Evaluation of NO2 Chemiluminescence Monitors
نویسندگان
چکیده
1 Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Bldg. 54, 77 Massachusetts Ave, Cambridge, MA 02139, USA 2 Aerodyne Research Inc., 45 Manning Road, Billerica MA 01821-3876, USA 3 Laboratory for Atmospheric Research, Department of Civil and Environmental Engineering, Washington State University, 101 Sload Hall, Spokane Street, Pullman, WA 99164-2910, USA 4 University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, AR 72204-1099, USA 5 Centro de Ciencias de la Atmysfera, Universidad Nacional Autónoma de México, Mexico, D.F., Mexico 6 Centro Nacional de Investigacion y Capacitacion Ambiental-INE, Av. Periférico 5000, Col. Insurgentes Cuicuilco, CP 04530, Mexico, D.F., Mexico 7 Gobierno del Distrito Federal, Agricultura 21, Piso 1, Col. Escandon, Del. M. Hidalgo, CP 11800, Mexico, D. F., Mexico
منابع مشابه
Evaluation of nitrogen dioxide chemiluminescence monitors in a polluted urban environment
Data from a recent field campaign in Mexico City are used to evaluate the performance of the EPA Federal Reference Method for monitoring the ambient concentrations of NO2. Measurements of NO2 from standard chemiluminescence monitors equipped with molybdenum oxide converters are compared with those from Tunable Infrared Laser Differential Absorption Spectroscopy (TILDAS) and Differential Optical...
متن کاملField method comparison between passive air samplers and continuous monitors for Vocs and NO2 in El Paso, Texas.
This study evaluates the performance of Model 3300 Ogawa Passive Nitrogen Dioxide (NO2) Samplers and 3M 3520 Organic Vapor Monitors (OVMs) by comparing integrated passive sampling concentrations to averaged hourly NO2 and volatile organic compound (VOC) measurements at two sites in El Paso, TX. Sampling periods were three time intervals (3-day weekend, 4-day weekday, and 7-day weekly) for three...
متن کاملImproving spatial nitrogen dioxide prediction using diffusion tubes: A case study in West Central Scotland
It has been well documented that air pollution adversely affects health, and epidemiological pollution-health studies utilise pollution data from automatic monitors. However, these automatic monitors are small in number and hence spatially sparse, which does not allow an accurate representation of the spatial variation in pollution concentrations required for these epidemiological health studie...
متن کاملEffects of reducing reagents and temperature on conversion of nitrite and nitrate to nitric oxide and detection of NO by chemiluminescence.
To measure the concentration of nitrites and nitrates by chemiluminescence, we examined the efficiency of five reducing agents [V(III), Mo(VI) + Fe(II), NaI, Ti(III), and Cr(III)] to reduce nitrite (NO2-) and (or) nitrate (NO3-) to nitric oxide (NO). The effect of each reducing agent on the conversion of different amounts of NO2- and (or) NO3- (100-500 pmol, representing concentrations of 0.4 t...
متن کاملHigh-sensitivity instrument for measuring atmospheric NO2.
We report on the development of a high-sensitivity detection system for measuring atmospheric NO2 using a laser-induced fluorescence (LIF) technique around 440 nm. A tunable broad-band optical parametric oscillator laser pumped by the third harmonic of a Nd:YAG laser is used as a fluorescence excitation source. The laser wavelength is tuned at peak and bottom wavelengths around 440 nm alternati...
متن کامل