GB/T 30902-2014 PDF English
US$225.00 · In stock · Download in 9 secondsGB/T 30902-2014: Inorganic chemicals for industrial use - Determination of impurity element - Inductively coupled plasma optical emission spectrometry (ICP-OES) Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 30902-2014 | English | 225 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Inorganic chemicals for industrial use - Determination of impurity element - Inductively coupled plasma optical emission spectrometry (ICP-OES)
| Valid |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 30902-2014
GB/T 30902-2014: Inorganic chemicals for industrial use - Determination of impurity element - Inductively coupled plasma optical emission spectrometry (ICP-OES)
---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/GBT30902-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.060.01
G 10
Inorganic chemicals for industrial use - Determination of
impurity element - Inductively coupled plasma optical
emission spectrometry (ICP-OES)
Issued on. JULY 08, 2014
Implemented on. DECEMBER 01, 2014
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Principle... 6
5 Reagents... 6
6 Instruments and apparatuses... 7
7 Procedure... 7
8 Precision... 11
9 Recovery... 11
Appendix A (Informative) Preparation of multi-element standard solutions... 12
Appendix B (Informative) Wavelength of analysis spectral lines of elements to be
measured... 13
Appendix C (Informative) Determination method of detection limit... 15
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by China Petroleum and Chemical Industry Federation.
This Standard shall be under the jurisdiction of Subcommittee on Inorganic Chemical
Industry of National Standardization Technical Committee of Chemical (SAC/TC
63/SC 1).
Drafting organizations of this Standard. Hubei Xingfa Chemicals Group Co., Ltd.,
CenerTech Tianjin Chemical Research and Design Institute Co., Ltd., Jiangxi Nuclear
Industry Xingzhong Technology Co., Ltd., FINE Chemicals Group Co., Ltd., First Rare
Materials Co., Ltd., Guangdong Shantou Quality Measurement Supervision and
Inspection Institute, National inorganic salt product quality supervision and Inspection
Center.
Main drafters of this Standard. Xiong Ping, Ding Ling, Hu Changwen, Cai Laijun, Zhu
Zanfang, Du Jianxia, Chen Min, Gong Chuangzhou, Liang Yuan.
Inorganic chemicals for industrial use - Determination of
impurity element - Inductively coupled plasma optical
emission spectrometry (ICP-OES)
Warning. Some of the reagents used in this test method are toxic or corrosive, so
be careful when operating! If it splashes on the skin, rinse it with water
immediately, and in serious cases, treat it immediately; high-pressure argon gas
cylinders are used in this test method and shall be operated according to the safety
operation regulations of high-pressure cylinders; after igniting the plasma, the
torch chamber door shall not be opened to prevent high-frequency radiation from
harming the body; pay attention to safe use of electricity.
1 Scope
This Standard specifies the principle, reagents, instruments, apparatuses, analysis steps,
precision, and recovery rate for the determination of metallic and non-metallic impurity
elements in inorganic chemicals for industrial use using inductively coupled plasma
optical emission spectrometry (ICP-OES).
This Standard applies to direct injection of liquid samples containing various impurities
in inorganic chemicals for industrial use or test solutions after removing the matrix,
using an inductively coupled plasma optical emission spectrometer for measurement.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 4470, Analytical spectroscopic methods - Flame emission, atomic absorption
and atomic fluorescence - Vocabulary
GB/T 4842, Argon
GB/T 6379.2, Accuracy (trueness and precision) of measurement methods and
results - Part 2.Basic method for the determination of repeatability and
reproducibility of a standard measurement method
GB/T 6682-2008, Water for analytical laboratory use - Specification and test
methods
3 Terms and definitions
Terms and definitions determined by GB/T 4470, as well as the following, are
applicable to this document.
3.1
plasma
An ionized gas with an ionization degree greater than 0.1% and equal positive and
negative charges.
3.2
high frequency generator
A high-frequency power source that provides high-frequency energy to the coupling
coil and plasma.
3.3
plasma torch
A device, used to maintain stable discharge in ICP, which is usually composed of three
layers of concentric quartz tubes. The outer tube supplies coolant gas, the middle tube
supplies auxiliary gas, and the inner tube supplies carrier gas.
3.4
incident power
The net power delivered to the coupling coil and plasma by the high frequency generator.
3.5
observation height
The height of the exposed area of the plasma torch, i.e., the distance from the center of
the observation area to the upper end of the coupling coil.
4 Principle
After the liquid sample is brought into the atomization system by the carrier gas for
atomization, it enters the axial channel of the plasma in the form of an aerosol, and is
fully evaporated, atomized, ionized and excited in the high temperature and inert gas.
5 Reagents
5.1 Unless other requirements are specified, the reagents used refer to reagents of
analytical grade or above.
