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Author

Arjun K. Venkatesan

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Open access Oct 2026

Hydrophobic Ion Pairing with Cationic Surfactant Enhances the Octanol–Water Distribution Coefficient of PFAS

Cationic additives are increasingly used to enhance per- and polyfluoroalkyl substances (PFAS) removal, particularly for short-chain PFAS; however, the mechanisms underlying this enhancement remain poorly understood. Here, we quantitatively evaluate how hydrophobic ion pairing (HIP) with cationic additives alters PFA...

Farhaneh Maghsoudi, Arjun K. Venkatesan · 0 citations
Open access Oct 2026

Per- and Polyfluoroalkyl Substances (PFAS) Cytotoxicity and Genotoxicity in HepG2 Human Hepatoma Cells

Per- and polyfluoroalkyl substances (PFASs) commonly occur as complex mixtures, yet the relationships among PFAS structure, cytotoxicity, and DNA strand-break responses remain incompletely resolved. We evaluated 11 PFASs selected to span environmentally prevalent and regulatory-relevant perfluorocarboxylic acids (PFC...

Barbara Wehle, J. Chang, Si-Wei Gu et al. · 0 citations
Open access Aug 2026

Hydrophobic Ion Pairing with Cationic Surfactant Modifies Surface Activity and Colloidal Behavior of PFAS

Quaternary ammonium compounds (QACs) are increasingly used to enhance the removal of per- and polyfluoroalkyl substances (PFAS), particularly short-chain compounds, through hydrophobic ion pairing (HIP). Here, we investigated how HIP with cetyltrimethylammonium chloride (CTAC) influences the interfacial and colloidal b...

B. Pandey, Ligaya Manalastas, Afaq Ahmad et al. · 1 citation
Review Open access Jun 2026

Occurrence of per- and polyfluoroalkyl substances (PFAS) and their precursors in biosolids across 15 U.S. states

The US Environmental Protection Agency (EPA) draft sewage sludge risk assessment indicates that land application of biosolids containing as little as 1 ng/g of perfluorooctanoate (PFOA) or perfluorooctane sulfonate (PFOS) may exceed human health risk thresholds. This study provides updated measurements of per- and poly...

Xia-Yan Ye, A. Maroli, Santhoshi Chitthaluri et al. · 1 citation

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