Normative Document Details
Reference: NP 4342:1997
Description:
Year: 1997
Normative document status: Em Vigor
Technical committee: CT 071 - QUALIDADE DO AR
Edition number: 0
Edition date: 01/11/1997
Official publish date: 05/12/2024
Anullment date:
ICS:
Notes:
Valores apresentados S/IVA
Norm in Portuguese
Qualidade do ar - Determinação de dióxido de azoto no ar - Método espectrofotométrico com arsenito de sódio
Norm in English
Air quality. Determination of nitrogen dioxide in the atmosphere.
Spectrophotometric method with sodium arsenite
Norm in French
Qualité de l"air. Détermination de dioxide de azote dans l"air.
Method spectrophotometrique à l"arsenite de sodium
Norm in German