Answer Happy

Below is the annual trend of SO2 emission in Hong Kong (unit in ton). Please explain why there was an increase in SO2 emission in 2003-2004. (4 marks) 二氧化硫 SO2 200,000 180,000 160,000 140,000 120,000 100,000 80,000 60,000 40,000 20,000 0 1996 2002 排放量必响 Emission tonnes) I 1990 1992 1994 2000 2004 2006 1998 年份 Year 1. The Hong Kong government claimed that the emissions of nitrogen oxides (NOx) and volatile organic compounds (VOCs) have been decreased since 1997, why is 03 pollution more serious in recent years given that NOx and VOCs are Os precursors? (3 marks) Below is a sampling train: why are the pump and sample flow controller placed behind the gas analyzer? (3 marks) Gas Analyzer Exhaust w 1 Rain Sample Sample Controller PUMP 2. Incineration is often used for the control of gaseous pollutants. What are the main factors affecting the combustion of gaseous pollutants in an incinerator? (3 marks)