The Environmental Protection Department has started a consultancy study to identify more effective measures in enhancing indoor air quality, Permanent Secretary for the Environment, Transport & Works (Environment) Anissa Wong says.

The study will also look at the sources of indoor air pollution, such as building and furnishing materials, and garner information from overseas on the emission standards of these materials and suggest improvements.

"We will invite community views for the proposals of the study in formulating a long-term policy to control indoor air pollution," she said.

Speaking at the Indoor Air Quality Certificate Award Ceremony & Technical Seminar today, Ms Wong said good indoor air quality not only provides a pleasant living environment but also protects health.

She presented certificates to owners and property management companies joining the scheme, in recognition of their efforts in achieving good indoor air quality.