Using the US National Air Toxics Assessment to benchmark the USEtox inhalation-mediated carcinogenic impacts of air emissions
| العنوان: | Using the US National Air Toxics Assessment to benchmark the USEtox inhalation-mediated carcinogenic impacts of air emissions |
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| المؤلفون: | Matthew J. Eckelman, Kaixin Huang, Sarah A. Sanchez |
| المصدر: | The International Journal of Life Cycle Assessment. 26:1417-1430 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Box modeling, Pollutant, Benchmark (surveying), Environmental engineering, Statistical analysis, Air dispersion, Intake fraction, Air quality index, Hazardous air pollutants, General Environmental Science |
| الوصف: | Regional air quality models generate a high-resolution prediction of pollutant concentrations using sophisticated treatments of atmospheric fate and transport processes, speciation, and chemistry. By comparison, the multi-media box modeling underpinning the USEtox model is far simpler but allows for broad coverage of hazardous air pollutants. The purpose of the present article is to benchmark USEtox results via inhalation against a state-of-the-science regulatory model and investigate methodological areas that drive differences in results. The 2014 US National Air Toxics Assessment (NATA) used a linked dispersion-regional air quality model to evaluate human health risk from emissions of air toxics, a prescribed list of hazardous air pollutants that can cause cancer and severe human health effects. We compare the NATA results for human health risk from carcinogenic emissions to characterization factors generated by running the USEtox model on the same starting emissions inventory, namely, the US National Emissions Inventory (NEI), using the North American model parameterization. We have also decomposed characterization factors into intake fractions and effect factors. The separate comparison analysis allows us to trace the driving force for cancer risk differences. Statistical analysis is applied to determine the significance of pollutant characteristics in driving differences in results, including molecular weight, vapor pressure, octanol–water partitioning, compartment half-lives in air, and chemical composition. Comparative analysis shows a good concordance for carcinogenic impacts between the two models, with a factor of ~10 difference. The difference in effect factors is ~1.4, which is within an expected range. However, intake fraction is the major cause of cancer risk divergence. Intake fractions in NATA tend to have large variations due to the high-resolution air dispersion model and including secondary pollutants. NATA and USEtox results have consistent levels of statistical significance across the pollutant characteristics evaluated, with the greatest level of significance (p |
| تدمد: | 1614-7502 0948-3349 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::92eeecd7d2e1174807584057ae6a0e05 https://doi.org/10.1007/s11367-021-01918-w |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........92eeecd7d2e1174807584057ae6a0e05 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16147502 09483349 |
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