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All Journal Jurnal Kelautan Tropis Journal of Tropical Marine Science Scientific Timeline

Mohammad Agung Nugraha

Program Studi Ilmu Kelautan, Fakultas Pertanian, Perikanan, dan Biologi, Universitas Bangka Belitung

Author-ID : 3092195

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

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Penilaian Pencemaran Logam Berat Cd, Pb, Cu, dan Zn pada Sedimen Permukaan Perairan Matras, Sungailiat, Bangka Mohammad Agung Nugraha; Aditya Pamungkas; Indra Ambalika Syari; Suci Puspita Sari; Umroh Umroh; Mu’alimah Hudatwi; Eva Utami; Irma Akhrianti; Agung Priyambada
Jurnal Kelautan Tropis Vol 25, No 1 (2022): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v25i1.12317

Matras waters receive input of pollutants from tin mining activities. Heavy metals are toxic and carcinogenic to aquatic biota. Sediment is a carrier of heavy metal pollutants and can act as a “sink” and a “source”. Heavy metals in sediments can reflect the condition/quality of the aquatic system. The purpose of this study was to examine the contamination and ecological risk of heavy metals Cd, Pb, Cu, and Zn in the sediments of Matras waters, Sungailiat, Bangka Regency. Heavy metal test using atomic absorption spectrophotometer (AAS). The concentrations of heavy metals Cd, Pb, Cu, and Zn obtained ranged from 0.02-0.06 mg/kg (average 0.04 mg/kg), 0.12-0.18 mg/kg (mean- average 0.15 mg/kg), each station 0.01 mg/kg (mean 0.01 mg/kg), and 0.54-1.34 mg/kg (mean 0.92 mg/kg ). CF, I-Geo, PLI, and RI values for Cd, Pb, Cu, and Zn metals obtained in Matras water sediments showed low contamination levels (CF<1), not polluted (Igeo 0), not polluted (PLI < 1), and low ecological risk (RI < 150). The EF value obtained indicates the heavy metals Cd, Pb, Cu, and Zn in the Matras waters mainly receiving input from anthropogenic sources (EF value> 1.5). The low ecological risk status which is reinforced by the low values of CF, I-Geo, and PLI indicates that the negative potential of metals to biota is also low. Perairan Matras menerima masukan bahan pencemar dari aktivitas penambangan timah. Logam berat bersifat toksik dan karsinogenik terhadap biota akuatik. Sedimen merupakan pembawa polutan logam berat dan dapat berperan sebagai “sink” and “source”. Logam berat pada sedimen dapat merefleksikan kondisi/ kualitas sistem akuatik. Tujuan penelitian ini untuk mengkaji kontaminasi dan resiko ekologi logam berat Cd, Pb, Cu, dan Zn pada sedimen Perairan Matras, Sungailiat, Kabupaten Bangka. Uji logam berat menggunakan metode spektrofotometer serapan atom (SSA). Konsentrasi logam berat Cd, Pb, Cu, dan Zn yang diperoleh berkisar antara 0,02-0,06 mg/kg (rata-rata 0,04 mg/kg), 0,12-0,18 mg/kg (rata-rata 0,15 mg/kg), setiap stasiun 0,01 mg/kg (rata-rata 0,01 mg/kg), dan 0,54-1,34 mg/kg (rata-rata 0,92 mg/kg). Nilai CF, I-Geo, PLI, dan RI untuk logam Cd, Pb, Cu, dan Zn yang diperoleh pada sedimen Perairan Matras menunjukkan tingkat kontaminasi rendah (CF<1), tidak tercemar (Igeo 0), tidak tercemar (PLI <1), dan resiko ekologi rendah (RI < 150). Nilai EF yang diperoleh mengindikasikan logam berat Cd, Pb, Cu, dan Zn perairan Matras utamanya mendapat masukan dari sumber antropogenik (nilai EF>1,5). Rendahnya status resiko ekologi yang diperkuat dengan rendahnya nilai CF, I-Geo, dan PLI menunjukkan potensi negatif logam terhadap biota juga rendah.

