At midnight Friday television advertisements for cigarettes will be banned in Hong Kong in the latest move to combat the growth of smoking in Asia.

The bans, which are expected to trim 8 percent to 10 percent of the advertising revenues at the British colony's two television stations, come nearly 30 years after studies first linked smoking to lung cancer.But tobacco firms will still be able to reach the colony's television audience with ads on programs in Macao, a Portuguese enclave about 40 miles west of Hong Kong.