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All Journal Prosiding Seminar Nasional MIPA Jurnal Sains dan Teknologi International Journal of Community Service Learning International Journal of Natural Science and Engineering INTERNATIONAL JOURNAL OF APPLIED CHEMISTRY RESEARCH
I Gusti Ngurah Agung Suryaputra
Program Studi Kimia Terapan, Jurusan Kimia, Universitas Pendidikan Ganesha
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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Variabilitas Dissolved Organic Carbon (DOC) dan Total Dissolved Nitrogen (TDN) di Teluk Meksiko Suryaputra, I Gusti Ngurah Agung
Prosiding Seminar Nasional MIPA 2013: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2013
Publisher : Prosiding Seminar Nasional MIPA

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Abstract

Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh pasang surut terhadap konsentrasi dan pencampuran Dissolved Organic Carbon (DOC) dan total dissolved nitrogen (TDN) di West Pass, Gulf of Mexico. Sampel air diambil setiap satu jam sekali selama 24 jam, baik dari permukaan mapun dasar perairan. Konsentrasi DOC diukur dengan menggunakan DOC Analyzer. Hasil analisis konsentrasi DOC menunjukkan adanya dua endmembers, yaitu air laut dari Gulf of Mexico dan air tawar dari Apalachicola River, yang bercampur secara konservatif. Akan tetapi, analisis terhadap konsentrasi TDN menunjukkan hal yang berbeda. Pada permukaan perairan, konsentrasi TDN didominasi oleh pencampuran dua endmember dari air laut dan air tawar. Sedangkan konsentrasi TDN di dasar perairan dipengaruhi oleh proses-proses lain di sana.
KARAKTERISASI DISSOLVED ORGANIC MATTER (DOM) DI PANTAI PARIWISATA DAN PANTAI NATURAL Suryaputra, I Gusti Ngurah Agung
JST (Jurnal Sains dan Teknologi) Vol 10, No 1 (2021)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.942 KB) | DOI: 10.23887/jst-undiksha.v10i1.33114

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan karakter dissolved organic matter (DOM) pada pantai pariwisata yang didominasi oleh kegiatan hotel dan rumah makan, pantai pariwisata yang didominasi oleh wisata air, dan pantai natural di pesisir Utara Buleleng. DOM diukur dalam bentuk dissolved organic carbon (DOC) menggunakan Shimadzu TOC-L Analyzer dan chromophoric dissolved organic matter (CDOM) menggunakan Shimadzu UV-1800 Spectrophotometer. Selain itu, konsentrasi nutrien terlarut dalam air dianalisis menggunakan Palintest, dan pH dan oksigen terlarut diukur secara in-situ menggunakan sensor. Hasil penelitian menunjukkan bahwa konsentrasi nutrien dari tertinggi ke terendah ditemukan berturut-turut pada pantai pariwisata yang didominasi kegiatan hotel dan rumah makan, pantai pariwisata yang didominasi kegiatan wisata air, dan pantai natural. Hasil analisis DOM dalam bentuk DOC dan CDOM mengindikasikan bahwa pantai pariwisata yang didominasi kegiatan hotel dan rumah makan memiliki karakteristik DOM yang paling berbeda, yang dipengaruhi oleh kegiatan pariwisata terkait. DOM pada pantai ini memiliki sifat kurang aromatis, lebih labil, dan memiliki berat molekul lebih tinggi.
Variabilitas Dissolved Organic Carbon (DOC) dan Total Dissolved Nitrogen (TDN) di Teluk Meksiko I Gusti Ngurah Agung Suryaputra
Prosiding Seminar Nasional MIPA 2013: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2013
Publisher : Prosiding Seminar Nasional MIPA

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Abstract

Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh pasang surut terhadap konsentrasi dan pencampuran Dissolved Organic Carbon (DOC) dan total dissolved nitrogen (TDN) di West Pass, Gulf of Mexico. Sampel air diambil setiap satu jam sekali selama 24 jam, baik dari permukaan mapun dasar perairan. Konsentrasi DOC diukur dengan menggunakan DOC Analyzer. Hasil analisis konsentrasi DOC menunjukkan adanya dua endmembers, yaitu air laut dari Gulf of Mexico dan air tawar dari Apalachicola River, yang bercampur secara konservatif. Akan tetapi, analisis terhadap konsentrasi TDN menunjukkan hal yang berbeda. Pada permukaan perairan, konsentrasi TDN didominasi oleh pencampuran dua endmember dari air laut dan air tawar. Sedangkan konsentrasi TDN di dasar perairan dipengaruhi oleh proses-proses lain di sana.
PENGARUH HUTAN MANGROVE TERHADAP ABSORBANSI CHROMOPHORIC DISSOLVED ORGANIC MATTER (CDOM) DAN NUTRIEN DI PANTAI GILIMANUK I Gusti Ngurah Agung Suryaputra
International Journal of Applied Chemistry Research Vol. 3 No. 1 (2021)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijacr.v3i1.59818

