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Standard Test Methods for Continuous Measurement of Oxides of Nitrogen in the Ambient or Workplace Atmosphere by the Chemiluminescent Method
Automaticky přeložený název:
Standardní zkušební metody pro kontinuální měření oxidů dusíku ve vnějším nebo pracoviště atmosféře chemiluminiscenční metodou
NORMA vydána dne 1.4.2012
Označení normy: ASTM D3824-12
Poznámka: NEPLATNÁ
Datum vydání normy: 1.4.2012
Kód zboží: NS-24993
Počet stran: 12
Přibližná hmotnost: 36 g (0.08 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
ambient atmospheres, analysis, chemiluminescence reaction, nitric oxide, nitrogen dioxide, oxides of nitrogen, sampling, workplace atmospheres, Air analysis, Air monitoring, Ambient air/atmospheric analysis, Automated procedures--atmospheric analysis, Chemiluminescence detection, Light transmission and reflection, Nitrogen oxides, Workplace air/atmospheres, ICS Number Code 13.040.30 (Workplace atmospheres)
Significance and Use | ||||||||||||||||||
Most oxides of nitrogen are formed during high-temperature combustion. The Environmental Protection Agency (EPA) has set primary and secondary air quality standards for NO2 that are designed to protect the public health and the public welfare (40 CFR, Part 50). Oxides of nitrogen are generated by many industrial processes that can result in employee exposures. These are regulated by the Occupational Safety and Health Administration (OSHA) which has promulgated exposure limits for the industrial working environment (29 CFR, Part 1910). These methods have been found satisfactory for measuring oxides of nitrogen in the ambient and workplace atmosphere over the ranges shown in 1.1. |
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1. Scope | ||||||||||||||||||
1.1 These test methods cover procedures
for the continuous determination of total nitrogen dioxide
(NO2) and nitric oxide (NO) as NOx, or nitric oxide (NO) alone or nitrogen
dioxide (NO2) alone, in the ranges shown in the
following table:
Note 1—Approximate range: 25°C and 101.3 kPa (1 atm). 1.2 The test methods are based on the chemiluminescent reaction between nitric oxide and ozone. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9. |
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2. Referenced Documents | ||||||||||||||||||
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