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论文类型：期刊论文

发表时间：2015-01-01

发表刊物：POLISH JOURNAL OF ENVIRONMENTAL STUDIES

收录刊物：SCIE

卷号：24

期号：4

页面范围：1723-1732

ISSN号：1230-1485

关键字：NO2; SO2; CO; NEQS-Pakistan; CNAAQS-China

摘要：Vehicle and industrial emissions are responsible for a considerable share of urban air pollution concentrations. We conducted a comparative study in Dalian, China and Faisalabad, Pakistan to reevaluate NO2, SO2, and CO concentrations. Our study was conducted over the course of one year at different stations in both cities, and measured values were compared with ambient air quality standards such as NEQS-Pakistan, NAAQS-USEPA, CNAAQS-China, and global standard WHO. The NO2 concentrations in Faisalabad varied from 185262 mu g/m(3), whereas it was in the range of 44-133 mu g/m(3) in Dalian. The SO2 concentration was found in the range of 66-190 mu g/m(3) and 56-128 mu g/m(3), while CO varied from 5.4-22.3 mg/m(3) and 0.3-2.8 mg/m(3), respectively, in Faisalabad and Dalian. The annual average NO2, SO2, and CO concentrations were below the permissible limits in Dalian; however, the measured values were considerably higher in Faisalabad. Our results are the first to compare air quality of two countries at different stations and highlight the possibility of reducing air pollution by comparing conditions.