5.2 Laboratory water shall meet the specifications for water of grade 2 or above in GB/T
6682-2008.
5.3 Standard stock solution. The standard stock solution of each analytical element shall
be prepared according to the regulations in HG/T 3696.2.
6 Instruments and apparatuses
Inductively coupled plasma atomic emission spectrometer. consisting of a sampling
system, an excitation light source, an optical system, a detection system and a data
processing system.
7 Procedure
7.1 Selection of measurement conditions
7.1.1 Analysis spectral line of elements to be measured
Refer to Appendix B for the wavelength of the analysis spectral line of elements to be
measured.
7.1.5 Gas flow
Determine the optimal flow rate of each gas according to the torch and analysis
requirements. The argon gas used shall comply with the requirements of GB/T 4842.
7.1.6 Analysis time
Washing time and exposure time are determined by the instrument and analysis
requirements.
7.2 Elimination of interference
7.2.1 Some interference effects in the light source shall be limited to a certain level by
adopting appropriate separation methods and selecting appropriate element spectral line,
observation height, incident power and carrier gas flow rate. For spectral interference,
methods based on correction of interference factor, matrix separation method, or
software provided by the instrument manufacturer can be used for correction. For non-
spectral interference, matrix matching or standard addition methods shall be used for
correction.
7.3 Sample treatment
7.3.1 Laboratory equipment
7.3.1.1 For general micro and trace analysis, pay attention to the overall cleaning of the
laboratory.
7.3.2 Sample pretreatment methods
7.3.2.1 Open container digestion method
The sample and reagents are heated in an open container over a flame or on an electric
hot plate or in an electric furnace. This method is the most commonly used. This method
has lower requirements for equipment and can be used for simultaneous digestion of
large batches of samples. The disadvantages are that it takes a long time, the pollution
is serious, and the accuracy and precision are poor.
7.3.2.2 Closed container digestion method
It is a decomposition method of wet digestion carried out under heat and pressure in a
closed container (usually made of polytetrafluoroethylene) by using acid or other
reagents.
7.3.3 Liquid solution requirements
After the sample is processed, adjust the volume to an appropriate volume according to
the content of the element to be measured, and make the sample solution.
The sampling volume is determined based on the mass concentration of the element to
be measured in the sample and the detection limit of the method; the mass concentration
of the element to be measured in the sample solution shall be at least three times the
detection limit of the element. See Appendix C for the determination method of
detection limit.
7.4 Determination
7.4.1 Qualitative analysis
Based on three or more sensitive lines of the element to be measured in the spectrum,
qualitatively determine whether the element to be measured is present. Generally, there
are two qualitative methods. comparative spectral line method and semi-automatic
qualitative analysis.
7.4.2 Semi-quantitative analysis
The approximate content of the element to be measured in the sample can be measured,
and semi-quantitative analysis results can be obtained using the software provided by
the ICP-OES instrument. Generally, there are two semi-quantitative analysis methods.
partial calibration method and persistence curve method.
7.4.3 Quantitative analysis
8 Precision
It can be determined according to GB/T 6379.2.
The repeatability precision within the same laboratory can be determined by using the
same instrument under the same measurement conditions and by the same person for
no less than 11 measurements to determine the laboratory standard deviation and
laboratory repeatability.
9 Recovery
Add an appropriate amount of the standard solution of the element to be measured to
the sample solution; respectively measure the mass concentration of the sample solution
before and after the addition of the standard.
Appendix A
(Informative)
Preparation of multi-element standard solutions
A.1 When mixing and preparing commercially available single element standard
solutions, the influence of anions on the ions of the element to be measured must be
considered. For example, sulfate ions will cause Ba2+ to precipitate out. The influence
of chloride ions should be considered when measuring Ag+.
A.2 When many elements are measured at the same time, the high-low matching
method should be used to prepare the standard series. Avoid large differences in the
soluble solids of each standard sample in the series, which may cause significant matrix
effects.
Appendix B
(Informative)
Wavelength of analysis spectral lines of elements to be measured
Appendix C
(Informative)
Determination method of detection limit
Prepare 4 ~ 5 standard solutions and blank solutions of the element to be measured with
proportional mass concentrations; adjust the instrument to the best working condition;
measure the intensity values of the series standard solutions; draw a standard curve; at
the same time, measure the mass concentration value of the blank solution 10 times
continuously.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 30902-2014 be delivered?Answer: The full copy PDF of English version of GB/T 30902-2014 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 30902-2014_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 30902-2014_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 30902-2014 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. How to buy and download a true PDF of English version of GB/T 30902-2014?A step-by-step guide to download PDF of GB/T 30902-2014_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 30902-2014".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|