Altitude-dependent gaseous emissions from freight trucks along the China-Pakistan Economic Corridor in Pakistan

ABSTRACT: Recent increases in emissions from freight transport have caused strong concerns about air quality in Pakistan, following the rapid development of projects related to the China-Pakistan Economic Corridor (CPEC). This study reported the first measurements of on-road truck emissions in Pakistan and investigated their dependence on altitude along CPEC routes. Emissions from 70 trucks were measured on CPEC highways located in Islamabad (540 m above sea level), Sost (2800 m above sea level), and at the Khunjerab Pass (4693 m above sea level). Calculated emission factors for carbon monoxide, hydrocarbons, and nitrogen oxides from heavy-duty trucks in Islamabad were 12.94 ± 1.46, 15.21 ± 1.67, and 10.69 ± 1.34 g km−1 (95% confidence level), respectively, for pre-Pak-II trucks, and 12.75 ± 2.80, 1

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PROVIDER: S-EPMC9720242 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature