Factors associated with NO2 and NOX concentration gradients near a highway
نویسندگان
چکیده
منابع مشابه
Roadside increments in PM10, NOx and NO2 concentrations observed over 2 months at a major highway in New Zealand
Continuous and simultaneous observational particulate matter (measured as PM10), nitrogen dioxide (NO2) and oxides of nitrogen (NOx) data were captured at a kerbside site alongside a major highway in Auckland, New Zealand, and at a pair of setback sites within 250 m of the highway, day and night over 8 weeks. The three measurement sites were intended to allow emissions from the highway to be la...
متن کاملShort-term variation in near-highway air pollutant gradients on a winter morning.
Quantification of exposure to traffic-related air pollutants near highways is hampered by incomplete knowledge of the scales of temporal variation of pollutant gradients. The goal of this study was to characterize short-term temporal variation of vehicular pollutant gradients within 200-400 m of a major highway (>150 000 vehicles/d). Monitoring was done near Interstate 93 in Somerville (Massach...
متن کاملInteractive comment on “Short-term variation in near-highway air pollutant gradients on a winter
The primary weakness of the paper is having only a single day of sampling. The potential for a single day to have unusual meteorological or traffic characteristics is high, and without more details and more analysis of how representative this day was of typical, I feel it is incomplete and not ready for publishing. This is unfortunate because it seems to be a well-conducted study. Are more days...
متن کاملConcentration and size distribution of ultrafine particles near a major highway.
Motor vehicle emissions usually constitute the most significant source of ultrafine particles (diameter <0.1 microm) in an urban environment, yet little is known about the concentration and size distribution of ultrafine particles in the vicinity of major highways. In the present study, particle number concentration and size distribution in the size range from 6 to 220 nm were measured by a con...
متن کاملThe ratio of NO2/NOx directly emitted from vehicles
The use of tunnel concentration profile data to determine the ratio of NO2/NOx directly emitted from vehicles X. Yao, N. T. Lau, C. K. Chan, and M. Fang Institute for the Environment, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China Department of Chemical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China Recei...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Atmospheric Environment
سال: 2018
ISSN: 1352-2310
DOI: 10.1016/j.atmosenv.2017.11.026