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Analysis of Microplastics of Bilih Fish (Mystacoleucus padangensis) in Lake Singkarak, West Sumatra Using FT-IR Spectroscopy Ad'hani, Calysta Deli; Zulkarnaini, Zulkarnaini; Silvia, Shinta; Yuranda, Fitri
Elkawnie: Journal of Islamic Science and Technology Vol 10, No 2 (2024)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i2.22336

Abstract

Abstract: Microplastics have become a global concern due to their wide distribution and ecological effects. Understanding the interactions between microplastics and ecosystems is important for environmental risk assessment. This study analyzed the abundance and distribution of microplastics in Lake Singkarak. Substantial microplastic research is still lacking for freshwater biota, so a study was conducted to determine the level of microplastic pollution in bilih fish tissue. The fish's size, weight, and sampling point were studied about microplastic uptake through two channels, digestion and respiration. From the results, the types of polymers identified in this study were polyethylene, polyvinyl chloride, and polyethylene terephthalate. Overall, 7.14% - 23.53% (average = 11.48%) of microplastics were identified in the D tract of bilih fish from sixteen different sampling points. While 7.69% - 17.39% (average = 11.85%) of microplastics were identified in the respiration of bilih fish. The highest percentage of the abundance of microplastic forms in the digestions identified was fiber at 70.42% and 66.82% in the digestions. At the same time, The lowest percentage identified was fragmented, with an average abundance of 29.58% in digestion and 33.32% in respiration. In conclusion, this study reveals the presence and impact of microplastics in Lake Singkarak, West Sumatra, on the bilih fish (Mystacoleucus padangensis). By examining the fish's digestive and respiratory systems and using FT-IR Spectroscopy, the research highlights the ecological and economic implications of microplastic pollution. These findings emphasize the need for targeted conservation and management strategies.Abstrak: Mikroplastik telah menjadi perhatian global karena distribusinya yang luas dan efek ekologisnya. Pemahaman tentang interaksi antara mikroplastik dengan ekosistem dinilai penting untuk penilaian risiko lingkungannya. Penelitian ini menganalisis kelimpahan dan distribusi mikroplastik di Danau Singkarak. Penelitian mikroplastik secara substansial masih sedikit untuk biota air tawar maka dilakukan penelitian untuk menentukan tingkat polusi mikroplastik pada jaringan ikan bilih. Ukuran, berat, dan titik sampling ikan diteliti dalam kaitannya dengan jerapan mikroplastik melalui dua saluran, yaitu digestif (pencernaan) dan respirasi (pernapasan). Dari hasil penelitian, jenis polimer yang teridentifikasi dalam penelitian ini adalah jenis polietilen, polivinil klorida, dan polietilen tereftalat. Secara keseluruhan 7,14% - 23,53% (rata-rata = 11,48%) mikroplastik teridentifikasi pada digestif ikan bilih dari enam belas titik sampling yang berbeda. Sementara 7,69% - 17,39% (rata-rata = 11,85%) mikroplastik teridentifikasi pada respirasi ikan bilih. Persentase kelimpahan bentuk mikroplastik tertinggi pada digestif yang diidentifikasi adalah fiber sebesar 70,42% dan 66,82% pada digestif. Sementara persentase terendah yang diidentifikasi adalah fragment dengan rata-rata kelimpahan sebesar 29,58% di digestif dan 33,32% di respirasi. Sebagai kesimpulan, penelitian ini mengungkap keberadaan dan dampak mikroplastik di Danau Singkarak, Sumatera Barat, pada ikan bilih (Mystacoleucus padangensis). Dengan memeriksa sistem pencernaan dan pernapasan ikan serta menggunakan Spektroskopi FT-IR, studi ini menunjukkan implikasi ekologis dan ekonomi dari polusi mikroplastik. Temuan ini menekankan perlunya strategi konservasi dan pengelolaan yang terarah.
MITIGASI RISIKO KECELAKAAN KERJA DI PELABUHAN DENGAN BOWTIE ANALYSIS: STUDI KASUS DI PT PELABUHAN INDONESIA REGIONAL 2 TELUK BAYUR Hendri, Ari Kurniawan; Ihsan, Taufiq; Silvia, Shinta; Maulidya, Annisa
J@ti Undip: Jurnal Teknik Industri Vol 20, No 3 (2025): September 2025
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jati.20.3.186-196

