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GB/T 11064.9-2013 English PDF (GBT11064.9-2013)

GB/T 11064.9-2013 English PDF (GBT11064.9-2013)

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GB/T 11064.9-2013: Methods for chemical analysis of lithium carbonate, lithium hydroxide monohydrate and lithium chloride -- Part 9: Determination of sulfate content -- Barium sulfate nephelometry method

This Part of GB/T 11064 specifies the determination method of sulfate content in lithium carbonate, in lithium hydroxide monohydrate, and in lithium chloride. This Part applies to the determination of sulfate content in lithium carbonate, in lithium hydroxide monohydrate, and in lithium chloride. The determination range: 0.0050% ~ 0.80%.
GB/T 11064.9-2013
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.120.99
H 64
Replacing GB/T 11064.9-1989
Methods for chemical analysis of lithium carbonate,
lithium hydroxide monohydrate and lithium chloride -
Part 9. Determination of sulfate content ?€?
Barium sulfate nephelometry method
ISSUED ON. NOVEMBER 27, 2013
IMPLEMENTED ON. AUGUST 01, 2014
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the PEOPLE Republic of China;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Method Summary... 5
3 Reagents ... 5
4 Instrument ... 6
5 Samples ... 6
6 Analysis Steps ... 6
7 Calculation of Analysis Results ... 7
8 Precision ... 8
9 Test report ... 8
Foreword
GB/T 11064 ?€?Methods for chemical analysis of lithium carbonate, lithium hydroxide monohydrate and lithium chloride?€? is divided into 16 parts.
- Part 1. Determination of lithium carbonate content - Acid-alkali titrimetric method; - Part 2. Determination of lithium hydroxide content - Acid-alkali titrimetric method; - Part 3. Determination of lithium chloride content - Potentiometric method; - Part 4. Determination of potassium and sodium content - Flame atomic
absorption spectrometric method;
- Part 5. Determination of calcium content - Flame atomic absorption spectrometric method;
- Part 6. Determination of magnesium content - Flame atomic absorption
spectrometric method;
- Part 7. Determination of iron content - 1,10-phenanthroline spectrophotometric method;
- Part 8. Determination of silicon content - Molybdenum blue spectrophotometric method;
- Part 9. Determination of sulfate content - Barium sulfate nephelometry method; - Part 10. Determination of chloride content - Silver chloride nephelometry method; - Part 11. Determination of Acid-insolubles Content - Gravimetric method; - Part 12. Determination of carbonate content - Determination of lithium chloride content - Potentiometric method;
- Part 13. Determination of aluminum content - Chromazurol S-cetylpyridine bromide spectrophotometric method;
- Part 14. Determination of arsenic content - Molybdenum blue spectrophotometric method;
- Part 15. Determination of fluoride content - Ion selective method;
- Part 16. Determination of calcium, magnesium, copper, lead, zinc, nickel, manganese, cadmium and aluminum content - Inductively coupled plasma
atomic emission spectrometry.
This Part is part 9 of GB/T 11064.
This Part is drafted in accordance with rules given in GB/T 1.1-2009.
This Part replaces GB/T 11064.9-1989 "Lithium carbonate, lithium hydroxide monohydrate and lithium chloride-Determination of sulphide content - Reduction titrimetric method".
Compared with GB/T 11064.9-1989, the main changes of this Part are as follows. - CHANGE the determination method;
- ADD the repeatability terms;
- RE-EDIT the text format; ADD the test report.
This Part shall be under the jurisdiction of National Standardization Technical Committee of Nonferrous Metals (SAC/TC 243).
Drafting organizations of this Part. Sichuan Tianqi Lithium Industries Inc., Lithium-Calcium Company, CNNC Jianzhong Nuclear Fuel Co., Ltd., Haimen Ronghui General Lithium Co., Ltd., and Xinjiang Research Institute of Non ferrous Metals. The main drafters of this Part. Jin Peng, Tu Mingjiang, Gou Haixia, Luo Yuping, Guan Yuzhen, Chen Yan, Zhang Jingdong, Zhao Bing, Deng Hongyun, and Liu Yan. The historical version replaced by this Part is as follows.
- GB/T 11064.9-1989.
Methods for chemical analysis of lithium carbonate,
lithium hydroxide monohydrate and lithium chloride -
Part 9. Determination of sulfate content ?€?
Barium sulfate nephelometry method
1 Scope
This Part of GB/T 11064 specifies the determination method of sulfate content in lithium carbonate, in lithium hydroxide monohydrate, and in lithium chloride.
This Part applies to the determination of sulfate content in lithium carbonate, in lithium hydroxide monohydrate, and in lithium chloride. The determination range. 0.0050% ~ 0.80%.
2 Method Summary
In hydrochloric acid medium, the barium ions and sulfate ions will generate the insoluble barium sulfate. Within a certain time, the barium sulfate is suspended in the solution; measure its absorbance at 420nm wavelength of spectrophotometer to obtain the content of sulfate.
3 Reagents
Unless otherwise specified, the reagent used in this Part is an analytical pure reagent, and the water used in this Part is the secondary deionized water.
3.1 Hydrochloric acid (1+1), GR.
3.2 Hydrochloric acid (1+3), GR.
3.3 Ammonium Hydroxide (1+3), GR.
3.4 Glycerol solution (1+4).
3.5 Barium chloride solution (200 g/L). prepare when it is used.
3.6 Paranitrophenol indicator (1 g/L).
3.7 Sulfate standard stock solution. weigh 0.907 5 g of potassium sulfate (GR) which has been baked for 2h at the temperature of 105??C~110??C in advance, and placed in dryer to cool to room temperature. Place it in a 250mL beaker; dissolve with water; transfer to a - Anomalies observed in the determination;
- Determination date.

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