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Classification of House Characteristics in a Boston Residential Nitrogen Dioxide Characterization Study
Author(s) -
Lee Kiyoung,
Yanagisawa Yukio,
Spengler John D.,
Fukumura Yuki,
Billick Irwin H.
Publication year - 1996
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 - 10.1111/j.1600-0668.1996.00008.x
Subject(s) - nitrogen dioxide , environmental science , characterization (materials science) , waste management , environmental chemistry , engineering , chemistry , materials science , nanotechnology , organic chemistry
Building characteristics of dwelling units in the metropolitan Boston area were statistically sorted on the basis of observed associations between the variables. First, associations between categories of house characteristics were determined by cross‐table analyses with a pair‐wise chi‐square test. The key characteristics, which have a significant relationship with many other characteristics, were used to classify the dwelling units into several groups. Two key characteristics, i.e. building type and size of building, were determined. Houses were divided into three groups: single‐unit building, small multi‐unit (2 to 4 units) building, and large multi‐unit (5+ units) building. The building type was not associated with indoor source, but was significantly associated with volume of dwelling unit, air exchange rate, and indoor and outdoor NO 2 concentrations. Lower airflow, smaller volume units, and higher outdoor NC 2 concentrations, in combination with other factors, result in higher indoor NO 2 concentrations in multi‐dwelling residential units (apartments and condominiums).