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GB/T 34162-2017: Natural gas -- Determination of arsenic content -- Potassium permanganate sample method
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| GB/T 34162-2017 | English | 179 |
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Natural gas -- Determination of arsenic content -- Potassium permanganate sample method
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GB/T 34162-2017
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Basic data | Standard ID | GB/T 34162-2017 (GB/T34162-2017) | | Description (Translated English) | Natural gas -- Determination of arsenic content -- Potassium permanganate sample method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E24 | | Word Count Estimation | 9,939 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-04-01 | | Issuing agency(ies) | 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 34162-2017: Natural gas -- Determination of arsenic content -- Potassium permanganate sample method
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Natural gas - Determination of arsenic content - Potassium permanganate sample method
ICS 75.060
E24
National Standards of People's Republic of China
Natural gas - Determination of arsenic content - Potassium permanganate sampling method
2017-09-07 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 principle 1
4 Reagents and materials 1
5 instrument 2
6 solution preparation 3
Sampling 3
8 Sample Processing and Determination 5
Calculate 5
10 precision 6
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents.
This standard is proposed and managed by the National Natural Gas Standardization Technical Committee (SAC/TC244).
This standard drafting unit. China Southwest Oil and Gas Field Branch of Natural Gas Research Institute, Oil Industry Natural Gas Quality Supervision and Inspection Center,
China Petroleum Exploration and Development Institute of Langfang branch, China's oil and gas quality control and energy measurement Key Laboratory.
The main drafters of this standard. Li Xiaohong, Luo Qin, Zhou Lin, Wang Yujie, Wang Shuying, Wang Hongli, Han Zhongxi, Chen Zhenghua.
Natural gas - Determination of arsenic content - Potassium permanganate sampling method
Warning --- This standard does not cover all the safety issues related to its application. Before using this standard, the user has the responsibility to formulate the corresponding
Safety and protection measures, and define the scope of its application.
1 Scope
This standard specifies the method for the determination of arsenic in natural gas by the absorption of potassium permanganate solution.
This standard applies to natural gas in the determination of arsenic content ≥ 0.05mg/m3 of natural gas samples.
This standard applies to the determination of arsenic content in natural gas with hydrogen sulfide content below 20mg/m3.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6682 analytical laboratory water specifications and test methods
GB/T 13609 gas sampling guidelines
3 principle
Natural gas is passed through an absorber containing a solution of potassium permanganate in the presence of a trialkyl arsenic compound [eg, trimethyl arsenic As (CH3) 3 or triethyl
Arsenic compounds in the form of arsenic As (C2H5) 3] are oxidized and absorbed. Absorption solution was stripped of hydrocarbons by vacuum stripping, filtered through filter paper and distilled
After washing the volume of water. Arsenic compounds generated in the solution of the inductively coupled plasma under the action of high temperature decomposition of excited atoms and form
The atoms and ions in the excited and excited states are unstable, and the electrons in the outer layer transition from the excited state to the low energy level, thus emitting the characteristic spectrum. by
After the grating is divided into light, the detector detects the light intensity at a specific wavelength, and the light intensity is proportional to the arsenic content. With a series of arsenic standard solution, mining
The standard curve method was used to determine the arsenic content. Get the arsenic content of natural gas by conversion.
4 Reagents and materials
4.1 Deionized water. Complies with the second class water GB/T 6682 specifications.
4.2 Arsenic standard solution National secondary or national standard substance, the mass concentration ρ (As) = 1mg/L ~ 1000mg/L, preferably used
Low concentrations of standard material to reduce the error caused by multi-level dilution.
4.3 concentrated nitric acid. Analytical pure.
4.4 potassium permanganate. Analytical purity.
4.5 Argon purity of not less than 99.999%.
4.6 needle valve.
4.7 Quantitative analysis of filter paper. 70mm or 90mm diameter.
4.8 Glass funnel .60mm or 90mm caliber.
4.9 latex tube, diameter 6mm, diameter 9mm, wall thickness 1.5mm.
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