Underestimated activity-based microplastic intake under scenariospecific exposures  

作　　者：Kai Liu Qingqing Li Anthony LAndrady Xiaohui Wang Yinan He Daoji Li 

机构地区：[1]State Key Laboratory of Estuarine and Coastal Research,East China Normal University,500 Dongchuan Road,Shanghai,200062,China [2]Department of Chemical and Biomolecular Engineering,North Carolina State University,Raleigh,NC,27695,USA [3]Plastic Marine Debris Research Center,East China Normal University,500 Dongchuan Road,Shanghai,200241,China [4]Regional Training and Research Center on Plastic Marine Debris and Microplastics,IOC-UNESCO,500 Dongchuan Road,Shanghai,200241,China

出　　处：《Environmental Science and Ecotechnology》2024年第2期124-136,共13页环境科学与生态技术（英文）

基　　金：supported by the National Key Research and Development Program of China(2022YFC3105900);National Natural Science Foundation of China(42206167);Shanghai Sailing Program(22YF1410800);China Postdoctoral Science Foundation(2021M701213);the State Key Laboratory of Estuarine and Coastal Research of China(2022RCDW02);Sino-Norwegian cooperation project on capacity building for reducing plastic and microplastic pollution(SINOPLAST),ECNU“Future Scientist”incubation program(WLKXJ202004)and 111 Project from Ministry of Education,China(BP0820020).

摘　　要：Despite increasing alarms over the health impacts of microplastics(MPs)due to their detection in human organs and feces,precise exposure evaluations remain scarce.To comprehend their risks,there is a distinct need to prioritize quantitive estimates in MP exposome,particularly at the environmentallyrealistic level.Here we used a method rooted in real-world MP measurements and activity patterns to determine the daily intake of MPs through inhalation and from ground dust/soil ingestion.We found that nearly 80%of this intake comes from residential sectors,with activity intensity and behavioral types significantly affecting the human MP burden.The data showed a peak in MP exposure for those aged 18-64.When compared to dietary MP intake sources like seafood,salt,and water,we identified a previously underestimated exposure from inhalation and dust/soil ingestion,emphasizing the need for more realistic evaluations that incorporate activity factors.This discovery raises questions about the accuracy of past studies and underscores MP's potential health risks.Moreover,our time-based simulations revealed increased MP intake during the COVID-19 lockdown due to more surface dust ingestion,shedding light on how global health crises may inadvertently elevate MP exposure risks.

关 键 词：Microplastics Activity factors Inhalation and ingestion Simulation Exposure estimate 

分 类 号：X5[环境科学与工程—环境工程]