03387nas|a2200421 i 4500 20260818085050.0 041199s1999 th uu m rtt 00| a1eng d .b11765355 AIT Thesis no. EV-99-37 Nguyen Le Ninh Contribution of motorcycle emissions to the air pollution burden of Ho Chi Minh City, Viet Nam Bangkok : Asian Institute of Technology, 1999 96 leaves Thesis ; no. EV-99-37 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1999 Rapid increase of motorcycles, the main private means of transportation in HCMC, is one of major reasons for road congestion and traffic jams. The registered motorcycle number is more than 85% of total vehicle population and it is estimated that about 91 % of travel in the city are by motorcycles. Most motorcycles are four-stroke, which are not equipped with air pollution control devices. In this study motorcycle emission inventories have been made for HCMC to estimate air pollutant loads. The pollutant loads from motorcycle emissions is about 200 tons of TSP; 152,800 tons of CO; 12,600 tons ofHCs; 2,200 tons ofNOx; 3,200 tons of S02 and 40 tons of lead, per year. It has been estimated that the vehicle emissions contribute up to 21 % of CO and 30 % of NOx to the total pollutant loads from the transport and industrial sectors. The assessment of air quality status in HCMC is based on measurement results of existing air quality monitoring networks and Vietnamese environ.mental standards. Although the concentrations of air pollutants now meet the allowable Vietnamese standard for ambient air quality except TSP, they are expected to rapidly increase unless proper measures in environmental management strategies are implemented. Management measures can be incorporated into an integrated air quality and transport management. Motorcycles Vietnam Ho Chi Minh Waste gases Vietnam Ho Chi Minh Nguyen, Thi Kim Oanh, Chairperson Shrestha, Ram M., Examination Committee Dahl-Madsen, Karl Iver, Examination committee Swedish International Development Agency (Sida), Scholarship donor Asian Institute of Technology. Thesis ; no. EV-99-37 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B12119 .b11765355 mnait y 240420 0 991104 m a y 0 mnait mnait mnarc 20 40 Barcode : 30050120652531 CREATED : 1998-01-06 RECORD # : i12159360 LPATRON : 1019143 LCHKIN : 2006-11-03 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 11 TOT RENEW : 4 Barcode : 30050120652556 CREATED : 1998-01-06 RECORD # : i12159372 LPATRON : 1019614 LCHKIN : 2007-06-12 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 3 TOT CHKOUT : 9 TOT RENEW : 5 Barcode : 30050160077375 CREATED : 2016-05-23 RECORD # : i12988388 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 22978 22978 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. EV-99-37 30050120652531 2026-08-18 08:50:50 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. EV-99-37 30050120652556 2026-08-18 08:50:50 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. EV-99-37 30050160077375 2026-08-18 08:50:50 2026-08-18 40