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Smoking: Air quality survey shows little progress
April 30, 2002PUBS and bars are failing to protect staff and non-smokers from the dangers of tobacco smoke, according to a new study of indoor air quality by researchers at Manchester Metropolitan University.
Jo Carrington, a PhD researcher, studied the effectiveness of health and safety measures in 60 watering holes and found that ventilation did not appear to reduce the environmental tobacco smoke compounds measured.
Neither did no-smoking areas have a significant enough impact on improving air quality to call them `healthy`.
In the first study of its kind in the UK, air pollution recorders were left in city bars and pubs in Manchester; behind bars, in no-smoking areas and in smoking areas.
Behind the bar where staff (many of them non-smokers) spend most of their time, the equipment recorded levels of tobacco smoke almost identical to those in the public smoking areas - just 1.6% difference.
In non-smoking areas airborne particles was just 27% lower than in the smoking areas, although nicotine levels fell by 67% in non-smoking areas. On average there was six times more respirable particulates in pubs and bars than in the street.
The study found ventilation in pubs was less effective than previously thought.
Mechanical ventilation and extractor fans - even sophisticated extractor systems - were found to have little effect on environmental smoke compounds measured. Around a fifth of ventilators were found to be not working or switched off.
On the plus side, she suggests that more targeted forms of ventilation - air curtains, point source extraction (ie ashtrays with suction) could be more effective. While she remarked that some chains had taken more decisive action. Wetherspoons, for instance, bans smoking at the bar.
The findings are bad news for The Charter Group*, a committee of government officials and industry representatives, which has sought to find a solution to passive smoking hazards without recourse to a ban.**
Jo Carrington, who conducted four years of research at Manchester :Metropolitan University`s acclaimed Atmospheric Research and Information Centre (ARIC), said: "The findings are disappointing because they indicate that measures taken to date have failed to protect non-smokers and particularly employees from the dangers of passive smoking."
Ms Carrington`s findings are touched on in the Greater London Assembly`s Smoking in Public Places Investigative Committee report, published last week.
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Manchester Metropolitan University
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