Exposure to fine particulate matter (PM2.5) from non-tobacco sources in homes within high-income countries: a systematic review
AbstractThe health impacts associated with exposure to elevated concentrations of fine particulate matter (PM2.5) are well recognised. There is a substantial number of studies characterising PM2.5 concentrations outdoors, as well as in homes within low- and middle-income countries. In high-income countries (HICs), there is a sizeable literature on indoor PM2.5 relating to smoking, but the evidence on exposure to PM2.5 generated from non-tobacco sources in homes is sparse. This is especially relevant as people living in HICs spend the majority of their time at home, and in the northern hemisphere households often have low a...
Source: Air Quality, Atmosphere and Health - November 28, 2022 Category: Environmental Health Source Type: research
Generating 250 m-resolution regional NO2 concentration products first from MODIS retrievals using extreme gradient boosting
This study proposes an approach to produce the 250 m surface NO2 concentrations using an ensemble learning model based on MODIS-derived surface PM2.5 concentrations. It is the first time to produce such high spatial resolution of NO2 products from the satellite retrievals with high frequency. The approach was tested over the Yangtze River Delta (YRD) urban agglomeration of China. The model has high accuracy on instantaneous NO2 estimations with a cross-validated coefficient of determination of 0.82, a root-mean-square error of 8.5 µg/m3, and a mean prediction error of 6.2 µg/m3, and a mean relative prediction error...
Source: Air Quality, Atmosphere and Health - November 19, 2022 Category: Environmental Health Source Type: research
Evaluation of the annual economic costs associated with PM2.5-based health damage —a case study in Ho Chi Minh City, Vietnam
Abstract Pollution-related air quality deterioration has affected public health in many large cities worldwide, including Ho Chi Minh city (HCMC) in Vietnam. The health effects in this area attributed to fine particulate matter (PM2.5) account for 81.31% of all major air pollutant-related deaths. Over the past two decades, epidemiological studies have demonstrated that both short- and long-term PM2.5 pollution exposures are associated with increased mortality and morbidity. However, research on the economic damages caused by this type of pollution is lacking. The goal of this study was to assess PM2.5-related human healt...
Source: Air Quality, Atmosphere and Health - November 12, 2022 Category: Environmental Health Source Type: research
Response of tropospheric nitrogen dioxide variations based on Major Function Oriented Zones over eastern China during 2006 –2021
AbstractThe response of tropospheric column nitrogen dioxide (NO2) variations under the background of Major Function Oriented Zones (MFOZs) over eastern China is analyzed in this study. There is an increasing and then decreasing trend in the average annual value of NO2 in eastern China, with the highest values in 2011 and the lowest in 2017. As serious polluted regions, three regions (Jing-Jin-Ji, Yangtze River Delta, and Pearl River Delta) all show decrease trend, the average concentration of NO2 in the Jing-Jin-Ji region is the highest, and the decrease rate is also the highest. By analyzing the variation characteristics...
Source: Air Quality, Atmosphere and Health - November 10, 2022 Category: Environmental Health Source Type: research
Indoor air quality study in four Malaysian hospitals for centralized and non-centralized ACMV systems
This study aimed to investigate indoor air quality (IAQ) and thermal comfort in the four Malaysian hospitals with the aid of subjective assessment and objective measurements. The hospitals were selected randomly from the pool of government registry by considering the type of air-conditioning and mechanical ventilation (ACMV) systems installed in them. Thermal comfort parameters such as indoor air temperature, relative humidity, and air velocity, as well as IAQ indicators, for example, carbon dioxide (CO2), carbon monoxide (CO), formaldehyde (HCHO), and total volatile organic compounds (TVOC), were measured in the present s...
Source: Air Quality, Atmosphere and Health - November 10, 2022 Category: Environmental Health Source Type: research