Abstract

Pantai Gilimanuk adalah salah satu pantai di Bali dengan hutan mangrove yang panjang. Hutan mangrove adalah salah satu ekosistem yang paling produktif di bumi. Sistem bakau adalah sumber organic matter (OM) yang sangat produktif yang dapat ditransmisikan ke perairan pantai yang berdekatan melalui ekspor detritus dan organisme hidup. Penelitian ini bertujuan untuk mengetahui pengaruh keberadaan hutan mangrove terhadap parameter in-situ, absorbansi CDOM, kadar nutrient dan kadar Total Organic Carbon (TOC). Pengukuran salinitas, suhu, pH, DO dan TDS dilakukan secara in-situ menggunakan alat water quality checker. Pengukuran nilai absorbansi CDOM dan nutrien dilakukan dengan menggunakan instrumen spektrofotometer Ultraviolet Visible (UV-Vis). Pengukuran konsentrasi TOC  dilakukan dengan metode titrasi. Hasil penelitian menunjukkan bahwa hutan mangrove menunjukkan pengaruh terhadap nilai pH, suhu, absorbansi CDOM dan TOC. Sementara hutan mangrove tidak terlihat mempengaruhi parameter salinitas, TDS, konduktivitas, DO dan nutrien. Ketika pasang terjadi penurunan nilai pH dan suhu, sedangkan ketika terjadi surut terjadi peningkatan nilai pH dan suhu. Nilai absobansi CDOM melalui data spectral slope (S275-295) memberikan informasi bahwa ketika pasang absorbansi CDOM menurun, hal ini menunjukkan sumber CDOM berasal dari daratan yang di pesisirnya banyak terdapat hutan mangrove. Pada saat surut, nilai absorbansi CDOM meningkat hal ini menunjukkan bahwa CDOM juga berasal dari daratan.
Efek Fotodegradasi terhadap Chromophoric Dissolved Organic Matter (CDOM) dan Nutrien pada Air Danau I Gusti Ngurah Agung Suryaputra
International Journal of Applied Chemistry Research Vol. 3 No. 2 (2021)
Publisher : Universitas Pendidikan Ganesha

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Abstract

This study's objective was to determine the effect of photodegradation on CDOM and nutrients in Lake Beratan, specifically in a tourism-dominated area. Subjects in this study are the water of Lake Beratan, while the object of this study is the absorbance CDOM, nutrient concentration, DO, pH, and temperature. We measured absorbance and nutrient concentrations using a Shimadzu UV-1800 UV-Vis Spectrophotometer. The spectral slope (S) and E2:E3 ratio were calculated from its absorbance. The result shows the possibility of misinterpretation due to the use of S or E2:E3 alone to express photodegradation. Either one demonstrates that photodegradation seems to decompose CDOM less than biodegradation. However, if we notice its absorbance value, it is clear that the opposite phenomenon, which is reasonable, takes place. We, therefore, conclude that CDOM photodegradation cannot be concluded from S and E2:E3 alone, but its absorbance is also necessary to lead to the right interpretation. Besides CDOM absorbance, photodegradation also affects nutrients in the water. Photodegradation decomposes organic materials into inorganics, whereas organic nitrogen is turned into ammonia and is then oxidised into nitrite and nitrate via nitrification. Overall, photodegradation decreases the concentration of nutrients dissolved in water.
Fotodegradasi dan Biodegradasi Chromophoric Dissolved Organic Matter (CDOM) di Pantai Lovina I Gusti Ngurah Agung Suryaputra
International Journal of Applied Chemistry Research Vol. 4 No. 1 (2022)
Publisher : Universitas Pendidikan Ganesha

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Abstract

This study aimed at determining the effect of photodegradation on CDOM and nutrient alteration on Lovina Beach, especially in a tourism-dominated area. The subject of this study was seawater collected from Lovina Beach and filtered using GF/F 0.7 m with the help of a vacuum pump. The objects of this study were CDOM absorbance and nutrient concentration. Filtered seawater was placed into two containers: one was under sunlight for photodegradation, and the other was kept away from light for biodegradation. A water sample was collected every 2 hours for a total of 12 hours from both containers. Absorbance and nutrient concentration were measured using a UV-1800 Shimadzu UV-Vis Spectrophotometer. The absorbance spectral slope (S) and E2:E3 ratio were calculated from the absorbance. The result shows the possibility of misinterpretation due to the use of S or E2:E3 alone to express photodegradation. Either one demonstrates that photodegradation seems to decompose CDOM less than biodegradation. However, if we notice its absorbance value, it is clear that the opposite phenomenon, which is reasonable, takes place. We, therefore, conclude that CDOM photodegradation cannot be concluded from S and E2:E3 alone, but its absorbance is also necessary to lead to the right interpretation. Beside CDOM absorbance, photodegradation also affects nutrients in the water. Photodegradation decomposes organic materials into inorganics, whereas organic nitrogen is turned into ammonia and is then oxidized into nitrite and nitrate via nitrification. Overall, photodegradation decreases the concentration of nutrients dissolved in water.
Safety-Based Dolphin Tourism Supports Tourism Development Werang, Basilius Redan; Anak Agung Gede Agung; Alexander Hamonangan Simamora; I Gusti Ngurah Agung Suryaputra
International Journal of Community Service Learning Vol. 8 No. 4 (2024): November
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijcsl.v8i4.85129

