Bahcebasi Talat, Kandis Hayati, Baltaci Davut, Kara Ismail Hamdi
Medical Faculty, Public Health Department, Duzce University, Düzce, Turkey.
Toxicol Ind Health. 2011 Apr;27(3):195-204. doi: 10.1177/0748233710383888. Epub 2010 Sep 21.
The aim of this study was to evaluate indoor air quality and factors affecting expired carbon monoxide (CO) levels in a coffeehouse environment. This cross-sectional study was conducted at 16 randomly selected coffeehouses in Duzce, Turkey, during November 2007 to March 2008. A total of 547 people, average age 46.72 ± 17.03 (19-82) years, participated. The selected coffeehouses were divided into four groups: (1) smoking, (2) nonsmoking, (3) old-style and (iv) new-style coffeehouses. Prior to entering the coffeehouse, exhaled CO levels in smokers (mean 21.17 ± 6.73 parts per million [ppm]) were significantly higher than those for nonsmokers (6.51 ± 4.56 ppm; p < 0.001). Measurements taken after 2 hours in the coffeehouse also showed significantly higher CO concentrations for smokers (22.72 ± 5.31 ppm), compared to nonsmokers (6.51 ± 4.56 ppm; p < 0.001). It was determined that CO levels inside coffee shops were above the WHO guidelines. Exhaled CO levels in nonsmokers are influenced by the ambient CO levels as a result of the use of cigarettes in coffeehouses in addition to the structure of coffeehouses.
本研究的目的是评估咖啡馆环境中的室内空气质量以及影响呼出一氧化碳（CO）水平的因素。这项横断面研究于2007年11月至2008年3月在土耳其杜兹采随机选取的16家咖啡馆进行。共有547人参与，平均年龄为46.72±17.03（19 - 82）岁。所选咖啡馆分为四组：（1）吸烟区，（2）非吸烟区，（3）老式咖啡馆和（4）新式咖啡馆。在进入咖啡馆之前，吸烟者呼出的CO水平（平均21.17±6.73百万分比浓度[ppm]）显著高于非吸烟者（6.51±4.56 ppm；p < 0.001）。在咖啡馆内2小时后进行的测量也显示，吸烟者的CO浓度（22.72±5.31 ppm）显著高于非吸烟者（6.51±4.56 ppm；p < 0.001）。已确定咖啡馆内的CO水平高于世界卫生组织的指导标准。除了咖啡馆的结构外，由于咖啡馆内有人吸烟，非吸烟者呼出的CO水平还受到环境CO水平的影响。
