YS/T 1028.5-2015 PDF English
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Methods for chemical analysis of lithium iron phosphate. Part 5: Determination of calcium、magnesium、zinc、copper、lead、chromium、sodium、aluminium、nickel、cobalt、manganese content. Inductively coupled plasma atomic emission spectrometry
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YS/T 1028.5-2015: Methods for chemical analysis of lithium iron phosphate. Part 5: Determination of calcium、magnesium、zinc、copper、lead、chromium、sodium、aluminium、nickel、cobalt、manganese content. Inductively coupled plasma atomic emission spectrometry
---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/YST1028.5-2015
YS
NONFERROUS INDUSTRY STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
ICS 77.120.99
H 71
Methods for chemical analysis of lithium iron phosphate -
Part 5.Determination of calcium, magnesium, zinc, copper,
lead, chromium, sodium, aluminium, nickel, cobalt,
manganese content - Inductively coupled plasma atomic
emission spectrometry
Issued on. APRIL 30, 2015
Implemented on. OCTOBER 1, 2015
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Method summary... 4
3 Reagents... 4
4 Instruments... 5
5 Samples... 6
6 Analysis steps... 6
7 Calculation... 7
8 Precision... 7
9 Test report... 9
Foreword
YS/T 1028 Methods for chemical analysis of lithium iron phosphate consists of 5 parts.
-- Part 1.Determination of total iron content - Titanium trichloride reduction
potassium dichromate titration methods;
-- Part 2.Determination of lithium content - Flame photometry;
-- Part 3.Determination of phosphor content - Quinoline phosphomolybdate
gravimetry;
-- Part 4.Determination of carbon content - High frequency combustion with
infrared absorption method;
-- Part 5.Determination of calcium, magnesium, zinc, copper, lead, chromium,
sodium, aluminium, nickel, cobalt and manganese content - Inductively coupled
plasma atomic emission spectrometry
This part is Part 5 of YS/T 1028.
This part was drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed and shall be under the jurisdiction of the National Technical
Committee on Nonferrous Metals of Standardization Administration of China
(SAC/TC243).
Drafting organizations of this part. Guangdong Brunp Recycling Technology Co., Ltd.,
Beijing General Research Institute of Mining & Metallurgy, General Research Institute
of Nonferrous Metals, Guangzhou Research Institute of Nonferrous Metals.
Main drafters of this part. Li Changdong, Yu Haijun, Xie Yinghao, Zhang Xuemei, Feng
Xianjin, Jiang Qiutao, Zhang Diankai, Ding Hao, Xiong Xiaoyan, Wang Jin.
Methods for chemical analysis of lithium iron phosphate -
Part 5.Determination of calcium, magnesium, zinc, copper,
lead, chromium, sodium, aluminium, nickel, cobalt,
manganese content - Inductively coupled plasma atomic
emission spectrometry
1 Scope
This part of YS/T 1028 specifies the determination method of the content of calcium,
magnesium, zinc, copper, lead, chromium, sodium, aluminium, nickel, cobalt and
manganese in lithium iron phosphate.
This part applies to the determination of the content of calcium, magnesium, zinc,
copper, lead, chromium, sodium, aluminium, nickel, cobalt and manganese in lithium
iron phosphate. The measurement range is shown in Table 1.
Table 1 -- Measuring range of each element
2 Method summary
The sample is dissolved with hydrochloric acid, the carbon in it is filtered out, and the
element to be measured is measured by using an inductively coupled plasma atomic
emission spectrometer.
3 Reagents
3.1 Hydrochloric acid (guaranteed reagent, ρ≈1.19 g/mL).
Element Element Measuring range w / % Measuring range w / %
3.2 Hydrochloric acid (1+1).
3.3 Hydrochloric acid (1+19).
4 Instruments
Inductively coupled plasma atomic emission spectrometer.
Under the best working conditions of the instrument, any instrument that can achieve
the following indexes can be used.
5 Samples
The particle size of the sample shall not be larger than 0.10 mm.
6 Analysis steps
6.1 Specimen
Weigh the sample (Chapter 5) according to Table 3, accurate to 0.0001 g.
6.2 Number of measurements
Weigh 2 specimens, conduct parallel measurements, and take the average value.
6.3 Blank test
Do a blank test along with the specimen.
6.5 Drawing of working curve
Accurately pipette 0 mL, 0.40 mL, 1.00 mL, 2.00 mL, 5.00 mL, 10.00 mL, and 20.00
mL of mixed standard solution (3.5) into 100 mL volumetric flasks, dilute to the mark
with hydrochloric acid (3.3), and mix well. On the ICP spectrometer with optimized
parameters, measure the spectral intensity of each element such as calcium, magnesium,
zinc, copper, lead, chromium, sodium, aluminium, nickel, cobalt, and manganese, and
draw a working curve.
6.6 Determination
Mass fraction / % Specimen / g Test solution volume / mL
On the ICP spectrometer with optimized parameters, measure the spectral intensity of
calcium, magnesium, zinc, copper, lead, chromium, sodium, aluminium, nickel, cobalt,
7 Calculation
The content of the element to be measured is calculated based on the mass fraction wx
of the element to be measured, and the value is expressed in % and calculated according
to formula (1).
8 Precision
8.1 Repeatability
The measured values of two independent test results obtained under repeatability
conditions are within the average value range given below; the absolute difference
between the two test results does not exceed the repeatability limit (r), the probability
of exceeding the repeatability limit (r) does not exceed 5%, and the repeatability limit
(r) is obtained by linear interpolation according to the data in Table 4.
9 Test report
The test report shall include 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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