Abstract

Dolphin tourism is one of the famous tourist attractions and is a characteristic of Lovina Beach. this activity can potentially be a source of income for the local community. This dolphin tour is very popular with domestic and foreign tourists, and not a few capture moments during dolphin tours; this triggers tourists to pay less attention to safety during dolphin tours. This community service aims to improve security services (safety guards) in guiding tourists and to improve digital-based dolphin tourism information service facilities. The method applied is training and community service; the subject of the study was the Segara Wangi group, with a total of 30 members. The results of the training and community service showed a significant increase in the average ability of participants after participating in the training. The results of the data analysis showed that the implemented community service program was successful in increasing the knowledge and skills of participants related to marine tourism security management and Dolphin Tourism WEB Booking management.
Time Series Analysis of Chromophoric Dissolved Organic Matter (CDOM) at Perancak Estuary Suryaputra, I Gusti Ngurah Agung
International Journal of Natural Science and Engineering Vol. 7 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v7i1.59812

Abstract

This study aimed at determaining the effect of sea tides on  changes of CDOM,  in-situ parameters and  nutrients on Perancak Estuary. The subject of  this study was estuary water collected from Estuary Perancak and filtered using GF/F 0.7 μm with help of injection. The objects of this study were CDOM absorbance, nutrients concentration and parameters in-situ. Sampel collected every 1 hour  once for 25 hours, were measured in-situ parameters. Filtered estuary water was placed into sample bottles and placed in a box  was kept away from light. Absorbance and nutrients concentration were measured  using  UV-1800 Shimadzu UV-Vis Spectrophotometer. Absorbance spectral slope (S) and  E2:E3 were calculated from the absorbance. Result shows that S275-295 and E2:E3 had  a negative correlation  with water level, while SR did not show any positive and negative correlation  with water level.  In addition most of  in-situ  parameters show a positive correlation with  water level and some of nutrients show a negative correlation with water level.
KARAKTERISASI DISSOLVED ORGANIC MATTER (DOM) DI PANTAI PARIWISATA DAN PANTAI NATURAL Suryaputra, I Gusti Ngurah Agung
JST (Jurnal Sains dan Teknologi) Vol. 10 No. 1 (2021)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.942 KB) | DOI: 10.23887/jstundiksha.v10i1.33114

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan karakter dissolved organic matter (DOM) pada pantai pariwisata yang didominasi oleh kegiatan hotel dan rumah makan, pantai pariwisata yang didominasi oleh wisata air, dan pantai natural di pesisir Utara Buleleng. DOM diukur dalam bentuk dissolved organic carbon (DOC) menggunakan Shimadzu TOC-L Analyzer dan chromophoric dissolved organic matter (CDOM) menggunakan Shimadzu UV-1800 Spectrophotometer. Selain itu, konsentrasi nutrien terlarut dalam air dianalisis menggunakan Palintest, dan pH dan oksigen terlarut diukur secara in-situ menggunakan sensor. Hasil penelitian menunjukkan bahwa konsentrasi nutrien dari tertinggi ke terendah ditemukan berturut-turut pada pantai pariwisata yang didominasi kegiatan hotel dan rumah makan, pantai pariwisata yang didominasi kegiatan wisata air, dan pantai natural. Hasil analisis DOM dalam bentuk DOC dan CDOM mengindikasikan bahwa pantai pariwisata yang didominasi kegiatan hotel dan rumah makan memiliki karakteristik DOM yang paling berbeda, yang dipengaruhi oleh kegiatan pariwisata terkait. DOM pada pantai ini memiliki sifat kurang aromatis, lebih labil, dan memiliki berat molekul lebih tinggi.
CHROMOPHORIC DISSOLVED ORGANIC MATTER (CDOM) DAN NUTRIEN TERLARUT DI SUMBER AIR DI BALI UTARA Suryaputra, I Gusti Ngurah Agung
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 1 (2023): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i1.59811

Abstract

The objective of this study was to determine the absorbance of chromophoric dissolved organic matter (CDOM) and dissolved nutrient concentration in a spring water located at Sanggalangit, Kecamatan Gerokgak, Kabupaten Buleleng in North Bali, and to analyze the effect of rainfall on the water. The subjects in this study were filtered spring water using 0.7 µm GF/F filter paper. The object of this research were CDOM absorbance and dissolved nutrients concentration. Absorbance and dissolved nutrients concentration was measured using UV-Vis spectrophotometer. The absorbance was then used to calculate S275-295, S350-400, and E2:E3. Results show that S275-295 and S350-400 have a negative trend with rainfall. Rainfall affects E2:E3 but does not influence dissolved nutrients concentration (nitrate, nitrite, ammonia, and phosphate) and pH parameters both in environmental conditions when it is raining or hot. According to the regulation, the quality of spring water is categorized good, chemically.
Co-Authors Alexander Hamonangan Simamora Anak Agung Gede Agung Basilius Redan Werang