Occurrence and health risks of persistent organic pollutants in urban environments on the Tibetan Plateau: Insights from one-year monitoring of soil and air across four elevation-gradient county seats

• Yang DingChina University of Geosciences
• Zihao SongSichuan Normal University
• Yuening LiUniversity of Toronto
• Faqiang ZhanUniversity of Toronto
• Lei DuSichuan Normal University
• Hao Jie TangSichuan Normal University
• Huanfang HuangMinistry of Ecology and Environment
• Yuan ZhangChina University of Geosciences
• Shihua QiChina University of Geosciences