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All Journal Jurnal Chemurgy geoedusains: Jurnal Pendidikan Geografi Ilmu Perikanan Tropis Nusantara Jurnal Pengabdian Pada Masyarakat Al-'Adad: Jurnal Tadris Matematika
Hamdhani, Hamdhani
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Analysis of water fertility status based on the Trophic State Index (TSI) in the Air Hitam Urban Polder, Samarinda Ulu District, East Kalimantan Costarika, Stefhanie Stevi; Hamdhani, Hamdhani; Masruhim, Amir
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 4 No. 2 (2025): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/q6w58353

Abstract

Waters near urban centers are highly vulnerable to pollution, a condition likely occurring in the Air Hitam Polder in Samarinda, which receives inflow from urban drainage and is surrounded by intense human activity. This study aimed to determine the Polder’s trophic status using the Carlson Trophic State Index (TSI) based on water transparency, total phosphate, and chlorophyll-a, analyzed spatially and temporally. It also assessed general water quality and examined the relationship between nutrients (phosphate, nitrate, ammonia) and chlorophyll-a. Measurements at five stations included transparency, chlorophyll-a, DO, EC, TDS, temperature, pH, and turbidity, with laboratory analyses for phosphate, nitrate, and ammonia. Sampling was conducted six times. Results show Station 3 had the highest TSI (75.25), likely due to its location near the main inlet carrying organic and inorganic materials. Temporally, the Polder was classified as hypereutrophic, with TSI values >60 at all stations. Phosphate had the strongest relationship with chlorophyll-a. Several parameters (DO, EC, TDS) met water quality standards, while others (phosphate, nitrate, ammonia, temperature, pH, transparency, turbidity) exceeded limits. Overall, current conditions are unsuitable for aquatic life, indicating the need for improved management to restore the ecological function of the Air Hitam Polder.
Water quality assessment using the STORET method and formulation of pollution control strategies in the Sangatta River, East Kutai Regency, Indonesia Sandra, Novita Dwi; Rizal, Samsul; Hamdhani, Hamdhani
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 4 No. 2 (2025): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/1m2ktd59

Abstract

The Sangatta River, located in East Kutai Regency, East Kalimantan, is a vital water resource that plays a significant role in supporting both local communities and ecosystems. However, the increasing pressure on this river necessitates regular monitoring to assess its water quality status. This study aims to assess and analyze the water quality of the Sangatta River, determine its water quality status, and identify potential measures for controlling water pollution in the river. The research employed the STORET method. Based on this method, the results were as follows: -22 (upstream 1), -34 (upstream 2), -50 (downstream 1), -54 (downstream 2), and -40 (downstream 3). These findings indicate that the Sangatta River is classified as heavily polluted, with an overall score of -40 according to the STORET method. Efforts to control river water pollution should focus on social and institutional aspects, particularly by enhancing community participation in pollution control efforts for the Sangatta River.
The concentration of Mn and Fe metals in water and sediment of the Sanga-Sanga River, East Kalimantan Province Larissa, Astrid Attha; Ghitarina, Ghitarina; Hamdhani, Hamdhani
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 4 No. 2 (2025): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cb0p9x16

Abstract

This study aimed to analyze the concentrations of manganese (Mn) and iron (Fe) in both water and sediment samples from the Sanga-Sanga River, Kutai Kartanegara Regency, East Kalimantan Province. The research was conducted from October to December 2024 at three stations representing the upstream, midstream, and downstream sections of the river. Sampling was performed using a purposive method based on site characteristics, and analyses were carried out both in situ and at the Water Quality Laboratory, Faculty of Fisheries and Marine Science, Mulawarman University. The concentrations of Mn and Fe were compared with the Indonesian river water quality standard (Government Regulation No. 22 of 2021) and sediment quality guidelines established by the Australian and New Zealand Environment and Conservation Council (ANZECC, 2000). The results showed that Mn concentrations in river water ranged from 0.325 to 1.181 mg/L, exceeding the permissible limit of 0.1 mg/L, while Fe concentrations ranged from 0.3475 to 0.468 mg/L, surpassing the standard of 0.3 mg/L. In sediments, Mn concentrations ranged from 42.38 to 964.47 mg/kg and Fe concentrations from 11,341.23 to 50,344.72 mg/kg, with several stations exceeding the ANZECC guideline limits. Higher concentrations were generally found at midstream and downstream stations, particularly in areas influenced by coal mining, barge transport, and ship repair activities. These findings indicate that the Sanga-Sanga River has experienced notable contamination by Mn and Fe, primarily due to anthropogenic activities related to coal industry operations. Continuous monitoring, stricter waste management, and the implementation of pollution control measures are recommended to prevent further environmental degradation and protect aquatic ecosystems.
Analysis of the Seawater Quality Index in the Marine Waters of Bontang City, East Kalimantan Kurniawan, Burhan; Rizal, Samsul; Mandang, Idris; Pagoray, Henny; Sitorus, Saibun; Hamdhani, Hamdhani
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 4 No. 2 (2025): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/gz5bk083