Struktur Komunitas Makrozoobentos Pada Sedimen Permukaan Pantai Sampur, Kabupaten Bangka Tengah Kasi Sastra; Mohammad Agung Nugraha; Aditya Pamungkas
Journal of Tropical Marine Science Vol 5 No 1 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Sampur Beach is one of the beaches in Central Bangka Regency with a tin mining area and capture fisheries. Macrozoobenthos is a relatively large basic object, which is more than 1 mm. This study aims to determine the structure of the macrozoobenthos community (indices of diversity, uniformity, and dominance) on the surface sediments of Sampur Beach, Central Bangka Regency. This research was conducted in February 2021 at Sampur Beach, using a purposive sampling method of 5 stations (3 times in a row). Sampling was carried out using an Ekman grab. The results showed that on the surface sediments of Sampur Beach there were 163 individuals of 12 species from the class Bivalvia and Gastropods spread over 5 observations. The density of macrozoobenthos ranged from 375 - 1525 individuals/m2 and the species composition ranged from 2 - 88%. At the study site, the diversity index (H) values ranged from 0.503 to 1.382, the uniformity index (E) ranged from 0.312 to 0.713, and the dominance index ranged from 0.355 to 0.788. This study shows that the level of macrozoobenthos diversity in the surface sediments of Sampur Beach is low to moderate, the level of uniformity is low to high, and there is no dominant species.

Konsentrasi Dan Distribusi Karbon Organik Total (TOC), Total Nitrogen (TN) Dan Rasio C/N Pada Sedimen Di Perairan Kawasan Pelabuhan Pangkal Balam, Bangka Lara Sukma Sadewi; Mohammad Agung Nugraha; Irma Akhrianti
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Total organic carbon (TOC), total nitrogen (TN) and C/N ratio are organic matter present in the waters. The waters of Pangkal balam port area has a fairly dense community activity such as ports, aquaculture, PLTU and settlements. The waste from the activity enters the water column so that it can affect the abundance of the waters, therefore research on organic matter needs to be carried out in the waters of the Pangkal Balam Port Area. This study aims to determine the distribution pattern of TOC, TN and sediment C/N ratio in the waters of the Pangkal Balam Port Area. Knowing the source of organic matter input in the waters of the Pangkal Balam Port Area and knowing the relationship between TOC and fine sediment. Determination of research stations using stratified purposive sampling method. The sampling time was carried out in February 2021 in the waters of the Pangkal Balam Port Area, Bangka. TOC and TN concentrations were analyzed using the Walkley Black method and the Kjeldahl method. The TOC concentration ranges from 0.59-9.79% which is categorized as low to high, while the TN concentration scores between 0.01-0.06% which is classified as low to high and the C/N ratio is and 59-244.75 which is explain the main source of organic material input from terrestrial. TOC with fine sediment has a positive relationship and a weak effect (r = 0.472) and the coefficient of determination (R2) is 0.223%.

Geokimia dan Asesmen Pencemaran Logam Berat Cd, Cu dan Zn pada Sedimen Permukaan Estuari Baturusa, Bangka Mohammad Agung Nugraha; Irma Akhrianti; Fika Dewi Pratiwi; Agung Priyambada
Jurnal Kelautan Tropis Vol 26, No 1 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i1.16467

