2019年在北京大学环境科学于工程学院获得博士学位，并在北京大学从事博士后研究。2024年加入四川大学华西公共卫生学院。主要从事新污染物的环境行为、人群暴露风险及其健康效应的研究，相关研究成果在Environment International，Environmental Science & Technology，Science of the Total Environment等期刊发表SCI论文20余篇, 第一和通讯（含共同）15篇。作为负责人承担了包括国家重点研发计划课题等项目5项。担任多个国际期刊的特刊编辑和审稿人。

2019/07-2021/09 北京大学环境科学与工程学院 博士后

2021/09-2024/09 中央民族大学生命与环境科学学院 讲师、硕士研究生导师

2024/10-至今 四川大学华西公共卫生学院(华西第四医院) 特聘副研究员

1. 研究新污染物的人群暴露风险及其健康效应，测定环境介质与人体中新污染物的水平与分布，评价新污染物对人体健康的风险，并结合实验室模拟和模型计算的手段研究其在人体中的转运机制及其对人群的健康效应；

2. 研究卤代烃温室气体的大气环境行为及环境和健康影响，基于编制卤代烃温室气体排放清单，结合浓度监测和模型模拟手段研究卤代烃温室气体的大气化学过程，评估降解产物的环境和人群暴露风险。

1. 国家重点研发计划子课题，执行年限：2019-2022；批准批准经费113.34万；主持；

2. 国家自然科学基金面上项目，执行年限：2023-2026；批准经费18.0万；合作单位负责人。

1. Junyu Guo^*, Ying Zhou, Yifei Wang, Boya Zhang, Jianbo Zhang. Assessment of internal exposure to methylsiloxanes in children and associated non-dietary exposure risk. Environment International , 2021, 154, 106672.

2. Junyu Guo^*, Ying Zhou, Mei Sun, Jia’nan Cui, Boya Zhang, Jianbo Zhang*. Methylsiloxanes in plasma from potentially exposed populations and an assessment of the associated inhalation exposure risk. Environment International, 2020, 143, 105931.

3.Junyu Guo^*, Ying Zhou, Yifei Wang, Yuan Chen, Boya Zhang, Jianbo Zhang. Methylsiloxanes risk assessment combining external and internal exposure for college students. Science of the Total Environment, 2022, 845, 157379.

4.Yao Jiang, Junyu Guo^*, Ying Zhou, Kaixin Dong, Boya Zhang, Jiali Han, Yifei Wang, Yuan Chen. Assessment of the internal and external exposure risks to methylsiloxanes in communities near a petroleum refinery. Science of the Total Environment, 2023, 900, 166314.

5.Boya Zhang, Ying Zhou, Junyu Guo^*. Association of volatile methylsiloxanes exposure with non-alcoholic fatty liver disease among Chinese adults. Environmental Pollution, 2023, 334, 122128.

6. Yifei Wang, Ziyuan Wang, Mei Sun, Junyu Guo^*, Jianbo Zhang. Emissions, degradation and impact of HFO-1234ze from China PU foam industry. Science of the Total Environment, 2021, 780, 146631.

7. Ying Zhou, Junyu Guo^*, Zikuan Wang, Boya Zhang, Zhe Sun, Xiao Yun, Jianbo Zhang*. Levels and inhalation health risk of neonicotinoid insecticides in fine particulate matter (PM2.5) in urban and rural areas of China. Environment International, 2020, 142, 105822.

8. Mei Sun, Jia’nan Cui, Junyu Guo^*, Zihan Zhai, Peng Zuo, Jianbo Zhang*. Fluorochemicals biodegradation as a potential source of trifluoroacetic acid (TFA) to the environment. Chemosphere, 2020, 254, 126894.

9.Junyu Guo, Ying Zhou, Jia’nan Cui, Boya Zhang, Jianbo Zhang. Assessment of volatile methylsiloxanes in environmental matrices and human plasma. Science of the Total Environment, 2019, 668, 1175-1182.

10.Junyu Guo, Ying Zhou, Boya Zhang, Jianbo Zhang. Distribution and evaluation of the fate of cyclic volatile methyl siloxanes in the largest lake of southwest China. Science of the Total Environment, 2019, 657, 87-95.

11.Kaixin Dong, Ying Zhou, Junyu Guo^*, Yao Jiang, Boya Zhang, Yifei Wang, Yuan Chen. Cyclic methylsiloxanes in wastewater treatment plants: Occurrence, emissions, environmental distributions, and occupational exposure. Science of the Total Environment, 2024, 951, 175524.

12. Jia’nan Cui^†, Junyu Guo^†, Zihan Zhai, Jianbo Zhang. The contribution of fluoropolymer thermolysis to trifluoroacetic acid (TFA) in environmental media. Chemosphere, 2019, 222, 637-644. (^†co-first Author)

13.Junyu Guo, Zihan Zhai, Lei Wang, Ziyuan Wang, Jing Wu, Boya Zhang, Jianbo Zhang. Dynamic and thermodynamic mechanisms of TFA adsorption by particulate matter. Environmental Pollution, 2017, 225, 175-183.

14.Yao Jiang, Junyu Guo^*, Ying Zhou, Boya Zhang, Jianbo Zhang. Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China. International Journal of Environmental Research and Public Health, 2022, 19, 13869.