GB/T 37186-2018 English PDF

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GB/T 37186-2018: Gas analysis -- Determination of sulfur dioxide and nitrogen oxides -- Ultraviolet differential optical absorption spectroscopy
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37186-2018	199	Add to Cart	3 days	Gas analysis -- Determination of sulfur dioxide and nitrogen oxides -- Ultraviolet differential optical absorption spectroscopy	Valid

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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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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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