1. As the capital city in the northern region of Vietnam, Hanoi absorbs heavy industries such as manufacture, construction, and chemical industries. The industrial sector is partly responsible for a major share of the greenhouse gas emissions and has also contributed to a serious degree of pollution. The industrial activities have emitted considerable amounts of ambient air pollutants. Industrial emissions included oxides of sulfur, nitrogen oxides (NOx), and dust particles, which may easily penetrate into the atmosphere to cause respiratory diseases and heart attacks-like ailments among men.
2. Hanoi has an extensive road network, allowing for public and private road-transit. The older vehicles, which are gas-guzzlers, produce CO, NOx, and PM, contributing to grave air pollution. Diesel buses and trains produce plumes of smoke and large amounts of particulate emissions from their engines, such as a range of hazardous substances. In addition, dust and emissions from construction machinery and equipment, as well as ports in the city's outskirts, would also not help ease air pollution. |