نوع مقاله : مقاله کامل علمی - پژوهشی
نویسندگان
1 گرگان
2 دانشگاه علوم کشاورزی و منابع طبیعی گرگان
3 دانشگاه گنبدکاووس، دانشکده کشاورزی و منابع طبیعی، گروه شیلات، گنبدکاووس، ایران
4 شهید بهشتی
5 هیات علمی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Gorgan Bay is the only bay at the southeast of the Caspian Sea. Plastics are a group of synthetic or semi-synthetic materials obtained by the polymerization process. Due to the fact that plastics are non-degradable materials and have different types of pollutants, after entering the marine ecosystem, they are degraded and turned into microplastics particles. The presence of microplastic particles in the marine ecosystem causes many adverse effects and environmental and health problems, and over time, by entering the food chain, it damages the health of living organisms, especially humans. The aim of this study was to determine the type and amount of plastic input of carp in the northern, southern and western stations of Gorgan Bay in the winter of 2020 to the spring of 2021. The tissue examination of fish showed that there are various colors in the microplastics, the predominant color of most microplastics was black, which includes 50% of the samples, and the rest of the colors were in the order of their highest frequency: brown, gray, white and red. The maximum and minimum microplastic size were 0.03 -3.77 mm and their average size was 0.44 mm in C. carpio. Examining the shape and structure of microplastics showed the most amount was allocated to fibers, followed by fragment and bead respectively. The highest percentage of elements present in the investigated fiber in the digestive system of this species by EDAX analysis were related to carbon (81.70%) and oxygen (17.21%). The type of polymer based on the absorption intensity obtained from FTIR spectroscopy was polyethylene.
کلیدواژهها [English]
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