid sludge flux to make hydrochloric acid condensate. Dry the resin or make it with a dryer or dryer and read the absorbance at 37°C on a warm spectroscopy instrument. Reagents 2.1 Mix 2 parts molten water with 1 part extremely pure acid (batch grade pure) and 4.2 parts acid float (4.3) and transfer to 100 ml of water to dilute to a solution. 4.3 aldehyde + 4.4 sodium chloride buffer is used.
4.5 Mn(II) oxide standard (containing M-0)1r2/mT) weighs 0.72g of gold and silver (0.%). Place in a 25.5 ml beaker, add 13m salt (4.3) and wait for it to relax. Then move into 0:1 water solution. Add 5m3/m3 of water and use 25.3% manganese oxide as a standard (4.), dry it in 1 ml of water and add 0.5% water.
GB/1 570.1—2002
5 Receiver
5.1 Receiver, air-acetylene combustion gas, hollow electrode, air and acetylene gas should be pure enough (no water, oil, ultrapure), to provide the "low precision", "good quality", "limit of measurement" and "linearity of standard curve" requirements for the atomic spectrum of the non-pure excited drug.
5.2 Burette:/T 12 Class A.
5.3 Pipette: G3T12608A.
5.4 Bottle: 37T12806A.
6 Sampling
6.1 Sampling steps
According to GH:13325 and 6B:11767 laboratory samples. 6.2 Sample preparation
Prepare the sample according to 1/15:11.133-5.
Analysis steps
7. 1. Determination times:
7.2 Sample amount
About 0.10 test, precision code 43.31g.
7.3 Blank test
3.5. Blank test
7.4 Test low test
7.5.: Put the test into the stomach; clamp five times, moisten with a small amount of water. Add 10rT natural oxygen acid 4.1) 2 . Produce chlorine 1). Heat decomposition until the tablets are slightly white, remove, and rinse with cold water to remove the wall of the tablets: 2 high-acid. 5) Heat until the tablets are completely broken by oxygen smoke, and then cool.
7.5.2 Cut 4ml outer section 4.3, -! Request: Heat with low steam until the tablets are dissolved, slowly connect the quantitative group to filter the filtrate to replace the 1ml capacity group, and wash with hot water 3 times -1 time (this is the main skill! 7.5.3 grid wear together with enough agent belt, ten dry and incubate 11g concentrated list (4 fine in high temperature ten 1C long toe [o nin[min empty concave rate ran, dare to. cool.75.4 to ten times people 6 two sit acid: 4.31. less single water, heat to confiscate the reverse work, will Jiwei and soil wave (7..21 city, water forest release three changes, build the whole.
7.5.5H liquid 5.3 transferred into 50.ml. formula liquid 7.5.1 benefit ten 1L volumetric bottle J 4ml. benefit membrane 1.3) H water all selectivity rate chase, practice.||tt 7.5.6 Bake in air-baked water and measure the absorbance at wavelength 75.5 mm on a flame retardant absorption spectrometer. 7.5.7 For samples with low chemical content, use reading solution 7.5, 1) to measure the absorbance. For samples with high chemical content, use reading solution 7.5. 2) to measure the absorbance. Draw the standard curve of the corresponding oxidized product from the standard line 6! Use the elimination method <.2 to transfer, 2.00, =.00, 3.0, 3.0, J 131J2.(rr:I. Place the oxidation standard solution (4.7) in a 1ml volumetric flask (in a flask, add 4.5ml hydrochloric acid), mix well, and use a scaled column with a tape. f6
CB/T 507C.11—2002
7.5.6 Material H photometry: The photometric efficiency of the oxidation concentration is calculated by subtracting the concentration from the standard liquid and setting the standard line. 8.1 The mass of the emulsified plate is calculated by the following formula (2x10×100bzxZ.net
The concentration of the test piece is also checked by the standard line. The unit is micro-energy < ml); - The value of the oxidation concentration obtained by the standard line is calculated as grams (/mIV) of the test solution. The value of the maximum amount of the test sample is calculated as grams: 8.2 After analysis, the value of the maximum amount of the test sample is calculated as grams, which depends on the "gram" or "gram" conditions. The analytical value of the standard substance analyzed below shall not be changed from the new standard value. When the difference between the analytical value of the two standard substances and the standard value is not greater than the allowable difference between them, the sample value is valid, otherwise it is invalid. 5.3 When the difference between the two valid analytical values ​​of the sample obtained does not meet the allowable difference specified in Table 1 below, the value of the half of the analytical value shall be used as the final analysis value. Whether it is listed or not, the analytical sum shall be calculated according to the provisions of Appendix A. 8.4 The selected result shall be rounded to two significant figures according to 5T3!0: If there are other requirements in the supply contract or relevant standards of the client, the required rounding may be reported.
The total value of the two European filter test results obtained under the conditions of the allowable difference
shall not exceed the allowable difference listed in Table 1. Table
Chemical Adaptation (Quality Analysis)
J. 11-- 3. Su
.+--, :3
1U Quality assurance and control
According to the provisions of 4 verification test.
11 Test report
The test report should be as follows:
Commissioning position:
Sample name:
Analysis results:
References to the analysis steps (if necessary): In the test, the abnormal phenomena must be listed: Test period:
GB/T50/C.11—2002
Contact:
--Required in 1,
Attachment A
(Normative annex)
Acceptance analysis value procedure
1.ar
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