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Djunaidi Djunaidi
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Journal : Jurnal Segara

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STUDY OF SEA WATER QUALITY BASED ON PHYSICAL-CHEMICAL PARAMETERS IN THE WATERS OF THE MALAKA STRAIT Djunaidi, Djunaidi; Widagdo, Aris; Kelana, Perdana Putra; Pramesthy, Tyas Dita; Arkham, Muhammad Nur; Haris, Rangga Bayu Kusuma; Hutapea, Roma Yuli F; EY, M. Habib
Jurnal Segara Vol 19, No 1 (2024): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v19i1.14243

Abstract

It is feared that the high level of human activity in the coastal areas of Dumai City and Bengkalis City will have a polluting impact on water quality conditions. Therefore, to preserve coastal and marine functions, it is necessary to manage the quality and control of sea water pollution for present and future purposes as well as ecological balance. This research aims to determine the water quality of Dumai City and Bengkalis City, focusing on the concentration of several physical and chemical water parameters listed in the sea water quality standards for marine biota. Water quality sampling was carried out in May-August 2023 at 12 research stations, then the results were compared with sea water quality standards for marine biota. The research results show that the parameters that still comply with sea water quality standards for marine biota based on the Decree of the Minister of the Environment No. 51 of 2004 are temperatures in the range of 28.7-30.8˚C and an average value of 29.45˚C., pH ranged from 6.4–7.2, with an average value of 6.9 and dissolved oxygen (DO) ranged from 5.0 – 5.9 mg/l, with an average of 5.34 mg/l. Meanwhile, the parameters that do not comply with quality standards are low brightness ranging from 0.40 m-0.58 m with an average brightness of 0.47 m and salinity ranging between 22-28 ppt, with an average salinity of 24 ppt
ANALYSIS OF HEAVY METAL CONTENT IN WATER, SEDIMENT, AND FISH IN THE WATERS OF DUMAI CITY, RIAU PROVINCE Djunaidi, Djunaidi; Arkham, Muhammad Nur; Hutapea, Roma Yuli F.; Kelana, Perdana Putra; Ikhsan, Suci Asrina; Haris, Rangga Bayu Kusuma; Widagdo, Aris; Sari, Iya Purnama; Rejeki, Sri Untari Puji; Sumitro, Martinus Robinson
Jurnal Segara Vol 20, No 2 (2025): December
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v20i2.17337

Abstract

The waters of Dumai City, located in Riau Province and directly connected to the Malacca Strait, are highly accessible both locally and internationally. The coastal area is characterized by intensive human settlements and diverse industrial activities, including oil and gas, crude palm oil (CPO), and cement industries, which discharge wastes that may affect marine biota. Most of these wastes are transported to the sea through river flows, posing a serious threat to the ecological balance and aquatic organisms, particularly fish, with potential risks to human consumers. This study aimed to examine the physicochemical parameters of the waters and to determine the concentration and status of cadmium (Cd) and lead (Pb) in water, sediment, and fish. The research was conducted from April to June 2025 using survey, observation, and experimental methods in both field and laboratory settings. Data were analyzed using Atomic Absorption Spectrophotometry (AAS) to measure the actual concentrations of heavy metals. The results were compared with the threshold values established by the Indonesian Ministry of Environment Decree No. 51/2004 concerning marine water quality standards for aquatic biota. The findings revealed that the physicochemical parameters, including water temperature, salinity, and dissolved oxygen (DO), remain supportive of aquatic life according to the standards. However, the concentrations of Pb and Cd in water, sediment, and fish samples exceeded the permissible limits, indicating pollution in Dumai waters.
Co-Authors Aan Suriadi, Aan Abrar Abrar Abrori, M. Zaki Latif Ade Dwi Utami Ade Firmansyah Afdal Afdal, Afdal Afif Nur Rahmadi, Afif Nur Aidil, Fikri Amiruddin Amiruddin Andra Novitasari Angelika, Neindea Ansri Anvilla, Zellina Anwar, Sony Arumwati, Arumwati Aswadi Jaya, Aswadi Bukman Lian, Bukman Casmana, Asep Rudi Christian , Marcellino Darmawan Darmawan Demeainto, Bobby DESSY NATALIA Dwi Wulandari Effendi, Darwin EY, M. Habib Fachry Abda El Rahman Fadhillah, Dini Nur Febrianti, Trimalia Febrianto, Fredi Fitriyani Fitriyani Gani, Mashudi Ghasandika, Absal Habib EY., M. Haris, Rangga Bayu Kusuma Heldiyani, Eni Hendra Lesmana Henny Henny, Henny Heny Permata Sari Heriyandi, La Ode Hermanto Hermanto Husmiati, Ratu Hutapea, Roma Yuli F Istiyono, Fendik Onni Iya Purnama Sari Khairunnas, Khairunnas Komari, Lely Nurul Laely, Nur Listriasdy, Listriasdy Mardiah, Ratu Sari Marta, Nur Aeni Masagus Firdaus, Masagus Misnawati Misnawati Moch Sukardjo Monika, Lisa Muhammad Afdal Muhammad Arsyad Muhammad Japar Muhammad Nur Arkham Mujiyanto Mujiyanto N. Nurjanah Noer Rohmah Nur Ahyani Nur Arkham, Muhammad Nursamsu Nursamsu Nursilawati, Nursilawati Pamaharyani, Luchiandini Ika Perdana Putra Kelana pramuditasari, dian Purnamaningsih, Nining Putra, Alhadi Yan Putri, Mega Kusuma Rafinzar, Rahmad Rahmattulah, Rahmattulah Rangga Bayu Kusuma Haris Rejeki, Sri Untari Puji Rivaldi, M.Rivaldi Husaini Hardiansyah Rivardi, Ferdiansyah Rizqi ilmal yaqin, Rizqi ilmal RR. Ella Evrita Hestiandari Sakdiyah, Choli Latus Sarianto, Deni Siahaan, Juniawan Preston Simarmata, Rio Ari Subagyo, Heri Suci Asrina Ikhsan Sudjiono Suleman, Zulfikri Sumitro, Martinus Robinson Supriyadi Supriyadi Suryati Suryati Tresiya, Dhita Trnmiyati, Eko Tumpu, Mula Tyas Dita Pramesthy utami, melati Widagdo, Aris Wijianto, Hafid Syahromi Yaser Krisnafi, Yaser Yudi Fernandes Hutagalung Yuningsih, Neni Misna