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All Journal Jurnal Sains dan Teknologi MATHunesa: Jurnal Ilmiah Matematika
Firda Fadri
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Computer Science & IT Education Mathematics

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Heavy Metal Toxicity of Pb in the Organs of Nile Tilapia (Oreochromis Niloticus) in the Watershed Due to Hospital Waste Nindha Ayu Berlianti; Yuda Cahyoargo Hariadi; Arry Yuariatun Nurhayati; Wenny Maulina; Firda Fadri
JST (Jurnal Sains dan Teknologi) Vol. 13 No. 3 (2024): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v13i3.84865

Abstract

The toxicity levels of heavy metals accumulated in water and sediment due to hospital waste discharge not only impact the environment but also pose a significant threat to human health. Long-term accumulation of these metals in the body may lead to degenerative diseases such as cancer. This concern highlights the urgency of conducting laboratory-based experimental research to identify the distribution of heavy metals in aquatic environments caused by hospital waste. The study employs Nile tilapia (Oreochromis Niloticus) as a bioindicator, a species capable of absorbing metals through its tissues. The research subjects consisted of 35 Nile tilapia with a body length of 8–12 cm and a weight of 12–15 grams, alongside hospital waste samples collected from three discharge points. Data collection methods included sample preparation of both hospital waste and Nile tilapia, treatment with varying concentrations of lead nitrate (Pb(NO3)2), and maintenance durations of 7, 14, 21, and 28 days. The concentration of Pb in the gills and muscle tissue of the fish was measured using Atomic Absorption Spectroscopy (AAS). The analytical data, represented as heavy metal concentrations, were plotted on a graph showing the relationship between concentration variations and maintenance durations and analyzed using One-Way ANOVA with nonparametric Tukey's test. The analysis revealed that the highest Pb concentration was observed in the gills of Nile tilapia on day 28 at 1.57 ppm, while the Pb concentration in muscle tissue reached 0.25 ppm on day 21. According to BPOM standards, Pb levels in Nile tilapia muscle tissue remain within the safe consumption threshold (≤0.3 ppm), whereas Pb levels in the gills exceeded the tolerance limit. This study provides scientific evidence on the risks of heavy metal accumulation in aquatic biota due to hospital waste and underscores the importance of improved waste management practices to safeguard public health and the environment.
A PANEL DATA ANALYSIS OF THE EFFECT OF POPULATION DENSITY AND ENVIRONMENTAL POLLUTION ON URBAN POPULATION GROWTH IN THE WORLD: ANALISIS DATA PANEL TERHADAP PENGARUH KEPADATAN PENDUDUK DAN POLUSI LINGKUNGAN TERHADAP PERTUMBUHAN POPULASI URBAN DI DUNIA Kharisma Kurnia Wulandari; Salzabila Qurrota A'yun Arganitya; Firda Fadri
MATHunesa: Jurnal Ilmiah Matematika Vol. 14 No. 1 (2026)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathunesa.v14n1.p287 - 293

Abstract

Penelitian ini menganalisis pengaruh faktor lingkungan dan kepadatan penduduk terhadap pertumbuhan populasi urban secara global dengan menggunakan data panel tahunan dari tahun 1960 hingga 2024. Variabel independen meliputi kepadatan penduduk, tingkat polusi udara (PM2.5), dan akses listrik sebagai indikator kondisi lingkungan dan infrastruktur dasar. Analisis dilakukan menggunakan regresi data panel dengan membandingkan Common Effect Model (CEM), Fixed Effect Model (FEM) dan Random Effect Model (REM). Pemilihan model terbaik melalui uji Chow dan uji Hausman menunjukkan bahwa REM merupakan model yang paling sesuai. Hasil penelitian memperlihatkan bahwa kepadatan penduduk dan polusi udara berpengaruh positif dan signifikan terhadap pertumbuhan populasi urban, sehingga menunjukkan bahwa tekanan demografis dan tingginya aktivitas ekonomi–industri menjadi pendorong utama urbanisasi. Sebaliknya, akses listrik tidak berpengaruh signifikan, kemungkinan karena tingkat ketersediaannya yang relatif merata di banyak negara. Temuan ini menegaskan pentingnya pengendalian kepadatan wilayah dan perbaikan kualitas lingkungan sebagai dasar perumusan kebijakan pembangunan perkotaan yang berkelanjutan
Co-Authors Arry Yuariatun Nurhayati Kharisma Kurnia Wulandari Nindha Ayu Berlianti Salzabila Qurrota A'yun Arganitya Wenny Maulina Yuda Cahyoargo Hariadi