Abstract

Kegiatan bongkar muat di pelabuhan merupakan aktivitas yang kompleks dan berisiko tinggi, sehingga membutuhkan perhatian khusus terhadap keselamatan dan kesehatan kerja (K3). Penelitian ini bertujuan untuk mengidentifikasi, menganalisis, dan mengendalikan risiko kecelakaan kerja pada kegiatan bongkar muat di PT Pelabuhan Indonesia (Pelindo) Regional 2 Teluk Bayur. Metode yang digunakan adalah Bowtie Analysis, yang memungkinkan visualisasi dan analisis hubungan sebab-akibat dari suatu kejadian secara komprehensif.  Data dikumpulkan melalui observasi lapangan, kuesioner, wawancara dengan pekerja dan staf K3, serta studi literatur.  Hasil penelitian menunjukkan bahwa terdapat dua jenis kegiatan dengan risiko tinggi, yaitu penanganan general cargo dan penanganan peti kemas.  Ancaman utama yang dapat menyebabkan kecelakaan kerja antara lain human error, peralatan yang tidak layak, kurangnya penerangan, housekeeping yang buruk, dan cuaca buruk.  Konsekuensi dari kecelakaan kerja meliputi kematian, cedera fisik dan trauma psikologis, gangguan operasional bongkar muat, dan turunnya reputasi perusahaan.  Berdasarkan analisis risiko, dirumuskan rekomendasi strategi pengendalian risiko yang efektif, meliputi preventive control dan mitigation control, serta rekomendasi perbaikan prosedur K3 yang ada. Abstract[Mitigating Occupational Accident Risks in Ports with Bowtie Analysis: A Case Study at PT Pelabuhan Indonesia Regional 2 Teluk Bayur] Loading and unloading activities in ports are complex and high-risk operations, demanding specific attention to occupational health and safety (OHS). This study aims to identify, analyze, and control the risk of accidents in these activities at PT Pelabuhan Indonesia (Pelindo) Regional 2 Teluk Bayur. The Bowtie Analysis method is used for its comprehensive visualization and analysis of cause-and-effect relationships in accidents. Data was gathered through field observations, questionnaires, interviews with workers and OHS staff, and a literature review. The results reveal two high-risk activities: general cargo handling and container handling. Major threats leading to accidents include human error, equipment malfunction, poor lighting, inadequate housekeeping, and adverse weather. Consequences range from fatalities and physical injuries to psychological trauma, operational disruptions, and damage to the company's reputation. Based on the risk analysis, this study formulates recommendations for effective risk control strategies, including preventive and mitigation controls, along with suggestions for improving existing OHS procedures.Keywords: solar panel; renewable energy; optimization; hybrid
The Impact of Rainfall Fluctuations on the Trophic of Maninjau Lake Based on the Carlson Index and The Comprehensive Index (CTSI) Arlina, Lia; Komala, Puti Sri; Silvia, Shinta
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

