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All Journal The Journal of Pure and Applied Chemistry Research Elkawnie Jurnal Zarah Orbital: Jurnal Pendidikan Kimia Jurnal Purifikasi Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jambura FIsh Processing Journal Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Journal Syifa Sciences and Clinical Research (JSSCR) Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Inovasi Teknik Kimia Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) JURNAL KIMIA SAINTEK DAN PENDIDIKAN Nian Tana Sikka: Jurnal Ilmiah Mahasiswa Serambi Engineering Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Damhil: Jurnal Pengabdian kepada Masyarakat J-CEKI Jurnal Pendidikan Kimia, Fisika dan Biologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Wiwin Rewini Kunusa
Universitas Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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ANALYSIS OF HAZARDOUS COMPOUNDS IN REFILLABLE ROLL-ON PERFUMES CIRCULATING IN GORONTALO CITY USING GC-MS Ibrahim, Indriyanti; Isa, Ishak; Rumape, Opir; Aman, La Ode; Kunusa, Wiwin Rewini; Kilo, Jafar La; La Kilo, Akram
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5101

Abstract

This study aims to analyze the potentially hazardous compounds in refillable roll-on perfumes. The analytical method employed was GC-MS. The results from GC-MS analysis revealed hazardous compounds including Alpha-Pinene with concentrations in samples A-E = 0.0048 ppm, 0.0035 ppm, 0.0105 ppm, 0.0038 ppm, 0.0034 ppm; Dipropylene glycol with concentrations in samples A-E = 0.0322 ppm, 0.0162 ppm, 0.0692 ppm, 0.0493 ppm, 0.0465 ppm; Limonene with concentrations in samples A-E = 0.0705 ppm, 0.0373 ppm, 0.0222 ppm, 0.1462 ppm; Linalool with concentrations in samples A-E = 0.0092 ppm, 0.0568 ppm, 0.0146 ppm, 0.1298 ppm, 0.1233 ppm; Linalyl Acetate with concentrations in samples A-E = 0.1207 ppm, 0.0719 ppm, 0.0413 ppm, 0.1418 ppm, 0.1285 ppm. The levels of these compounds in the samples are below exposure thresholds, suggesting their current use is considered safe. However, stringent government oversight is necessary for refillable perfume products available in Gorontalo City.
Analisis Kadar N-total Tanah pada Pertumbuhan Tanaman Jagung yang Diberikan Pupuk NPK-Biochar-Kitosan Roslina Imran; Astin Lukum; Wiwin Rewini Kunusa; Yuszda K. Salimi; Erni Mohamad; Arviani Arviani
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.384

Abstract

Corn (Zea mays) is a widely cultivated crop in Gorontalo and has high economic value as well as an important role in food security. Fertilization is one of the key factors that influence the productivity of corn plants. This research aims to determine the combination of NPK fertilizer doses granulated with Biochar-Chitosan in enhancing the growth and productivity of corn plants, as well as its impact on the quality of total N soil content. The study was conducted by planting corn, applying fertilizer, and observing its growth through measurements of plant height, leaf length, stem diameter, cob weight with husk, and cob weight without husk. The observational data were then analyzed descriptively, summarizing or classifying the data set to provide an overview of the data. Additionally, the analysis of soil N-total content was conducted before and after the application of fertilizers. The research results show that the combination of NPK-Biochar fertilizer doses has a significant impact on the growth and productivity of corn plants. The 7.5-gram NPK-Biochar fertilizer dose yielded the best results in increasing plant height, number of leaves, stem diameter, and cob weight with and without husks compared to other doses. Soil chemical property analysis also indicates that the application of NPK-Biochar fertilizer has a positive impact on the quality of the soil's total nitrogen content.
The Effect of Ethnoscience Approach Through Problem Based Learning Model on Chemical Literacy Ability of Class XI Students on Reaction Rate Material at SMA Negeri 7 Gorontalo Riryn Tahir; Hendri Iyabu; Julhim S. Tangio; Mangara Sihaloho; Wiwin Rewini Kunusa; Thayban Thayban
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.388

