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GB/T 37186-2018: Gas analysis -- Determination of sulfur dioxide and nitrogen oxides -- Ultraviolet differential optical absorption spectroscopy
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Gas analysis -- Determination of sulfur dioxide and nitrogen oxides -- Ultraviolet differential optical absorption spectroscopy
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GB/T 37186-2018
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Basic data | Standard ID | GB/T 37186-2018 (GB/T37186-2018) | | Description (Translated English) | Gas analysis -- Determination of sulfur dioxide and nitrogen oxides -- Ultraviolet differential optical absorption spectroscopy | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G86 | | Classification of International Standard | 71.040.40 | | Word Count Estimation | 10,146 | | Date of Issue | 2018-12-28 | | Date of Implementation | 2019-11-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37186-2018: Gas analysis -- Determination of sulfur dioxide and nitrogen oxides -- Ultraviolet differential optical absorption spectroscopy
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Gas analysis--Determination of sulfur dioxide and nitrogen oxides--Ultraviolet differential optical absorption spectroscopy
ICS 71.040.40
G86
National Standards of People's Republic of China
Gas analysis for determination of sulfur dioxide and nitrogen oxides
Ultraviolet differential absorption spectroscopy
Published on.2018-12-28
2019-11-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Petroleum and Chemical Industry Federation.
This standard is under the jurisdiction of the National Gas Standardization Technical Committee Gas Analysis Subcommittee (SAC/TC206/SC1).
This standard was drafted. Xi'an Dingyan Technology Co., Ltd., Institute of Chemistry, China Institute of Testing Technology, Southwest Chemical Research
Jiyuan Co., Ltd., Xinjiang Environmental Protection Science Research Institute, Sichuan Zhongjian Standards Technology Co., Ltd., Shaanxi Provincial Environmental Monitoring Center Station, Shaanxi Province
Institute of Metrology, Chengdu Environmental Monitoring Center, Chengdu Environmental Protection Research Institute, Sichuan University, Concentration Technology (Hangzhou)
Co., Ltd., Qingdao Laoshan Institute of Applied Technology.
The main drafters of this standard. Wang Weikang, Yu Haiyang, Shi Zhaoqi, Zhou Pengyun, Chen Yali, Zhou Xin, Yuan Xinjie, Li Zhiang, Huang Shenmin,
Ren Hongping, Gao Xuhui, Xing Lili, Tao Hongqun, Xie Xiang, Wang Yating, Ji Xuemei, Li Chenghui, Tian Yunfei, Lu Jieling, Huang Yangyu.
Gas analysis for determination of sulfur dioxide and nitrogen oxides
Ultraviolet differential absorption spectroscopy
1 Scope
This standard specifies methods for the determination of sulfur dioxide and nitrogen oxides in gases using ultraviolet differential absorption spectroscopy.
This standard applies to the determination of sulfur dioxide and nitrogen oxides in gases such as standard gases, industrial gases and ambient air. Sulfur dioxide determination
The range is from 0.2mg/m3 to 5000mg/m3, and the nitric oxide measurement range is from 0.3mg/m3 to 5000mg/m3.
The circumference is 2mg/m3~5000mg/m3.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 3723 General rules for sampling safety of industrial chemical products
GB/T 5274.1 Preparation of mixed gases for gas analysis - Part 1
GB/T 14850 Gas Analysis Vocabulary
GB/T 33360 Gas Analysis Technical Guide for Gas Purification of Trace Analysis
Technical requirements and testing methods for HJ76 fixed pollution source flue gas (SO2, NOx, particulate matter) continuous monitoring system
JJF1059.1 Measurement Uncertainty Evaluation and Representation
3 Terms and definitions
The following terms and definitions as defined in GB/T 14850 apply to this document.
3.1
Nitrogen oxides
An oxide of nitrogen in the form of nitrogen monoxide and nitrogen dioxide in a gas.
4 Principle
The sulfur dioxide and nitrogen oxides in the gas sample have a characteristic absorption spectrum in the ultraviolet region, and the ultraviolet light is sucked by the gas to be tested through the gas chamber.
The absorbed ultraviolet light enters the spectrometer. By processing the spectral information, the fast-changing part of the spectrum is separated and inverted
Calculated to obtain the content of sulfur dioxide and nitrogen oxides in the gas to be tested. See Appendix A for the specific working principle.
5 Instrument requirements
5.1 Select the measuring instrument within the measuring range according to the sulfur dioxide and nitrogen oxide content to be tested.
5.2 The detection limit of the instrument should meet the requirements of sulfur dioxide and nitrogen oxides to be tested.
5.3 Within the measuring range of the instrument, there should be a definite functional relationship between the response of the instrument and the content of sulphur dioxide and nitrogen oxides.
5.4 The instrument shall be qualified by metrological verification and within the validity period of the verification.
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