Abstract

Maninjau Lake is experiencing increased eutrophication levels, negatively impacting water quality and the balance of its aquatic ecosystems. One of the factors that is thought to play a role in accelerating the process is rainfall fluctuation, which affects nutrient input from the water catchment area. This study aims to analyze the effect of rainfall fluctuation on the trophic status of Maninjau Lake using the Carlson Trophic State Index (TSI) and Comprehensive Trophic State Index (CTSI) methods. Water sampling was conducted at 10 stations over three periods: September 2022, January 2023, and March 2023, which represented seasonal variations. The parameters measured included chlorophyll-a, total phosphorus (TP), total nitrogen (TN), chemical oxygen demand (COD), and Secchi depth according to national standards. Rainfall data were obtained from BMKG stations and correlated with trophic index values. Results showed TSI values ranged from 55–72 and CTSI between 60–75, indicating eutrophic to hypereutrophic conditions. The highest trophic status occurred in periods of high rainfall, with a strong positive correlation between rainfall intensity and nutrient increase (r = 0.999 for TSI; r = 0.989 for CTSI). Rainfall plays a role as the main hydrometeorological driver of trophic dynamics, so adaptive management is needed to mitigate the impact of eutrophication under climate variability.
Investigation of PM10 and PM2.5 in Ambient Air: Spatial and Temporal Variations in the Western Area of a Cement Plant AD, Apriandi.; Bachtiar, Vera Surtia; Silvia, Shinta
CIVED Vol. 12 No. 1 (2025): March 2025
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v12i1.727

Abstract

The objective of this study is to evaluate the horizontal distribution of particulate matter concentrations (PM10 and PM2.5) in ambient air within the vicinity of the cement factory, with consideration for variations in spatial and temporal. The measurements were conducted using the EPAM 5000 instrument, with a total of six sampling points at distances of 0 km, 0.5 km, 1 km, 1.5 km, 2 km and 2.5 km, both during the day and at night, over a period of three days. Meteorological parameters such as air temperature, relative humidity, air pressure, and wind speed were measured to analyses their influence on particulate matter distribution. The findings revealed that the highest PM10 and PM2,5 concentrations were measured at the location closest to the factory (B1) with values of 113.98 μg/m³ and 75.73 μg/m³ at night and 52.80 μg/m³ and 28.27 μg/m³ during the day. A clear pattern of decreasing concentrations of both types of particulates as the distance from the source increases is evident, with a significant decrease occurring at a distance of 0-0.5 km. The PM2.5/PM10 ratio at night (0.67) was higher than during the day (0.56), indicating a greater contribution of fine particulates at night. Meteorological conditions play an important role in the distribution of particulate matter, in particular changes in wind direction and wind speed at night contribute to differences in the concentration and distribution of particulate matter. The results of this study indicate an increased risk of exposure to particulate matter in areas near factories, especially at night, which can be a basis for consideration in the preparation of air pollution control policies and efforts to safeguard public health.
Analysis of Microplastics on Digestive and Respiration System of Horse-Eye Jack Fish (Caranx latus) in Coastal Bungus Bay, West Sumatra Yuranda, Fitri; Zulkarnaini, Zulkarnaini; Silvia, Shinta; Ad’hani, Calysta Deli
Jurnal Penelitian Pendidikan IPA Vol 10 No 5 (2024): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i5.7099

Abstract

Microplastic pollution accumulates in the marine environment, thus impacting the health of marine organisms. The purpose of this study was to analyze and identify the abundance and characteristics of microplastics in Horse-Eye Jack fish (Caranx latus) in coastal Bungus Bay, West Sumatra. Fish samples were taken at three different locations, namely, Sako beach, Caroline Beach, and the east side of Bungus Bay. The average abundance of microplastics in horse-eye Jack fish samples in digestive is 21.63 ± 3.99 particles/fish, and in respiration, 9.23 ± 1.92 particles/fish. The shape identified forms of microplastics are fibers, films, fragments, granules, and foam, and the dominant color of microplastics is red. The most common size of microplastics found was <0.5 mm. FT-IR spectroscopy analysis showed that the polymer types of microplastics found were PE, PVC, PET, and PS. Statistical tests showed differences between the abundance of microplastics in two pathways of microplastic uptake (digestive and respiration), and the sampling location P<0.05. The results showed that microplastics were found in all Horse-Eye Jackfish samples in Bungus Bay, West Sumatra.These findings highlight microplastics' harm to the marine ecosystem and the necessity of managing plastic waste if we hope to avoid future plastic pollution catastrophes