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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Policy & Risk Sign in to save

Atmospheric deposition of microplastics in shiraz, iran

Zenodo (CERN European Organization for Nuclear Research) 2024 Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Atefeh Esfandiari, Nafiseh Khodabakhshloo, Atefeh Esfandiari, Nafiseh Khodabakhshloo, Andrew Turner Nafiseh Khodabakhshloo, Zeinab Mokhtarzadeh, Sajjad Abbasi, Reza Dehbandi, Atefeh Esfandiari, Atefeh Esfandiari, Zeinab Mokhtarzadeh, Andrew Turner Reza Dehbandi, Nafiseh Khodabakhshloo, Reza Dehbandi, Reza Dehbandi, Reza Dehbandi, Farnaz Ahmadi, Sajjad Abbasi, Sajjad Abbasi, Sajjad Abbasi, Farnaz Ahmadi, Reza Dehbandi, Sajjad Abbasi, Arya Vazirzadeh, Reza Dehbandi, Sajjad Abbasi, Andrew Turner Andrew Turner Andrew Turner Farnaz Ahmadi, Shaqayeq Rahnama, Reza Dehbandi, Nafiseh Khodabakhshloo, Farnaz Ahmadi, Andrew Turner Haniye Pourmahmood, Haniye Pourmahmood, Farnaz Ahmadi, Farnaz Ahmadi, Shaqayeq Rahnama, Andrew Turner Farnaz Ahmadi, Reza Dehbandi, Nafiseh Khodabakhshloo, Reza Dehbandi, Reza Dehbandi, Haniye Pourmahmood, Haniye Pourmahmood, Farnaz Ahmadi, Farnaz Ahmadi, Farnaz Ahmadi, Nafiseh Khodabakhshloo, Nafiseh Khodabakhshloo, Sajjad Abbasi, Reza Dehbandi, Andrew Turner Reza Dehbandi, Sajjad Abbasi, Nafiseh Khodabakhshloo, Nafiseh Khodabakhshloo, Nafiseh Khodabakhshloo, Sajjad Abbasi, Haniye Pourmahmood, Nafiseh Khodabakhshloo, Nafiseh Khodabakhshloo, Nafiseh Khodabakhshloo, Reza Dehbandi, Reza Dehbandi, Haniye Pourmahmood, Haniye Pourmahmood, Reza Dehbandi, Reza Dehbandi, Reza Dehbandi, Haniye Pourmahmood, Haniye Pourmahmood, Atefeh Esfandiari, Haniye Pourmahmood, Atefeh Esfandiari, Reza Dehbandi, Zeinab Mokhtarzadeh, Atefeh Esfandiari, Zeinab Mokhtarzadeh, Reza Dehbandi, Atefeh Esfandiari, Atefeh Esfandiari, Atefeh Esfandiari, Reza Dehbandi, Reza Dehbandi, Zeinab Mokhtarzadeh, Reza Dehbandi, Zeinab Mokhtarzadeh, Shaqayeq Rahnama, Zeinab Mokhtarzadeh, Zeinab Mokhtarzadeh, Reza Dehbandi, Shaqayeq Rahnama, Shaqayeq Rahnama, Shaqayeq Rahnama, Reza Dehbandi, Andrew Turner Shaqayeq Rahnama, Arya Vazirzadeh, Arya Vazirzadeh, Arya Vazirzadeh, Andrew Turner, Andrew Turner Andrew Turner Andrew Turner, Andrew Turner

Summary

Researchers measured atmospheric microplastic deposition during successive dry and rainy events over eight consecutive days at six sites in Shiraz, Iran, finding a progressive increase in microplastic abundance during dry periods and examining rainfall's role in scavenging airborne particles.

Polymers
PE PET PS PVC

The atmosphere plays a critical role in the regional and global transportation and redistribution of microplastics (MPs). However, the significance of rainfall and its means of scavenging MPs are not well understood. In this study, MP deposition was determined during successive dry and rainy events over eight consecutive days in the Shiraz region of Iran. Flux magnitudes and temporal distributions at six sites within and outside the city (including a remote, non-urbanised location) were similar and revealed a progressive increase in MP abundance and deposition during dry periods (up to about 50 MP m−2 h−1) and subsequent relatively rapid wet deposition (washout) by incipient rainfall (peaking at about 130 MP m−2 h−1). Wet deposition of MPs progressively decreased throughout the rainfall event, but with evidence of secondary peaks, before atmospheric accumulation and dry deposition increased during the next dry event and the cycle continued. Dry and wet deposition were dominated by fibres (that included polyester-polyethylene terephthalate, polystyrene, polyvinyl chloride and polyethylene) but the evolution of deposition did not appear to be associated with changes in MP size. These observations indicate that, as with other airborne pollutants, initial rainfall is an efficient scavenger of atmospheric MPs. Along with variations in methodology, this effect may contribute to the wide variation in MP fluxes reported in the literature. Also see: https://micro2024.sciencesconf.org/559764/document

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