Jian Zhen Yu

A Quasi-Michaelis–Menten Mechanism Explains the Nonlinear Relationship between Transition Metals and PM2.5 Oxidative Potential Measured by the Dithiothreitol (DTT) Assay

Abstract Oxidative potential (OP), defined as the capacity of particulate matter (PM) to consume antioxidants and/or generate reactive oxygen species, is increasingly used as a metric for assessing PM toxicity. However, the concentration–response relationship between PM component...

Photochemical Impactsfrom Resolving Isomers and InterferenceBiases in PTR-ToF-MS Measurements of Atmospheric VOCs

Abstract While proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) is widely used for ambient volatile organic compounds (VOCs) quantification, its accuracy is limited by isomeric speciation and ionization byproducts. Here, gas chromatography (GC) coupled with...