Monitoring ketamine use and evaluating its persistence across 106 wastewater treatment plants in Australia - Zeyang Zhao; Rory Verhagen; Jake W. O’Brien; Benjamin J. Tscharke; Jinglong Li; Zhe Wang; Qiuda Zheng; Emma L. Keller; Jochen F. Mueller; Phong K. Thai (Journal of Water Process Engineering, 2026)