SIST ISO 7996:1996 PDF
Ambient air -- Determination of the mass concentration of nitrogen oxides -- Chemiluminescence method
Ambient air -- Determination of the mass concentration of nitrogen oxides -- Chemiluminescence method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 1 августа 1996 г.
- ICS:
- 13.040.20
- Технический комитет:
- KAZ - Air quality
The procedure is applicable to mass concentration of nitrogen monoxide present up to approximately 12,5 mg/m3 of nitrogen dioxide up to approximately 19 mg/m3 at 25 °C and 101,3 kPa.
Abstract
Overview
ISO 7996:1985 specifies a for determining the mass concentration of in ambient air. The procedure covers measurement of and at standard conditions (25 °C, 101.3 kPa) and is applicable up to approximately and . The method is widely used in to provide sensitive, real‑time NOx data.
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