Analysis of the influence of exogenous factors on indoor air quality in residential buildings

Frontiers in Built Environment, Journal Year: 2025, Volume and Issue: 11

Published: Feb. 26, 2025

Indoor air pollution presents a significant global health risk, yet the influence of outdoor and meteorological factors on indoor quality is not well understood. This study investigates these impacts in 88 naturally ventilated households across urban, suburban, industrial areas, with no smoking or cooking. Air measurements were continuously recorded for 24 h day over six consecutive days during wet season. The findings reveal that PM 2.5 levels consistently exceeded levels, weekday concentrations higher than weekends. Specifically, urban averaged 34.8 μg/m³ outdoors 31 indoors weekdays, compared to 33.1 31.5 CO 2 notably higher, peaking at 525.7 ppm areas weekdays 576.9 weekends, driven by increased occupancy poor ventilation, particularly suburban (880.4 807.5 weekends). average indoor/outdoor (I/O) ratio was 0.94, indicating are about 94% signifying infiltration pollution. In contrast, I/O 1.47, suggesting 47% due limited ventilation sources. concludes significantly affect Kigali, Rwanda, highlighting need effective management both sources conditions.

Language: Английский

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Tracking Africa's trajectory toward sustainability: An assessment of environmental and socioeconomic impacts

Sustainable Production and Consumption, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Low-Cost PM_2.5 Sensor Performance Characteristics against Meteorological Influence in Sub-Saharan Africa: Evidence from the Air Sensor Evaluation and Training Facility for the West Africa Project

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Fine particulate matter (PM2.5) pollution represents a major environmental health risk in Africa. The use of low-cost sensors (LCS) for air quality monitoring policy and civic engagement sub-Saharan Africa (SSA) has become paramount, as access to traditional reference-grade instruments is still sparse. Yet, studies pertaining sensor performance under SSA's meteorological conditions diverse emission sources are limited. Hence, we tested eight PM2.5 on the market from different manufacturers containing Plantower PMS, Alphasense OPC-N3, AVO-Sensor by collocating them with federal equivalent method Teledyne T640 ascertain data accuracy, reliability, responsiveness during wet dry periods. After 6 months collocation, concentrations LCS showed low intrasensor variability both periods, but high intersensor T640. A strong relationship existed between T640, average coefficient determination (R2) values 0.7 (range: 05–0.9) 0.8 (0.64–0.97) respectively. Larger errors were also associated than period, mean absolute error root squared error, respectively, 4.5 5.3 times higher period. Uncertainties large observed measured levels that more common period typically characterized long-range transport pollution. results show season significantly affects care must be taken deployment usage SSA, regular maintenance, particularly season. Strong collaborative efforts governmental agencies, industries, civil society needed come up an effective framework their application.

Language: Английский

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Exposure patterns of PM2.5 and CO concentrations in residential and commercial buildings: factors influencing indoor air quality

Air Quality Atmosphere & Health, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Language: Английский

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Air Pollution News Sentiment: Seasonal Trends' Relation with PM10 Levels

Published: Jan. 1, 2024

Language: Английский

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Assessment of Chemical Composition and Health Implications Associated with PM ₁₀ Exposure: A Comparative Study of an Urban Road Intersection and a Wood-Burning Vicinity

Environmental Forensics, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 15

Published: Dec. 1, 2024

The chemical composition and potential health risks linked to human exposure ambient PM10 particles were assessed at the Winneba highway intersection (WHI) Apam, a wood-burning neighbourhood in Ghana's Central Region. particulates collected using Gent sampler equipped with Gast pump stacked filter unit. sampling was done three times week continuously from July 2022 June 2023, for 24 h. A smoke stain reflectometer an Ag-anode X-ray tube spectrometer used analyse samples black carbon elemental contents, respectively. hazards associated trace elements evaluated US EPA risk assessment model. study's findings indicated that amounts of Cr (250.5 ng/m3) Ni (358.1 detected Apam surpassed threshold limits, as did values discovered WHI, which 78.63 178.2 ng/m3, PCA produced WHI by soil dust, vehicle exhaust, brake tyre wear, two-stroke engines, whereas biomass burning, exhaust emissions contributed Apam. non-carcinogenic children's metals PM10via pathways higher compared adults. overall cancer carcinogenic ingestion dermal contact more than 10−4, suggesting high risks: 9.49 × 10−4–5.20 10−3 children 9.03 10−4–5.26 Reducing concerns it poses requires use clean fuel adoption environmentally friendly transportation.

Language: Английский

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Media Sentiment on Air Pollution: Seasonal Trends in Relation to PM10 Levels

Sustainability, Journal Year: 2024, Volume and Issue: 16(15), P. 6513 - 6513

Published: July 30, 2024

Air pollution remains a major public health concern globally, especially in the Western Balkan countries facing severe air quality problems. This study investigates relationship between quality, news media sentiment, and discourse Macedonia over ten-year period (2014–2023). We employed sentiment analysis to examine emotional tone of coverage related pollution, topic modeling uncover recurring themes within articles. Our revealed distinct seasonal pattern, with negative sentiments peaking during winter months when PM10 levels were highest. finding aligns increased reliance on polluting fuels for heating. Interestingly, despite stable number neutral articles, rise positive-sentiment articles suggests potential decrease or effectiveness new government policies. identified topics like concerns specific cities, unease regarding factories, ongoing scrutiny Emerging included impact COVID-19 pandemic surrounding heating practices, growing about waste management. contributes deeper understanding complex interplay data, discourse, framing, offering valuable insights policymakers outlets Macedonia.

Language: Английский

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Indoor Air Quality in the West African Region – A Review

Environmental Studies Journal, Journal Year: 2024, Volume and Issue: 3(1), P. 85 - 93

Published: Dec. 30, 2024

Indoor air quality (IAQ) is a significant public health concern, particularly in developing region like West Africa where reliance on biomass fuels for cooking contributes to high levels of indoor pollutants. This review examines existing literature IAQ across African countries, highlighting both urban and rural studies. A comprehensive search was conducted using PubMed, Google Scholar databases regional journals. Studies published between 2014 2024 focusing fifteen countries were included. Data extracted by pollutant levels, source, location outcomes. concentrations PM2.5 households often exceeded WHO guidelines with the highest reported Cote d’Ivoire at 121±12 µg/m³, Senegal 87±10 Ghana 38.1±18.9 Cape Verde 28.5±20.8 Burkina Faso 26.55±9.95 Mali 20±7 least Gambia 4.4 µg/m³. The primary source pollution wood which highly polluting, its use most prevalent (89.4%) (87.6%), (1.9%) Togo (1.2-1.4%). exposure from polluting strongly associated morbidity mortality lower respiratory infection, chronic obstructive pulmonary disease, stroke, ischaemic heart lung cancer, type 2 diabetes. In conclusion, remains concern Africa. emphasizes urgent need policy interventions initiatives improve through sustainable practices including promoting cleaner technologies, reviewing enforcing policies, awareness campaigns.

Language: Английский

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