Aiyuan Jia, Yongsheng Zhao, Zhi Liu, Fangyuan Zhang, Can Shia, Zhisheng Liu, Mei Hong(通讯作者), Yangxue Li(通讯作者). New insight into enhanced transport of multi-component porous covalent-organic polymers with alkyl chains as injection agents for levofloxacin removal in saturated sand columns[J]