HONG KONG: Environmentalists on Wednesday expressed disappointment at new clean-air targets for Hong Kong, as research showed pollution-related illnesses killed more than 3,000 residents a year. In the face of mounting public criticism and allegations that it is soft on polluting industry, the government on Tuesday announced its first revision to air quality objectives (AQOs) in 25 years. But the tighter standards will not be implemented until 2014 and fall well short of World Health Organisation guidelines.