GB/T 11064.5-2013 PDF English
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Methods for chemical analysis of lithium carbonate, lithium hydroxide monohydrate and lithium chloride -- Part 5: Determination of calcium content -- Flame atomic absorption spectrometric method
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| GB/T 11064.5-1989 | English | 199 |
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Lithium carbonate, lithium hydroxide monohydrate and lithium chloride--Determination of calcium content--Flame atomic absorption spectrometric method
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GB/T 11064.5-2013: Methods for chemical analysis of lithium carbonate, lithium hydroxide monohydrate and lithium chloride -- Part 5: Determination of calcium content -- Flame atomic absorption spectrometric method
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT11064.5-2013
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.99
H 64
GB/T 11064.5-2013
Replacing GB/T 11064.5-1989
Methods for chemical analysis of lithium carbonate,
lithium hydroxide monohydrate and lithium chloride -
Part 5.Determination of calcium content -
Flame atomic absorption spectrometric method
Issued on. NOVEMBER 27, 2013
Implemented on. AUGUST 01, 2014
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
GB/T 11064.5-2013
Table of Contents
Foreword... 3
1 Scope... 5
2 Method summary... 5
3 Reagents... 5
4 Apparatus... 6
5 Samples... 6
6 Analysis steps... 7
7 Calculation of analysis results... 8
8 Precision... 8
9 Test report... 9
GB/T 11064.5-2013
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 5 of GB/T 11064.
GB/T 11064.5-2013
This Part is drafted in accordance with rules given in GB/T 1.1-2009.
The Part replaces GB/T 11064.5-1989 "Methods for chemical analysis of lithium
carbonate, lithium hydroxide monohydrate and lithium chloride - Part 5.Determination
of calcium content - Flame atomic absorption spectrometric method".
Compared with GB/T 11064.5-1989, the main changes of this Part are as follows.
- REVISE the determination range “0.0060%~0.350%” to be “0.0020%~0.35%”;
- REVISE “add 5mL of citric acid solution” to be “add 1mL of citric acid solution”;
- 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. Xinjiang Wuxin Lithium Salt Development Co., Ltd.,
Ganzhou Nonferrous Metallurgy Research Institute, and Haimen Ronghui General
Lithium Industry Co., Ltd.
The main drafters of this Part. Guan Yuzhen, Zhao Fanglan, Lai Jian, Liu Hong, Deng
Hongyun, Chen Xian’an, and Liu Yan.
The historical version replaced by this Part is as follows.
- GB/T 11064.5-1989.
GB/T 11064.5-2013
Methods for chemical analysis of lithium carbonate,
lithium hydroxide monohydrate and lithium chloride -
Part 5.Determination of calcium content -
Flame atomic absorption spectrometric method
1 Scope
This Part of GB/T 11064 specifies the determination method of calcium in lithium
carbonate, in lithium hydroxide monohydrate, and in lithium chloride.
This Part applies to the determination of calcium in lithium carbonate, in lithium
hydroxide monohydrate, and in lithium chloride. The determination range.
0.0020%~0.35%.
2 Method summary
The lithium carbonate and lithium hydroxide samples are dissolved in hydrochloric
acid; lithium chloride sample is dissolved in water. In the dilute hydrochloric acid
medium, at wavelength of 422.7nm on atomic absorption spectrometer, use
lanthanum salt and citric acid as release agent, use air - acetylene flame and standard
addition method to determine it.
3 Reagents
Unless otherwise indicated, all reagents used in this Part are guaranteed reagent, the
water used is deionized water.
3.1 Hydrochloric acid (1+1).
3.2 Lanthanum salt solution. weigh 5.864g of lanthanum oxide [ %9.99)(32 OLaw ];
place them in a 100mL beaker; add hydrochloric acid to dissolve and make it clear
(heat it if necessary); transfer them in 500mL flask; use water to dilute to scale; shake
well. 1mL of this solution contains 10mg of lanthanum.
3.5 Calcium standard solution. pipette 50.00mL of calcium standard stock solution
(3.4); place in a 500mL flask; use water to dilute to scale; shake well. 1mL of this
solution contains 100µm of calcium.
4 Apparatus
Atomic absorption spectrometer. with calcium hollow cathode lamp.
Under the optimal working condition of apparatus, any apparatuses that can reach
following indicators can be used.
5 Samples
5.1 Lithium carbonate sample and lithium chloride sample are baked in advance at
250°C~260°C for 2 h; place them in the dryer to cool to room temperature.
6 Analysis steps
6.1 Samples
Weigh the sample according to Table 1, accurate to 0.0001g.
6.2 Times of determination
Determine twice independently, then take the average value.
6.4 Determination
6.4.1 Place sample (6.1) in a 100mL polytetrafluoroethylene (PTFE) beaker; add
about 5mL of water; cover the surface dish. Add hydrochloric acid (3.1) slowly
according to Table 1; heat with low temperature and boil to remove carbon dioxide;
cool down; transfer the test solution to a 100mL plastic flask; use water to dilute to
scale; shake well.
7 Calculation of analysis results
Use mass fraction of calcium)(Caw to calculate the content of calcium; use % to
express the value; calculate it according to formula (1).
8 Precision
8.1 Repeatability
For the two independent test results obtained under repeatability conditions, within the
average-value range as given below, the absolute difference of these two test results
does not exceed the repeatability limit (r), and the situation exceeding repeatability
limit (r) is not more than 5%. Repeatability limit (r), according to Table 2, adopts linear
interpolation to obtain.
9 Test report
The test report shall contain the following content.
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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