Abstract

The research aims to determine the effect of the ethnoscience approach through the problem-based learning model on the chemical literacy skills of Grade XI students in the reaction rate material at SMA Negeri 7 Gorontalo. The research employs a quasi experimental method with a nonequivalent control group design. The sample consisted of Grade XI IPA ( Natural Science) students from SMA Negeri 7 Gorontalo. The instrument used in this research was an essay test. Data processing and analysis were conducted using Microsoft Office Excel and SPSS version 16. The hypothesis test results on students’ post-test data using the Mann-Whitney test at a significance level of α = 0.05 showed that the Asymp. Sig. (2-tailed) value was less than 0.05 (0,002 < 0,05). Therefore, H1 was confirmed, and H0 was rejected. The N- Gain test results also indicated that the ethnoscience approach through the problem-based learning model was moderately effective in improving students’ chemical literacy skills in reaction rate material, with the experimental class achieving an N-Gain score percentage of 57.13% (moderately effective category), while the control class achieved a percentage of 31.42% (ineffective category). In conclusion, the ethnoscience approach through the problem-based learning model significantly affects students’ chemical literacy skills in reaction rate material.
Identifikasi Senyawa Metabolit Sekunder Ekstrak Metanol Daun Pletekan (Reullia tuberosa L.) Nur Rafida Akub; Nurhayati Bialangi; Weny J.A Musa; Yuszda K. Salimi; Wiwin Rewini Kunusa; Ahmad Kadir Kilo
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.392

Abstract

Indonesia is renowned for its abundant and diserve natural resources, including various plants. Many medicinal plants are traditionally utilized due to their therapeutic benefits. The utilization of minnieroot leaves as a traditional medicine shuld be supported by comprehensive studies to identify the active compounds, thereby omproving their quality, safety and afficacy. Secondary metabolites in minnieroot, particularly in the leaves, contain polyphenolic compounds, while the roots are known to contain flavonoids. This study aims to identify secondary metabolite compounds in minnieroot (Reullia tuberosa L.) leafs methanol extract. The study utilized methanol as a solvent for the extract solution became colorless, resulting in a extract yield of 8,02% of the leaf’s weight. The qualitative test confirmed the presence of secondary matebolites, specifically flavonoids and tannin in the methanol extract of minnieroot leaves. The final result from column chromatography separation shows that crystals are formed in the sixth vial. The crystals areb brownish blackn in color and weigh 0, 1235 g.
The Effect of Contextual Teaching and Learning (CTL) Model on Reaction Rate Material on Critical Thinking Ability and Character of Student Arwin, Muh.; Pikoli, Masrid; Sihaloho, Mangara; Kunusa, Wiwin Rewini; Tangio, Julhim S.; Munandar, Haris
Jambura Journal of Educational Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v7i1.28723

Abstract

This research investigates the impact of the Contextual Teaching and Learning (CTL) model on critical thinking abilities and student character in the reaction rate topic at SMA Negeri 3 Gorontalo Utara. This research employs a quantitative methodology with a near-experimental design, specifically employing a one-group pre-test and post-test design. Data were gathered through questionnaires and tests. The study's population consisted of grade XI students at SMA Negeri 3 Gorontalo Utara throughout the opening term of the academic cycle for 2024-2025. A total sampling method was used, selecting 50 students from two classes who enrolled in chemistry specialization. The findings indicate that the application of the CTL model led to an improvement in critical thinking skills, with the experimental class showing a mean pre-test result of 37.56% and a post-test result of 84.22%, whereas the replication group recorded pre-test and post-test averages of 37.33% and 83.89%, respectively. As for character growth, the experimental group displayed an average score of 80.13%, while the replication group showed 79.90%. Both classes demonstrated significant progress, as shown by the consistency of the results in both groups. The outcomes of the paired sample t-test reveal a noteworthy value of 0.000 < 0.05, prompting the dismissal of H0 and the endorsement of Ha, confirming that the CTL model positively affects critical thinking skills and student character in reaction rate material.
Identifikasi Miskonsepsi Siswa Menggunakan Test Diagnostic Five Tier Multiple Choice pada Materi Reaksi Redoks di SMAN 1 Limboto Sufriyanto Ibrahim; Erni Mohamad; Haris Munandar; Masrid Pikoli; Wiwin Rewini Kunusa; Julhim S. Tangio; Erga Kurniawati
J-CEKI : Jurnal Cendekia Ilmiah Vol. 3 No. 6: Oktober 2024
Publisher : CV. ULIL ALBAB CORP

