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Chinese National Standard Category: Analysis methods for toxic substances in atmosphere |
English Title: | Air quality; Determination of nitrogen oxides in ambient air; Griess-saltzman method |
Chinese Title: | 空气质量 氮氧化物的测定 盐酸萘乙二胺比色法 |
Standard No.: | GB 8969-1988 |
Category No.: | Z15 |
Issued by: | MEP |
Issued on: | 1988-03-26 |
Implemented on: | 1988-8-1 |
Status: | superseded |
Superseded by: | HJ 479-2009 Ambient air-Determination of nitrogen oxides-N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometric method |
Superseded on: | 2009-11-1 |
Abolished on: | |
Superseding: | |
Word Count: | 1500 words |
Similar Standards: | GB 9801-1988 GB/T 15438-1995 DB37/T 4078-2020 DB37/T 4434-2021 DB37/T 4432-2021 DB37/T 4433-2021 DB37/T 4378-2021 DB37/T 3922-2020 DB37/T 3786-2019 DB37/T 3458-2018 DB37/T 3457-2018 DB31/T 1089-2018 HJ 696-2014 HJ 687-2014 HJ 77.1-2008 GB/T 22105.3-2008 GB/T 22105.2-2008 HJ/T 374-2007 GB/T 15439-1995 GB/T 15432-1995 |
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