Anthropogenic or non-anthropogenic particulate matter: Which one is more dangerous and how to differentiate between the effects?
| Autor: | Lena Novack, Alexandra Shtein, Itai Kloog, Yorye Shenkar, Victor Novack, Batia Sarov |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Environmental Engineering Health Toxicology and Mutagenesis Nitrogen Dioxide chemistry.chemical_compound Air Pollution medicine Humans Environmental Chemistry Human Activities Nitrogen dioxide Particle Size Child Asthma Pollutant Air Pollutants Asthma exacerbations Mechanical impact Generalized additive model Public Health Environmental and Occupational Health General Medicine General Chemistry Particulates medicine.disease Pollution respiratory tract diseases Biphasic Pattern chemistry Anthropology Child Preschool Environmental chemistry Environmental science Female Particulate Matter Environmental Monitoring |
| Zdroj: | Chemosphere. 240:124954 |
| ISSN: | 0045-6535 |
| Popis: | The authors have observed that the function linking health outcomes with exposure to particulate-matter (PM) follows a biphasic pattern. It peaks around levels of PM10≤100 μg/m3, then weakens and rises again at PM10 levels in the range of hundreds. This could be due to a different nature of PM, the first peak reflecting a stronger anthropogenic and the second - weaker non-anthropogenic particles' effect. The current analysis is focused at the biphasic pattern on the association between PM levels with BG and asthma exacerbations. Pollutants were assessed by local monitoring stations and a satellitebased model. Local weekends/holidays were used to define nonanthropogenic levels of pollutants featured by lower Nitrogen Dioxide, the proxy for anthropogeneity. The association of PM10 with health outcomes within 24-48h lag was explored using spline functions of generalized additive models. Analysis of 546,420 BG tests (43,569 subjects) showed an almost linear association of PM10 with asthma with BG during the days with anthropogenic activity and no trend on other days. Analysis of asthmatic exacerbations within 1576 children showed no heterogeneity in association with PM10 by anthropogeneity levels, possibly indicating a mechanical impact on alveolar as the main trigger for exacerbations rather than PM10 chemical composition. |
| Databáze: | OpenAIRE |
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