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

Abstract

Redox reactions are a type of chemical material that contains many concepts and rules that are recognized as difficult to comprehend and comprehend and often give rise to misconceptions in students. This research aims to find out the misconceptions that occur among students in understanding redox reaction material and find out the source of the causes of students' misconceptions. The method used in the research is descriptive qualitative. This research was carried out in the odd semester of the 2023/2024 academic year. The subjects of this research were class XII MIPA students at SMAN 1 Limboto with a total sample of 181 people. Identification of misconceptions is carried out using a five-tier multiple-choice test instrument. Student answers from the test are then analyzed and categorized based on the student's level of conception. The research results show that the average percentage of students' conceptions on redox reaction material is 28.6% understanding the concept, 48.2% misconceptions, and 23.2% not understanding the concept. Apart from that, the highest cause of misconceptions comes from personal thoughts at 91.1%.
ANALISIS KUALITAS AIR LIMBAH TAMBAK UDANG DI KECAMATAN MANANGGU MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Putri Amalia Ngabito; Nurhayati Bialangi; Wiwin Rewini Kunusa
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16657

Abstract

Limbah tambak udang mengandung zat organik dan anorganik yang dapat mempengaruhi kualitas air di sekitarnya, khususnya di sungai dan laut. Penelitian ini bertujuan untuk menganalisis kualitas air limbah tambak udang di Kecamatan Mananggu, Kabupaten Boalemo, dengan mengukur parameter fisika dan kimia seperti suhu, TDS, TSS, salinitas, pH, DO, nitrat, nitrit, sulfat, amonia, fosfat, COD, dan BOD. Sampel diambil dari tiga titik berbeda: Titik 1 (drainase tambak), Titik 2 (aliran sungai), dan Titik 3 (muara). Analisis menggunakan metode SNI dengan Spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa parameter suhu (30-31°C), TSS (15-17 mg/L), salinitas (5.000-35.000 mg/L), pH (6-7), DO (7-8 mg/L), nitrat (4-6 mg/L), nitrit (0,5-0,9 mg/L), dan BOD (11-16 mg/L) masih sesuai standar baku mutu. Namun, TDS (1.186-2.725 mg/L), sulfat (16,44-16,67 mg/L), amonia (0,66-1,16 mg/L), fosfat (0,63-0,95 mg/L), dan COD (69-98 mg/L) melebihi batas baku mutu sesuai KEPMEN-Kelautan & Perikanan No. 28 Tahun 2004.
ANALISIS KANDUNGAN LOGAM TIMBAL (Pb) DAN KADMIUM (Cd) DI PANTAI KURENAI DAN PERAIRAN PELABUHAN DI GORONTALO Febriyanti Andimala; Hendri Iyabu; Jafar La Kilo; Ishak Isa; Nita Suleman; Wiwin Rewini Kunusa
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16267

Abstract

Logam berat adalah unsur alam yang tidak dapat dihancurkan. Penelitian ini bertujuan untuk mengetahui keberadaan dan kadar logam Pb dan Cd di Pantai Kurenai dan Pelabuhan Gorontalo. Sampel dianalisis menggunakan AAS. Hasil analisis menunjukkan kadar Pb di Pantai Kurenai: titik I = 0,0240 mg/L, titik II = 0,0843 mg/L, dan titik III = 0,1084 mg/L. Di Pelabuhan Gorontalo, kadar Pb: titik I = 0,1325 mg/L, titik II = 0,6144 mg/L, dan titik III = 0,2289 mg/L. Kadar Cd di Pantai Kurenai: titik I = 0,0076 mg/L, titik II = 0,0218 mg/L, dan titik III = 0,0189 mg/L. Di Pelabuhan Gorontalo, kadar Cd: titik I = 0,0047 mg/L, titik II = 0,0005 mg/L, dan titik III = 0,0100 mg/L. Menurut Peraturan Pemerintah No. 22 Tahun 2021, kadar Pb di Pantai Kurenai dan Pelabuhan Gorontalo telah melebihi standar, sementara kadar Cd di Pantai Kurenai telah melebihi standar, namun di Pelabuhan Gorontalo belum.
Faktor Penyebab Kesulitan Siswa SMA Memahami Kesetimbangan Kimia : Literature Review Yestin Takowa; Julhim S Tangio; Thayban Thayban; Wiwin Rewini Kunusa; Erni Mohamad
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.290

