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Nitrous Acid Interference with Passive NO 2 Measurement Methods and the Impact on Indoor NO 2 Data
Author(s) -
SPICER CHESTER W.,
BILLICK IRWIN H.,
YANAGISAWA YUKIO
Publication year - 2001
Publication title -
indoor air
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.387
H-Index - 99
eISSN - 1600-0668
pISSN - 0905-6947
DOI - 10.1034/j.1600-0668.2001.011003156.x
Subject(s) - nitrous acid , interference (communication) , environmental science , combustion , sampling (signal processing) , computer science , chemistry , telecommunications , inorganic chemistry , channel (broadcasting) , organic chemistry , detector
Recent research has demonstrated that nitrous acid (HONO) is produced in indoor environments by NO2 reacting with interior surfaces, and is also emitted directly by some combustion sources. We have recently characterized the interference by HONO to NO2 measurements made by several commonly used continuous NO2 monitors. This paper reports on the effect of HONO on NO2 measurements made by passive sampling devices. The objective of this study was to evaluate this interference, and the accuracy and precision of passive samplers used for indoor NO2 measurements. We report that HONO interferes quantitatively with three of the four NO2 passive samplers tested.