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All Journal Dialektika VALENSI Jurnal Pendidikan Kimia Indonesia Pendidikan Matematika Jurnal Tadris Kimiya Jurnal Zarah Alotrop Jurnal Pendidikan dan Ilmu Kimia JOIV : International Journal on Informatics Visualization Anfusina: Journal of Psychology Jurnal Pendidikan Kimia (JPKim) Jurnal Rekayasa Sipil English Language and Literature International Conference (ELLiC) Proceedings JURNAL PENDIDIKAN TAMBUSAI B-Dent, Jurnal Kedokteran Gigi Universitas Baiturrahmah JURTEKSI Ensiklopedia of Journal Jurnal Menara Ekonomi : Penelitian dan Kajian Ilmiah Bidang Ekonomi Jurnal Kridatama Sains dan Teknologi Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist) Sainstek : Jurnal Sains dan Teknologi Optika : Jurnal Pendidikan Fisika CALL Cybernetics: Journal of Research and Educational Studies El-Mujtama: Jurnal Pengabdian Masyarakat Journal of English Language and Education JURNAL PENDIDIKAN DAN ILMU FISIKA Nautical: Jurnal Ilmiah Multidisiplin Indonesia Edu Society: Jurnal Pendidikan, Ilmu Sosial dan Pengabdian Kepada Masyarakat Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia Jurnal Keperawatan Majalah Cendekia Mengabdi Salus Publica El-Mujtama: Jurnal Pengabdian Masyarakat Journal of Civil Engineering and Vocational Education Venus: Jurnal Publikasi Rumpun Ilmu Teknik Manajemen Pendidikan Sinergi : Jurnal Ilmiah Multidisiplin DIKKESH : Jurnal Penelitian Pendidikan dan Kesehatan Open Access DRIVERset
Nurhamidah Nurhamidah
University of Bengkulu
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Assessment of Macronutrient Dynamics in a Tropical Watershed: A Study from Bengkulu River and Estuary Indonesia Wiwit, Wiwit; Ikhsani, Idha Yulia; Nurhamidah, Nurhamidah; Oktiarni, Dwita; Wong, Kuo Hong
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 1, May 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i1.42477

Abstract

This study assesses the sources, transport, and distribution of macronutrients, including nitrate, nitrite, silicate, and phosphate, starting from the upper stream of the Bengkulu River, which is the biggest river in Bengkulu Province, to the coastal seawater of the eastern tropical Indian Ocean. The sampling was conducted using an acid-washed polypropylene beaker and placed in acid-cleaned 5 L polyethylene containers during the dry season in July 2024. The water samples were collected from the surface waters of 15 stations. The macronutrients in the water samples were determined using a spectrophotometer UV-Vis following the Strickland and Parsons method. Macronutrient analysis was conducted in LATERIO BRIN, Jakarta, Indonesia. The concentration of analysed macronutrients ranged from 0.005 - 0.058 mgN-NO3/L for nitrate, <0.001 - 0.014 mgN-NO2/L for nitrite, 0.163 - 9.314 mgSi-Si(OH)4/L for silicate, and 0.01 - 0.085 mgP-PO4-/L for phosphate. Several stations, including Stations 6, 10, and 14, exhibited relatively elevated nitrate concentrations, which were further supported by similarly high phosphate levels. Stations 6, 10, and 14, situated near areas of intense anthropogenic activity in Bengkulu City, suggest that human-induced inputs have enriched the water environment with macronutrients. The highest silicate concentration was observed at Station 1, located upstream in the Bengkulu River. This aligns with previous findings and underscores the role of weathering processes in controlling silicate distribution. Compared to the macronutrient concentration guidelines for river water set by Indonesian Government Regulation 2021 No. 22, the nitrite concentrations at certain river stations exceeded the safety threshold for aquatic biota. In contrast, nitrate and phosphate levels remained within the safe range.
Co-Authors Adfar, Tika Dwita Afriani, Lisa Agustiningtias, Wardah Izzati Ahmad Fikri Ahmad Junaidi Al Imran, Al Imran Alwi, Wiwit AM, Juhri Amida, Nadia Andari, Rafika Anita Lontaan Ardhan Ismail Ardipal Ardipal Ariyasra, Utami Asmawati Atus Amadi Putra Daoed, Darwizal Deviyanti, Dira Dewi Handayani Dezi Ilham, Dezi Diningrat, Mohammad Santosa Mulyo Dwita Adfar, Tika Dwita Oktiarni Fitrianola Rezkiki, Fitrianola Fuji Astuti Harjuni Hasan Hepriyeni, Yesi Hermansyah Amir, Hermansyah Hidayatullah, Syarief Idha Yulia Ikhsani, Idha Yulia Ihsanudin, Nurwahid Indah Permata Sari Intan Aritoanng Jupriani, Jupriani Kartika, Imelda Rahmayunia Kornialia, Kornialia Kurnia, Rahma Fitri Kursid, Shinggo Al Ghazali Kusmiyati Kusmiyati Lubis, Iin Almeina M. Badrun Mabruroh, Faizatul Malfita, Mira Manora, Elsa Maria Nova, Maria Martalena Martalena Masrul Djalal Mega Fatimah Rosana Memah, Herlina Mhd. Fuad Zaini Siregar Molli Wahyuni Muhammad Ardiansyah Sembiring Mustamin Mustamin Nanda, Meutia Naryatmojo, Deby Luriawati Nasution, Finka Huzairi Netty Jojor Aritonang Nifen, Silta Yulan Nisa, Alfi Khoiru An Nisaummahmudah, Nisaummahmudah Nuratni, Ni Ketut Oktiawan, Yayan Rahma Shafira, Anugra Rahmadani, Siti Ramadan, Novrizal Rina Elvia, Rina Sairi, Andi Putra Saragih, Aminah br Sari, Nada Sari, Rosalinda Amanda Sari, Sri Rahma Selistio, Dian Setyadilla, Rahmah Sofia Retnowati Sri Junita Nainggolan Sura Menda Ginting Tirtawati , Gusti Ayu Usman, Rini Usmiar, Usmiar Wagiran Wagiran wahyu, Fitri Febriani Widiyani, Ardia Widya, Herma Wiwit, Wiwit Wong, Kuo Hong Yanti, Della Novri Yosie Andriani Yulyanti Harisman Yusi Riksa Yustiana, Yusi Riksa Zarinda, Septi Wila Zulhira, Puja