Abstract

Understanding chemical equilibrium concepts poses significant challenges for high school students due to the topic’s abstract and complex nature. This literature review identifies key factors contributing to these difficulties, including widespread misconceptions, cognitive and pedagogical barriers, and environmental influences such as family support and learning resources. The review highlights the importance of constructivist and cognitive learning theories in designing effective instructional strategies that actively engage students and facilitate deeper conceptual understanding. Furthermore, the integration of educational technologies—such as interactive simulations and virtual laboratories—provides enriched learning experiences that help overcome conceptual misunderstandings. An integrated approach combining innovative teaching methods and technology use is recommended to enhance students’ comprehension of chemical equilibrium. Future research should focus on practical applications of these models and evaluate their effectiveness across diverse educational settings.
Edukasi Pemurnian Logam Tembaga melalui Elektrolisis untuk Siswa SMA Terpadu Wira Bhakti Gorontalo Sukamto, Kostiawan; Lukum, Astin; La Kilo, Akram; Kunusa, Wiwin Rewini
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: June 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v4i1.33074

Abstract

This community service activity aims to provide students at SMA Terpadu Wira Bhakti Gorontalo with an understanding of the copper purification process through electrolysis and the application of environmentally friendly technology in the metallurgy industry. The activity was carried out using a combined approach of theoretical instruction and direct laboratory practicum. Students learned the basic principles of electrolysis, the mechanism of copper purification, and how this technology reduces environmental impact compared to traditional methods. During the practicum, students had the opportunity to apply the theory they had learned, observe the electrolysis process, and understand the results of copper purification. The evaluation results indicate that the activity was effective in enhancing students' understanding of electrolysis and the importance of sustainable technology in the industry. Additionally, the activity successfully sparked students' interest in the field of engineering and environmentally friendly industries.
Co-Authors A, Anisyah A. MS. A. Mu’thi Andy Suryadi Adam Mustapa, Muhammad Ahmad Kadir Kilo Akram La Kilo Andimala, Febriyanti Annisa Untuba Arviani Arviani Arviani Arviani Arviani, Arviani Arwin, Muh. Astin Lukum Astin Lukum Basalama, Muhamad Tri Rezki Botutihe, Deasy N. Djalil, Jhodi Pratama Doly Prima Silaban Endah Nurrohwinta Djuwarno Erga Kurniawati Erni Mohamad Febriyanti Andimala Febriyanti Andimala Frida Maryati Yusuf giu, fitri ani Guge, Sri Rahmawati Hadji, Fitri Haris Munandar HARIS MUNANDAR Hendri Iyabu Hendri Iyabu Hendri Iyabu Ibrahim, Indriyanti Ibrahim, Rahmi I Inrawani Inrawani Ishak Isa Ishak, Candrawati Ishka Isa Jafar La Kilo Jafar La Kilo Julhim S Tangio Julhim S Tangio Julhim S. Tangio Karim, Cecy Rahma Karmila Bilondatu Kostiawan Sukamto, Kostiawan La Alio La Ode Aman La Ode Aman Mahdi Kilo Malae, Ismail Mangara Sihaloho Mangara Sihaloho Mardjan Paputungan Marnila Marnila Masrid Pikoli Meylani Frisilia Meyrin Hamzah Moh Izwarto Piyohu Moh. Fajri Moh. Fajri Langgene Muh. Arwin Muhamad Handoyo Sahumena Muhammad Taupik Mulyani Zahra Paramata Murjiatunur Amboy Musa, Weni J.A Musa, Weny A Musa, Weny J.A. Najmah, Najmah Netty Ino Ischak Ngabito, Putri Amalia Nita Suleman Nita Suleman Nur Isty Fidya Nur Rafida Akub Nur&#039;afni Suaib Nurfadilah M. Kasim Nurhayati Bialangi Nurhayati Bialangi Opir Rumape Pakaya, Agustina H. Pakaya, Sitti Masita A. Palari, Nuraini Pinangi, Dea Putri Amalia Ngabito Ramli Utina Riryn Tahir Risti Ristianingsih Badu Romario Abdullah Roslina Imran Rusmani Tasanif Sahami, Ulin Sahrial Lakasim Siti Hadijah Lamato Bempa Siti Hairunisa Kandusu Sri Rahayu Latif Sriyana Ohi Suci Damayanti Sufriyanto Ibrahim Syakina Marilan Daaliwa Thayban Thayban Thayban, Thayban Umadji, Nur Inda R Umadji, Nur Inda R. Vera Yustika Wa Ode Nurlisa Weny J.A Musa Wina Zulfiana Tulie Yestin Takowa Yusuf, Risciana Yuszda K Salimi Yuszda K. Salimi Zikran Abdullah Zulfa K Muslimin Zulfikar Ahmad