The Baturusa estuary receives inputs of organic and inorganic materials from several human activities along the river. The characteristics of heavy metals such as toxicity, resistance to decomposition, and ability to accumulate in aquatic biota can indirectly have a negative impact on the health of humans who consume marine biota. The research was conducted with the aim of studying the geochemical characteristics and assessing the level of heavy metal contamination of Cd, Cu and Zn in the sediments of the Baturusa Estuary. Heavy metal fractionation was analyzed by sequential extraction. The CF value of Cu and Zn metals shows a low level of contamination, while Cd shows a moderate level of contamination. I-Geo metal Cd is in the unpolluted to moderately polluted status, while Cu and Zn are not polluted. The PLI value indicates the unpolluted category. Geochemical fractionation of heavy metals Cd, Cu and Zn Baturusa Estuary is characterized by the presence of exchangeable, carbonate, reducible, oxidizable and residual fractions. Cu and Zn mainly tend to be stored/bound to the residual fraction (mainly derived from natural sources) while Cd is more bound to the non-residual fraction (mainly derived from human/anthropogenic activities). The risk evaluation of Cd metal is very high to high risk/hazard, while Cu and Zn are not at risk/hazardous to low. These conditions indicate that Cd metal may be harmful to the environment and has a higher mobility than other metals so that it has a higher risk of being available in the body of biota. Estuari Baturusa menerima masukan bahan organik dan anorganik dari beberapa aktivitas manusia disepanjang sungai. Karakteristik logam berat seperti toksisitas, resisten terhadap dekomposisi, dan kemampuan akumulasi terhadap biota akuatik serta secara tidak langsung dapat berdampak negatif terhadap kesehatan manusia yang mengkonsumsi biota laut. Penelitian dilakukan dengan tujuan untuk mengkaji karakteristik geokimia dan menilai tingkat kontaminasi logam berat Cd, Cu, dan Zn pada sedimen Estuari Baturusa, Bangka. Fraksinasi logam berat dianalisis dengan ekstraksi bertahap. Nilai CF logam Cu dan Zn menunjukkan tingkat kontaminasi rendah (CF<1), sedangkan Cd menunjukkan tingkat kontaminasi sedang (1≤CF<3). I-Geo logam Cd berada pada status tidak tercemar hingga tercemar sedang (0<Igeo<1), sedangkan Cu dan Zn memiliki status tidak tercemar (Igeo 0). Nilai PLI menunjukkan kategori tidak tercemar (PLI<1). Fraksinasi geokimia logam berat Cd, Cu dan Zn Estuari Baturusa dicirikan dengan adanya fraksi exchangeable, karbonat, reducible, fraksi oxidizable, dan residual. Logam Cu dan Zn utamanya cenderung tersimpan/ terikat pada fraksi residual (utamanya berasal dari sumber alami) sedangkan Cd lebih terikat pada fraksi non residual atau non resisten (utamanya berasal dari aktivitas manusia/ antropogenik). Evaluasi resiko dari logam Cd yaitu resiko/ bahaya sangat tinggi hingga tinggi, sedangkan Cu dan Zn tidak beresiko/ berbahaya hingga rendah. Kondisi tersebut menunjukkan bahwa logam Cd kemungkinan berbahaya bagi lingkungan serta memiliki mobilitas lebih tinggi daripada logam lain sehingga beresiko lebih tinggi tersedia dalam tubuh biota.

Sebaran Partikel Tersuspensi, Partikel Terlarut dan Laju Sedimentasi di Teluk Kelabat Luar, Area Pengaruh Penambangan Timah Indra Ambalika; Umroh; Mohammad Agung Nugraha; Aditya Pamungkas; Eva Utami; Irma Akhrianti; Mualimah Hudatwi; Suci Puspita Sari; Titin Marfuah
Scientific Timeline Vol. 1 No. 2 (2021)
Publisher : UNU Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar

Water turbidity will impact how far the level of distribution of suspended and dissolved particles will affect the life of marine biota. This study aimed to determine the distribution of suspended and dissolved particles in the waters of Teluk Kelabat Luar. Water sampling was carried out in July 2019, representing the east monsoon. Determination of the water sampling location was by purposive sampling method, and then the data were analyzed descriptively. The results showed that the concentration of total suspended solids (TSS) on the surface (1 m) of Teluk Kelabat Luar has the highest concentration at point 4 (KL 4) with TSS concentrations in the range of 36,5 mg/L and point 14 (KL 14) in the range of 34,0 mg/L. Point 4 was the post-tin mining location. From this, it could be seen that the waters are still affected even after mining activities, namely the high concentration of TSS. The analysis of total dissolved solids (TDS) showed the highest concentration at point 12 (KL 12). The sedimentation rate in Teluk Kelabat Luar is in the medium-severe category, which is around 1,92 mL/hour. The results showed that mining had a tremendous effect on the level of suspended particles in the waters.

Co-Authors Agung Priyambada Agung Priyambada Eva Utami Fika Dewi Pratiwi Indra Ambalika Indra Ambalika Syari Irma Akhrianti Irma Akhrianti Kasi Sastra Lara Sukma Sadewi Mualimah Hudatwi Mu’alimah Hudatwi Pamungkas, Aditya Suci Puspita Sari Suci Puspita Sari Titin Marfuah Umroh Umroh Umroh

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