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Standard Insuued on: 1988-03

GB 8969-1988    Air quality; Determination of nitrogen oxides in ambient air; Griess-saltzman method
空气质量 氮氧化物的测定 盐酸萘乙二胺比色法
Category No.:GB Valid Status:superseded
Issued Organization:MEP Issued Date:1988-03-26
Implemented Date:1988-8-1 Abolished Date:
Superseded Standard.:HJ 479-2009 Ambient air-Determination of nitrogen oxides-N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometric method
Superseded Date:2009-11-1
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LS/T 3504-1988   JJG 557-1988   JJG 556-1988   LS/T 3504-1988   GB 9024-1988   GB/T 8910.2-1988   GB/T 8910.3-1988   GB/T 8910.1-1988   GB/T 6809.3-1989   YB 2430-1988   SJ 2907-1987   GB/T 8931-1988   GB 8924-1988   GB/T 8927-1988   GB/T 8929-1988   GB/T 8928-1988   JJG 546-1988   JJG 549-1988   JJG 552-1988   JJG 553-1988  

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