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All Journal Chemistry Indonesian Journal of Chemical Research Bioed : Jurnal Pendidikan Biologi
Banjar, Firman
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Engineering Environmental Science Immunology & microbiology

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The Analysis of The Absorption Capabilities of The Heavy Metal Mercury (Hg) in Mangrove Crab (Scylla serrata), Mangrove Snail (Telescopium telescopium) and Mangrove Clams (Polymesoda erosa) Irsan, Irsan; Male, Yusthinus T.; Koto, Saifuddin; Mangesa, Rosita; Ismail, Irwan; Nuraisah, Siti; Kabau, Widyawati; Banjar, Firman
Indonesian Journal of Chemical Research Vol 12 No 3 (2025): Edition for January 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.12-irs

Abstract

Mercury is a neurotoxic heavy metal with high bioaccumulation ability in aquatic biota, such as mangrove crabs (Scylla serrata), mangrove snails (Telescopium telescopium), and mangrove mussels (Polymesoda erosa), which are widely consumed by humans, and used as bioindicators of pollution. This study aimed to analyze the effect of mercury solution concentration and species differences on mercury absorption in the three biota. The method used was experimental treatment with mercury concentrations of 1 ppm, 5 ppm, 10 ppm, and control. Samples were analyzed using the AAS Cold Vapor method at the IPB Bogor Proling Laboratory. Data were analyzed descriptively and inferentially using two-way Anova with an α level of 0.05, followed by the Duncan Test if the hypothesis was accepted. Research data will be processed using SPSS 26.0 software. The results showed that mercury concentration and species differences influenced the ability to absorb mercury. Mangrove clams had the highest mercury accumulation compared to mangrove snails and mangrove crabs, especially in the 5 ppm and 10 ppm treatments. The highest mercury exposure occurred on the second day of observation.
Pengaruh Media Pembelajaran Audio Visual terhadap Hasil Belajar Siswa Kelas XI pada Konsep Sistem Pernapasan Manusia di MA Uswatun Khasanah Lala Kabupaten Buru Banjar, Firman; masihu, junardin muhamad
Bioed : Jurnal Pendidikan Biologi Vol 13, No 2 (2025): Bioed : Jurnal Pendidikan Biologi
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/jpb.v13i2.21270

Abstract

Tujuan penelitian ini adalah mengetahui pengaruh media audio visual terhadap hasil belajar siswa kelas XI pada materi biologi di MA Uswatun Hasanah Lala Kabupaten Buru. Penelitian ini dilakukan selama satu bulan yaitu bulan Mei 2025 sampai Juli 2025 pada tahun ajaran 2024/2025 di MA Uswatun Hasanah Desa Karang Jaya Kabupaten Buru. Penelitian ini adalah termasuk jenis penelitian Pre-Eksperimental menggunakan rancangan One Group Prettest-Posttest Design. Instrumen dalam penelitian ini adalah lembar prettest dan posttest untuk mengukur hasil belajar siswa sebelum dan setelah mengimplementasikan media audiovisual. Analisis data digunakan dalam penelitian ini yaitu uji deskritif dan uji paired samples t-test menggunakan bantuan program SPSS Windows 27. Hasil penelitian ditemukan bahwa uji paired samples t-test dengan nilai signifikansi sebesar 0.120 ≥ 0.05 maka dapat disimpulkan bahwa terdapat pengaruh media audio visual terhadap hasil belajar siswa di MA Uswatun Hasanah Kabupaten Buru. Untuk mengetahui sumbangsi variabel media audiovisual (x) terhadap variabel hasil belajar (y) maka dilakukan uji koefesien determinasi dengan mengacu pada nilai R Square (R2) dengan angka uji 0.666, artinya sumbangan variabel media audio visual (x) terhadap hasil belajar siswa (y) sebesar 44.4%.Kata Kunci: Media Audio Visual, Hasil Belajar Siswa, Konsep Sistem Pernafasan Pada Manusia
Co-Authors Irsan Irsan Ismail, Irwan Junardin Muhamad Masihu Kabau, Widyawati Koto, Saifuddin Mangesa, Rosita Siti Nuraisah, Siti Yusthinus T. Male