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GB/T 36384-2018

Chinese Standard: 'GB/T 36384-2018'
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BASIC DATA
Standard ID GB/T 36384-2018 (GB/T36384-2018)
Description (Translated English) Determination of mercury in inorganic chemical product--Atomic fluorescence spectrometry
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G10
Classification of International Standard 71.060.01
Word Count Estimation 10,147
Date of Issue 2018-06-07
Date of Implementation 2019-01-01
Drafting Organization Hengyang Jianheng Industrial Co., Ltd., Shandong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Lanbao (Xiamen) Water Treatment Technology Co., Ltd., Beijing Haiguang Instrument Co., Ltd., Longyi Lilian Group Co., Ltd., Shenzhen Junnuo Testing Co., Ltd. Company, CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Zhejiang Shuizhiyin Environmental Protection Technology Co., Ltd.
Administrative Organization National Chemical Standardization Technical Committee Inorganic Chemical Subcommittee (SAC/TC 63/SC 1)
Proposing organization China Petroleum and Chemical Industry Federation
Issuing agency(ies) State Administration of Markets and China National Standardization Administration

GB/T 36384-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.060.01
G 10
Determination of Mercury in Inorganic Chemical
Product - Atomic Fluorescence Spectrometry
无机化工产品中汞的测定
原子荧光光谱法
ISSUED ON. JUNE 7, 2018
IMPLEMENTED ON. JANUARY 1, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 General Stipulations ... 5 
4 Principle ... 5 
5 Reagents or Materials ... 5 
6 Instruments and Equipment ... 6 
7 Test Procedures ... 6 
8 Instrument Reference Conditions ... 7 
9 Test Data Processing ... 7 
Appendix A (Informative) Sample Pre-treatment Method ... 9 
Appendix B (Informative) Mercury-containing Liquid Waste Disposal Method
... 10 
Determination of Mercury in Inorganic Chemical
Product - Atomic Fluorescence Spectrometry
Warning. personnel adopting this Standard shall have practical experience of
working at regular laboratories. This Standard does not point out all the possible
safety problems. Users shall undertake the responsibility of adopting
appropriate safety and health measures; guarantee the compliance with the
conditions stipulated by relevant national laws and regulations. Some reagents
adopted in the test method are toxic or corrosive, operators shall be cautious! If
they splash onto the skin, immediately use water to rinse them; medical
treatment shall be necessary under severe circumstances. The test method
adopts high-pressure argon cylinder, which shall be operated in accordance
with the safety procedure of high-pressure steel cylinder.
1 Scope
This Standard specifies the principle, reagents or materials, instruments and
equipment, test procedure, instrument reference conditions and test data processing
of determining mercury content in inorganic chemical products through atomic
fluorescence spectrometry.
This Standard is applicable to the determination of mercury content in inorganic
chemical products through atomic fluorescence spectrometer. In the test solution for
determination, mercury (Hg) mass concentration shall be within the range of 0.04 μg/L
~ 10 μg/L.
2 Normative References
The following documents are indispensable to the application of this Standard. In terms
of references with a specified date, only versions with a specified date are applicable
to this Standard. The latest version (including all the modifications) of references
without a specified date is applicable to this Standard.
GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods
HG/T 3696.2 Inorganic Chemicals for Industrial Use - Preparations of Standard
and Reagent Solutions for Chemical Analysis - Part 2. Preparations of Standard
Solutions for Impurity
HG/T 3696.3 Inorganic Chemicals for Industrial Use - Preparations of Standard
and Reagent Solutions for Chemical Analysis - Part 3. Preparations of Reagent
keep away from light.
5.8 Mercury standard using solution. 1 mL of solution contains 0.05 μg of mercury (Hg);
transfer 0.50 mL of mercury standard intermediate solution, place it in a 100 mL
volumetric flask. Use potassium dichromate-nitric acid solution to dilute to the volume,
then, mix it up. This solution shall be prepared right before usage.
6 Instruments and Equipment
Atomic fluorescence spectrometer. equipped with mercury hollow cathode lamp.
7 Test Procedures
7.1 Pre-cleaning of Glass Instruments
Before usage, glass vessels and PTFE digestion inner tank, which are about to be
used in test, shall be soaked in nitric acid solution for 24 h. Then, use water to rinse
them.
7.2 Preparation of Test Solutions
Test solutions shall be prepared in accordance with the stipulation in relevant product
standards.
7.3 Sample Pre-treatment Method
Sample pre-treatment method shall refer to Appendix A.
7.4 Standard Curve Drawing
Respectively transfer 0.00 mL, 2.00 mL, 4.00 mL, 6.00 mL and 8.00 mL of mercury
standard using solution; place them into 5 100 mL volumetric flasks. Respectively add
5 mL of hydrochloric acid; dilute to the constant volume, then, mix it up. In this series
of solutions, mercury (Hg) mass concentration shall respectively be 0.00 μg/L, 1.00
μg/L, 2.00 μg/L, 3.00 μg/L and 4.00 μg/L. Standard solutions can also be prepared in
accordance with the practically determined mercury content.
After the instrument is stabilized, use potassium borohydride (or sodium borohydride)
solution as the reducing agent; take hydrochloric acid solution as the carrier solution.
Under the optimal working conditions of the instrument, determine the fluorescence
value of the standard solution. Take the measured fluorescence value as the y-
coordinate; take the corresponding mercury mass concentration (μg/L) as the x-
coordinate; draw a standard curve.
7.5 Test
Appendix A
(Informative)
Sample Pre-treatment Method
A.1 Open Container Digestion Method
Heat up and digest samples and reagents on a heating plate or electric furnace through
an open container.
A.2 Sealed Container Digestion Method
In a sealed container (generally, PTFE m......
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