Indoor particulate matter exposure and correlation of PM2.5 with lung efficacy and SpO2 level of Dhaka City Dwellers

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Air Quality Atmosphere and Health Pub Date : 2024-05-22 DOI:10.1007/s11869-024-01586-3

Samiha Nahian, Shatabdi Roy, Tasrina Rabia Choudhury, Bilkis Ara Begum, Abdus Salam

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Abstract

This study investigated indoor exposure of particulate matter (PM) at six residential homes in Dhaka, Bangladesh, to assess the degradation of indoor air quality (IAQ) by PM_1.0, PM_2.5 and PM₁₀, as well as correlate indoor PM_2.5 with occupants’ lung efficacy and blood oxygen saturation (SpO₂). Concentrations of indoor and outdoor PM were monitored individually at day and night using IGERESS Air Quality Monitoring Detector. Mean concentration of indoor PM_1.0, PM_2.5 and PM₁₀ were 91.7 ± 47.2, 121 ± 62.4, and 140 ± 72.0 µgm^− 3, respectively. Indoor PM of all size ranges at night were found to be 1.69 times higher than their corresponding daytime concentration. Mean I/O ratio (I/O_day= 0.95 and I/O_night= 0.93) and strong positive correlation (R²_day= 0.90 and R²_night = 0.80) between indoor and outdoor PM confirmed infiltration of polluted outdoor air inside the households. Indoor sources had 11% and 14% contribution to indoor PM during day and night, respectively. For Cantonment site, PM measurement was conducted during haze and non- haze weather. Haze- time PM concentration was 1.55 to 1.86 times greater than the non- haze period, which indicated that despite the same indoor environment, infiltrated outdoor PM during haze deteriorated IAQ. The average peak flow rate and SpO₂ of 30 inhabitants in six sampling households were 353 L min^− 1 and 98.7%, respectively. Peak flow rate showed strong, negative correlation (R² = 0.82) with indoor PM_2.5 concentration, which implied that inhalation of excess PM_2.5 was probably responsible for the reduced lung function of the residents. However, no association could be established between SpO₂ and indoor PM_2.5 concentration. These outcomes indicated severely compromised IAQ in urban Dhaka households, so necessary measures are required to reduce the extent of indoor air pollution.

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室内颗粒物暴露以及 PM2.5 与达卡市居民肺功效和 SpO2 水平的相关性

本研究调查了孟加拉国达卡六所住宅的颗粒物（PM）室内暴露情况，以评估 PM1.0、PM2.5 和 PM10 对室内空气质量（IAQ）的影响，以及室内 PM2.5 与居住者肺功效和血氧饱和度（SpO2）的相关性。使用 IGERESS 空气质量监测探测器分别对室内和室外的 PM 浓度进行了昼夜监测。室内 PM1.0、PM2.5 和 PM10 的平均浓度分别为 91.7 ± 47.2、121 ± 62.4 和 140 ± 72.0 µgm-3。夜间室内各种粒径范围的可吸入颗粒物浓度是白天相应浓度的 1.69 倍。室内和室外可吸入颗粒物之间的平均 I/O 比率（I/Oday= 0.95 和 I/Onight= 0.93）和强正相关性（R²day= 0.90 和 R2night=0.80）证实了室外污染空气渗入住户室内。昼间和夜间的室内可吸入颗粒物分别有 11% 和 14% 来自室内。在广埠屯地区，在雾霾和非雾霾天气都进行了可吸入颗粒物的测量。雾霾天气时的可吸入颗粒物浓度是非雾霾天气时的 1.55 至 1.86 倍，这表明尽管室内环境相同，但雾霾天气时渗入室外的可吸入颗粒物会恶化室内空气质量。6 个采样家庭中 30 名居民的平均峰值流速和 SpO2 分别为 353 升/分钟和 98.7%。峰值流速与室内 PM2.5 浓度呈强负相关（R² = 0.82），这意味着吸入过量的 PM2.5 可能是导致居民肺功能下降的原因。然而，SpO2 与室内 PM2.5 浓度之间没有关联。这些结果表明，达卡城市家庭的室内空气质量受到严重影响，因此需要采取必要措施降低室内空气污染程度。

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来源期刊

Air Quality Atmosphere and Health ENVIRONMENTAL SCIENCES-

CiteScore

8.80

自引率

2.00%

发文量

146

审稿时长

>12 weeks

期刊介绍： Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health. It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes. International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals. Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements. This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.