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首页> 外文会议>Joint annual meeting of the International Society of Exposure Science and the International Society for Environmental Epidemiology >Modeling the Impact of Indoor Air Purifier on Air Pollution Exposure Reduction and Associated Health Benefits in Urban Delhi Households
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Modeling the Impact of Indoor Air Purifier on Air Pollution Exposure Reduction and Associated Health Benefits in Urban Delhi Households

机译：模拟室内空气净化器对德里市区城市居民减少空气污染暴露和相关健康益处的影响

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Background: Households in urban Delhi experience elevated level of ambient and indoor air pollution. Indoor air filtration is recommended as a measure to improve indoor air quality, yet few studies have examined the effectiveness of air filtration devices in urban settings in low- and middle-income countries. This study aims to quantify the impact of household air purifier on indoor air quality and its health implications. Methods: We used CONTAM 3.2 (National Institute of Standard Technology) to simulate the indoor personal PM2.5 exposure of the primary cook over 12 months in a typical one-bedroom apartment in urban Delhi. We conducted a factorial design to model PM2.5 exposure as a function of air filter type (low, medium efficiency and HEPA filter), use schedule (8 hour, 15 hour and all day) and presence of another smoker. Based on the simulated exposure reduction, we employed the Household Air Pollution Intervention Tool (HAPIT) to estimate the corresponding health benefits on major conditions. All model inputs were extracted from governmental/scientific literature. Results: The modeled annual personal PM2.5 exposure without air purifier was 111 μg/m3 and 145 μg/m3 for households without and with a smoker, respectively. The highest exposure reduction occurred in scenarios with all-day use of air purifier equipped with HEPA filter. The annual personal PM2.5 level was reduced to 33 and 34 μg/m3 for households without and with a smoker. These PM2.5 reductions represent 48 and 43 deaths averted per 100,000 population per year. Simulated annual personal exposures to PM2.5 from 8-hour and 15-hour use of air purifier all exceeded the WHO interim guideline at 35 μg/m3, mainly due to the infiltration of ambient air pollution. Conclusions: Our simulation shows that consistent use of household air purifier can reduce indoor air pollution in a city like Delhi. The reduced personal indoor air pollution exposure from air filtration can result in significant health benefits.
机译：背景：德里市区的家庭环境和室内空气污染水平较高。建议使用室内空气过滤作为改善室内空气质量的一种措施，但很少有研究检查空气过滤装置在中低收入国家城市环境中的有效性。这项研究旨在量化家用空气净化器对室内空气质量的影响及其健康意义。方法：我们使用CONTAM 3.2（美国国家标准技术研究所）模拟了德里市区一间典型的一居室公寓在12个月内初级厨师在室内个人PM2.5暴露量。我们进行了析因设计，以模拟PM2.5暴露量与空气过滤器类型（低，中效率和HEPA过滤器），使用时间表（8小时，15小时和整天）以及是否有其他吸烟者的关系。在模拟的减少接触量的基础上，我们使用了家庭空气污染干预工具（HAPIT）来估算主要条件下相应的健康益处。所有模型输入均来自政府/科学文献。结果：对于没有吸烟者和有吸烟者的家庭，不使用空气净化器的年度个人PM2.5暴露模型分别为111μg/ m3和145μg/ m3。在全天使用配备HEPA过滤器的空气净化器的情况下，最大程度地减少了暴露。对于没有吸烟者和有吸烟者的家庭，年度个人PM2.5水平降低到33和34μg/ m3。 PM2.5的减少代表每年每100,000人口避免了48和43例死亡。使用空气净化器8小时和15小时模拟得出的个人年度PM2.5暴露量均超过了WHO临时准则的35μg/ m3，这主要是由于周围空气污染的渗入。结论：我们的模拟表明，持续使用家用空气净化器可以减少像德里这样的城市的室内空气污染。减少空气过滤对室内空气造成的个人污染可以带来重大的健康益处。

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