Abstract

Seawater quality is a key factor in determining the health of coastal ecosystems and the sustainability of marine resources. Anthropogenic activities such as the discharge of industrial and domestic waste, marine transportation, and intensive fishing practices can influence the physical, chemical, and biological parameters of seawater. Research on seawater quality in the marine waters of Bontang City has been conducted, but remains very limited in number. This study aims to analyze the Seawater Quality Index (IKAL) in the marine waters of Bontang City. The analytical method employed refers to the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia No. 27 of 2021. The results indicate that the average Seawater Quality Index (IKAL) in Bontang City during the second semester of 2023 was 72.69, which is categorized as good condition.
ANALISIS STATUS MUTU AIR HULU SUNGAI LAWA MENGGUNAKAN METODE INDEKS PENCEMARAN DAN STORET DI KABUPATEN KUTAI BARAT Sariyadi, Sariyadi; Hamdhani, Hamdhani; Setiawan, Yunianto; Mustakim, Mohammad; Tarigan, Daniel; Hasan, Harjuni; Sarwono, Edhi
Jurnal Chemurgy Vol 10, No 1 (2026): Jurnal Chemurgy-Juni 2026
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v10i1.26661

Abstract

Tujuan penelitian ini adalah mengkaji kualitas air di hulu Sungai Lawa, Kabupaten Kutai Barat, dengan menggunakan metode Indeks Pencemaran (IP) dan STORET. Sungai Lawa memiliki peran ekologis, sosial, dan ekonomi penting bagi masyarakat, namun dalam dua dekade terakhir menghadapi tekanan antropogenik akibat pertambangan batubara, perkebunan, dan pemukiman. Penelitian dilakukan melalui pengukuran parameter fisika, kimia, dan biologi pada tujuh titik selama dua periode.Hasil menunjukkan bahwa metode IP menempatkan mutu air pada kategori cemar ringan dengan skor rata-rata 2,298–2,499. Sebaliknya, metode STORET menghasilkan kategori tercemar sedang dengan skor rata-rata -25, bahkan pada Titik 3 dan Titik 5 masuk kategori tercemar berat. Parameter yang paling berkontribusi terhadap penurunan kualitas air adalah TSS, DO rendah, BOD dan COD tinggi, pH asam, fosfat, serta kontaminasi mikrobiologi berupa Fecal Coliform.Kesimpulan penelitian menegaskan bahwa kualitas air Hulu Sungai Lawa telah mengalami degradasi nyata. IP lebih konsisten untuk analisis tren jangka panjang, sedangkan STORET lebih sensitif terhadap variasi spasial. Penggunaan keduanya secara komplementer memberikan gambaran utuh kondisi mutu air. Strategi pengelolaan DAS berbasis data, restorasi ekosistem, pengendalian limbah, serta integrasi kearifan lokal diperlukan untuk meningkatkan kualitas air menuju kategori baik Kata Kunci: Sungai Lawa, kualitas air, Indeks Pencemaran, STORET, DAS
Co-Authors Anugrah Aditya Budiarsa, Anugrah Ashar, Andini Aulia Ayuk Baehaqi Costarika, Stefhanie Stevi Daniel Tarigan Edhi Sarwono Eryati, Ristiana Fadhilla , Febby Nur Fadhilla, Febby Nur Fitriana, Ika Sari Ghitarina Ghitarina, Ghitarina Harijono , Gregorius Viky Harjuni Hasan Henny Pagoray, Henny Ibrahim Ibrahim Idris Mandang, Idris Irwan Ramadhan Ritonga Jailani Jailani Khoirunnisa, Nanda Kurniawan, Burhan Larissa, Astrid Attha Mangoting, Jelpratiwi Masruhim, Amir Mustakim, Mohammad Paputungan, Mohammad Sumiran Prasetyo, Wahyu Agus Rahma Dania Rozi, Fachrul Saibun Sitorus Sandra, Novita Dwi Saputri, Dea Sariyadi, Sariyadi Setyasih, Iya Sharaha , Musyiir Suriyana Suriyana Suryana, Irma Tandilese, Elma Dannari Yunianto Setiawan, Yunianto