Assessing the oxidative potential of PAHs in ambient PM2.5 using the DTT consumption assay
| Autor: | Ivan A. Titaley, Paul Ha-Yeon Cheong, Courtney Roper, Staci L. Massey Simonich, Shelby E. Dorn, Kaylee Cayton, Allison Perez, Amber L. Kramer, Ronald P. Cook |
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| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Chemistry Fine particulate Health Toxicology and Mutagenesis Environmental chemistry General Medicine Oxidative phosphorylation 010501 environmental sciences Toxicology 01 natural sciences Pollution Organic content 0105 earth and related environmental sciences |
| Zdroj: | Environmental Pollution. 285:117411 |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/j.envpol.2021.117411 |
| Popis: | The oxidative potential (OP) of atmospheric fine particulate matter (PM2.5) has been linked to organic content, which includes polycyclic aromatic hydrocarbons (PAHs). The OP of 135 individual PAHs (including six subclasses) was measured using the dithiolthreitol (DTT) consumption assay. The DTT assay results were used to compute the concentration of each PAH needed to consume 50% of the DTT concentration in the assay (DTT50), and the reduction potential of the PAHs (ΔGrxn). Computed reduction potential results were found to match literature reduction potential values (r2 = 0.97), while DTT50 results had no correlations with the computed ΔGrxn values (r2 |
| Databáze: | OpenAIRE |
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