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首页> 外文会议>Annual conference of the International Society of Exposure Science >Contribution of Secondhand Smoke and Multiple Outdoor Sources in ?Residential Indoor Polycyclic Aromatic Hydrocarbon Level
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Contribution of Secondhand Smoke and Multiple Outdoor Sources in ?Residential Indoor Polycyclic Aromatic Hydrocarbon Level

机译：室内二手多环芳烃水平对二手烟和多种室外污染源的贡献

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Objectives: Extent to which multiple sources contribute to indoor concentrations of individual PAH species is little known within intensive coal-burning regions. Here, we examined the contribution of indoor and outdoor sources on individual species of the airborne PAHs. Methods:lndoor and outdoor concentration of nine common PAHs - benz[a]anthracene, chrysene/isochrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3-c,d]pyrene, dibenz[a,h]anthracene, benzo[g,h,i]perylene and pyrene were monitored in 75 homes for 48 hour period across a two-year period in Krakow, Poland. Due to no known indoor sources for pyrene, we used pyrene as a tracer for infiltration of outdoor air. Indoor concentrations of eight PAHs were partitioned to indoor and outdoor source contributions. Results: Relative importance of season-related outdoor sources and secondhand smoke differed for the nine PAH species. In homes reporting ＞5 hours of daily secondhand smoke, median concentrations of benzo[g,h,i]perylene, benzo[a]pyrene, D[a,h]A, and indeno(1,2,3-c,d)pyrene were ＞ 1.7 times higher than outdoors, while median I/O ratios for benz[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, and chrysene were ＜ 1.5. Using pyrene as a tracer, the outdoor sources contributed to indoor air concentration of benz[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, and chrysene more substantially (i.e. 2- to 7-times) than did the indoor sources. In contrast, in homes reporting cigarette smoking, the tobacco and outdoor related sources contributed equally for benzo[g,h,i]perylene, benzo[a]pyrene, D[a,h]A, and indeno(1,2,3-c,d)pyrene. Conclusion:lndoor concentration of benz[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, and chrysene were predominantly determined by infiltrated outdoor PAHs. In contrast, benzo[g,h,i]perylene, benzo[a]pyrene, D[a,h]A, and indeno(1,2,3-c,d)pyrene - species of highest carcinogenic and mutagenic potencies - were contributed not only by the outdoor sources, but also by secondhand smoke.
机译：目标：在密集的燃煤地区，鲜有多种来源导致单个PAH种类在室内的浓度升高。在这里，我们研究了室内和室外来源对机载多环芳烃的单个物种的贡献。方法：室内和室外九种常见多环芳烃的浓度-苯并[a]蒽，//异,、苯并[b]荧蒽，苯并[k]荧蒽，苯并[a] py，茚并[1,2,3-c，d在波兰的克拉科夫，为期两年，在75个家庭中监测了py，二苯并[a，h]蒽，苯并[g，h，i] per和pyr。由于no的室内来源未知，我们使用pyr作为示踪剂渗入室外空气。将室内8种PAHs的浓度划分为室内和室外污染源。结果：9种PAH物种的季节相关户外来源和二手烟的相对重要性有所不同。在报告每天二手烟＞ 5小时的家庭中，苯并[g，h，i] per，苯并[a] py，D [a，h] A和茚并（1,2,3-c，d py比室外高1.7倍以上，而苯并[a]蒽，苯并[b]荧蒽，苯并[k]荧蒽和的中位数I / O比＜1.5。使用pyr作为示踪剂，室外源比室内对苯并[a]蒽，苯并[b]荧蒽，苯并[k]荧蒽和an的室内空气浓度的影响更大（2至7倍）资料来源。相反，在报告吸烟的家庭中，烟草和户外相关来源对苯并[g，h，i] per，苯并[a] py，D [a，h] A和茚并（1,2,3）的贡献均相等。 -c，d）.。结论：主要通过渗入的室外PAHs测定苯并[a​​]蒽，苯并[b]荧蒽，苯并[k]荧蒽和的室内浓度。相比之下，苯并[g，h，i] ylene，苯并[a] D，D [a，h] A和茚并（1,2,3-c，d）re-致癌和诱变潜能最高的物种-不仅来自室外，而且还来自二手烟。

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