主要研究领域：
污水流行病学
微量污染物排放、环境行为、归趋
污染物暴露与健康风险评价
代表性研究项目：
国家自然科学基金青年科学基金项目，41701543，典型城市生活污水和地表水中常见新精神活性物质的时空演变特征，2018.01-2019.12，主持
国家自然科学基金面上项目，41877508，基于污水流行病学的全国重点城市医疗用抗生素使用水平研究，2019.01-2023.12，主要参加人
国家自然科学基金面上项目，41371442，典型违禁药物在城市生活污水和地表水中残留浓度的分析和污水流行病学研究，2014/01-2017/12，主要参加人
国家自然科学基金面上项目，41471258，土壤石油烃传质过程和界面萃取修复机理，2015/01-2018/12，参加
代表性论文：
Peng Du, Kaiyang Li, Jing Li, Zeqiong Xu, Xiaofang Fu, Jun Yang, Huafang Zhang, Xiqing Li*. Methamphetamine and ketamine use in major Chinese cities, a nationwide reconnaissance through sewage-based epidemiology, Water Research, 2015, 84: 76-84.
Peng Du, Phong K. Thai, Ya Bai, Zilei Zhou, Zeqiong Xu, Xuan Zhang, Jing Wang, Congbin Zhang, Fanghua Hao, Xiqing Li*, Monitoring consumption of methadone and heroin in major Chinese cities by wastewater-based epidemiology, Drug and Alcohol Dependence, 2019, 205: 107532.
Peng Du, Zilei Zhou, Hongmei Huang, Sheng Han, Zeqiong Xu, Ya Bai, Xiqing Li*. Estimating population exposure to phthalate esters in major Chinese cities through wastewater-based epidemiology, Science of the Total Environment, 2018, 643: 1602-1609.
Peng Du, Zilei Zhou, Ya Bai, Zeqiong Xu, Tingting Gao, Xiaofang Fu, Xiqing Li*. Estimating heroin abuse in major Chinese cities through wastewater-based epidemiology, Science of the Total Environment, 2017, 605-606: 158-165.
Congcong Wang, Linlin Hou, Jing Li, Zeqiong Xu, Tingting Gao, Jun Yang, Huafang Zhang, Xiqing Li*, Peng Du*, Occurrence of diazepam and its metabolites in wastewater and surface waters in Beijing, Environmental Science and Pollution Research, 2017, 24: 15379-15389.
Xiqing Li*, Peng Du, Wei Zhang, Lei Zhang*, Wastewater: a new resource for the war against illicit drugs, Current Opinion in Environmental Science & Health, 2019, 9: 73-76.
Maodian Liu, Peng Du, Chenghao Yu, Yipeng He, Haoran Zhang, Xuejun Sun, Huiming Lin, Yao Luo, Han Xie, Junming Guo, Yindong Tong, Qianggong Zhang, Long Chen, Wei Zhang, Xiqing Li, Xuejun Wang*, Increases of Total Mercury and Methylmercury Releases from Municipal Sewage into Environment in China and Implications, Environmental Science & Technology, 2018, 52: 124-134.
Zeqiong Xu, Peng Du, Kaiyang Li, Tingting Gao, Zhenglu Wang, Xiaofang Fu, Xiqing Li*, Tracing methamphetamine and amphetamine sources in wastewater and receiving waters via concentration and enantiomeric profiling, Science of the Total Environment, 2017, 601-602: 159-166.
Tingting Gao, Peng Du, Zeqiong Xu, Xiqing Li*, Occurrence of new psychoactive substances in wastewater of major Chinese cities, Science of the Total Environment, 2017, 575: 963-969.
Kaiyang Li, Peng Du, Zeqiong Xu, Tingting Gao, Xiqing Li*, Occurrence of illicit drugs in surface waters in China, Environmental Pollution, 2016, 213: 395-402.
Kang Mao, Zhugeng Yang, Peng Du, Zeqiong Xu, Zhenglu Wang, Xiqing Li*, G-quadruplex-hemin DNAzyme molecular beacon probe for the detection of methamphetamine, RSC Advances, 2016, 6: 62754-72759.
Jianfa Gao, Jack O'Brien, Peng Du, Xiqing Li, Christoph Ort, Jochen F. Mueller, Phong K. Thai*, Measuring selected PPCPs in wastewater to estimate the population in different cities in China, Science of the Total Environment, 2016, 568: 164-170.
Jing Li, Linlin Hou, Peng Du, Jun Yang, Kaiyang Li, Zeqiong Xu, Congcong Wang, Huafang Zhang, Xiqing Li*, Estimation of amphetamine and methamphetamine uses in Beijing through sewage-based analysis, Science of the Total Environment, 2014, 490: 724-732.
Usman Khan, Alexander L.N. van Nuijs, Jing Li, Walid Maho, Peng Du, Kaiyang Li, Linlin Hou, Jiying Zhang, Xiangzhou Meng, Xiqing Li*, Adrian Covaci*, Application of a sewage-based approach to assess the use of ten illicit drugs in four Chinese megacities, Science of the Total Environment, 2014, 487: 710-721.
著作：
Xiqing Li, Peng Du, Wei Zhang, Application of Wastewater-Based Epidemiology in China—From Wastewater Monitoring to Drug Control Efforts, Wastewater-Based Epidemiology: Estimation of Community Consumption of Drugs and Diets, American Chemical Society, Washington, D.C., 2019.