Student Research Reports
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Physico-chemical analysis and microplastic analysis in the Sava River
Organization(s):Srednja skola Petrinja
Country:Croatia
Student(s):Martina Marković, Sara Telbiz, Veronika Lasan,Marco Gelo, Sanja Kunštek, Karolina Šantić
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Teacher:Šeherzada Šaini Talić
Contributors:Petra Sekulić, Monika Puhalović
Report Type(s):Standard Research Report
Protocols:Conductivity, Dissolved Oxygen, Nitrates, pH, Water Temperature, Water Transparency
Language(s):Croatian
Date Submitted:10/23/2022
In this project, we investigated the growing problem of microplastics in our environment and
its impact on the environment. We wanted to compare the amount of microplastics in the Sava
River at the two locations. The aim is also to compare the amount of microplastics in the water
downstream of the city of Zagreb - at two stations - in Rugvica and Sisak. In order to analyze
the amount of microplastics, water samples were taken from the Sava River once a week in
the period from September to November 2021. The obtained results show the presence of
microplastics in the Sava River at both locations and confirm our hypothesis that more
microplastics are present. downstream station - in Sisak. Physico-chemical analysis of water
(pH, nitrates, nitrites and dissolved oxygen content) indicate decreased water quality of the
Sava in Rugvica and Sisak..