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GB/T 23274.8-2009: Methods for chemical analysis of stannic oxide -- Part 8: Determination of loss on ignition -- Gravimetric method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23274.8-2009 | English | 149 |
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Methods for chemical analysis of stannic oxide -- Part 8: Determination of loss on ignition -- Gravimetric method
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GB/T 23274.8-2009
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Basic data | Standard ID | GB/T 23274.8-2009 (GB/T23274.8-2009) | | Description (Translated English) | Methods for chemical analysis of stannic oxide -- Part 8: Determination of loss on ignition -- Gravimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G10 | | Classification of International Standard | 71.040.40 | | Word Count Estimation | 5,581 | | Date of Issue | 2009-01-05 | | Date of Implementation | 2009-11-01 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.2 (Total No.142) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the determination of tin dioxide in the burning of weightlessness. This standard applies to the determination of tin dioxide in the burning of weightlessness. Measurement range of 0. 010% to 1. 00%. | GB/T 23274.8-2009: Methods for chemical analysis of stannic oxide -- Part 8: Determination of loss on ignition -- Gravimetric method
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Methods for chemical analysis of stannic oxide Part 8. Determination of loss on ignition Gravimetric method.
ICS 71.040.40
G10
National Standards of People's Republic of China
Methods for chemical analysis of tin dioxide
Part 8. Determination of weight loss on ignition
Gravimetric method
Posted 2009-01-05
2009-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 23274-2009 "Methods for chemical analysis of tin dioxide" is divided into eight sections.
--- Part 1. Determination of the amount of tin oxide potassium iodate titration;
--- Part 2. Determination of iron content - 1,10-phenanthroline spectrophotometry;
--- Part 3. Determination of arsenic content of arsenic and antimony molybdenum blue spectrophotometric method;
--- Part 4. lead and copper contents - Flame atomic absorption spectrometry;
--- Part 5. Determination of antimony content - Malachite green spectrophotometry;
--- Part 6. Determination of sulfate Visible turbidimetric method;
--- Part 7. hydrochloric acid soluble Gravimetric method;
--- Part 8. Loss on ignition - Gravimetric method.
This section section 8.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
This section from Yunnan Tin Group Co., Ltd. is responsible for drafting.
This section is Liuzhou China Tin Group Co., Ltd., Yunnan Honghe SAIEC IQ participate in the drafting.
The main drafters of this section. Hyland, Hanhong Lan, Lin cream, Jiang Village stretch, Wang Lian, HU Yu Wei.
Methods for chemical analysis of tin dioxide
Part 8. Determination of weight loss on ignition
Gravimetric method
1 Scope
GB/T 23274 standard specifies the method for the determination of the tin dioxide ignition loss.
This standard applies to the determination of tin dioxide ignition loss was measured in the range of 0.010% to 1.00%.
2 principle of the method
Sample is placed in 105 ℃ oven after removal of a small amount of moisture adsorption of natural and placed 800 ℃ high temperature furnace burning 30min, the dryer
Cooled to room temperature, and weighed.
3 Sample
The sample should be sealed packaging. Require prior sample in an oven at 105 ℃, the drying after 1h, out into the dryer to cool to room temperature.
spare.
Step 4 Analysis
4.1 Determination of the number of
Independently two determinations, the mean value.
4.2 Determination
4.2.1 Weigh 10.0g sample (3) (m1, accurate to 0.0001g,), placed in 30mL constant weight porcelain crucible (m1).
4.2.2 The porcelain crucible into the furnace has been heated to a high temperature of 800 ℃, burning for 30min, then cooled at room temperature 12min ~ 2min, set
Cooling in a desiccator 30min, weighed (m1 2).
Calculation results of the analysis of 5
According to equation (1) calculate the ignition loss of mass fraction, expressed in%.
W1 m1 = m1 + 1- 2 m1 m1 × 100
(1)
Where.
M1 --- porcelain crucible mass in grams (g);
M1 2 --- quality porcelain crucible and residue on ignition in grams (g);
M1 --- quality of sample in grams (g).
The results are expressed to three decimal places.
6 precision
6.1 Repeatability
Found two independent test results obtained under repeatability conditions within the average range given below, these two test results
Interpolation obtained.
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