MICROPLASTIC ANALYSIS IN HUMAN FECES: A CASE STUDY IN PALEMBANG CITY, INDONESIA

Abstract

Background: Microplastic pollution has become an increasingly serious environmental and public health concern. Microplastics, defined as plastic particles smaller than 5 mm, can enter the human body through contaminated food, drinking water, and air. Fecal analysis serves as a direct indicator of human exposure to microplastics. Object: This study aimed to analyze the presence and abundance of microplastics in human feces among residents of Palembang City, Indonesia. Methods: A descriptive laboratory study was conducted using fecal samples collected from 30 purposively selected respondents based on their daily consumption patterns and sources of drinking water. Microplastics were separated using a density separation method and identified through stereomicroscopy and Fourier Transform Infrared (FTIR) spectroscopy. Results. The results showed that microplastics were detected in all fecal samples, with concentrations ranging from 13 to 35 particles per gram and an average of 23 particles per gram. The dominant polymer types identified were polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET). Microplastic exposure was associated with dietary and environmental factors, particularly among individuals who consumed fish and used refill or river water. Conclusion: Conclusion, residents of Palembang City are significantly exposed to microplastics through daily consumption and environmental contact, indicating the need for further research and preventive efforts in urban food and water safety management.