SO2和NO混合标准气体在生态环境监测实验室比对中的应用

doi:10.3969/j.issn.1000-1158.2023.05.21

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Abstract Referring to the reference materials development technology, a patch of cylinders of SO2 and NO standard gas mixture in nitrogen was prepared by gravimetric method, and verified for applicability.The application of the gas mixture in ecological environment monitoring was investigated by inter-laboratory comparison.The results showed that the standard gas mixture was suitable to carry out inter-laboratory comparison and a good application effect was obtained in practical ecological environment monitoring inter-laboratory comparison.The laboratory comparison results show that the proportion of laboratories with satisfactory evaluation results for SO2 and NO are 79.4% and 81.4%, respectively, indicating that the overall detection ability and technical level of SO2 and NO in China are good.

Key words： metrology SO2 and NO standard gas mixture inter-laboratory comparison ecological environment monitoring robust statistics

Received: 10 March 2021 Published: 18 May 2023

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TB99

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	WU Xiao-feng
	WANG De-fa
	WU hai
	Lü Yi-bing

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WU Xiao-feng,WANG De-fa,WU hai, et al. The Application of Standard Gas Mixture of SO2 and NO in Ecological Environment Monitoring Inter-laboratory Comparison[J]. Acta Metrologica Sinica, 2023, 44(5): 810-817.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.05.21 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I5/810

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