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Lantanida Journal
Published by Universitas Islam Negeri Ar-Raniry Banda Aceh
ISSN : 23563133     EISSN : 25489062     DOI : -
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education
Lantanida Journal is an, scientific journal open-access containing results research, literature reviews and recent news on science and technology in the areas of educational learning and learning development. This journal is formed from the initiative of Leaders Chemistry departmen, lecturers, staff, alumni and students of Chemistry Education Department UIN Ar-Raniry Banda Aceh.
Arjuna Subject : -
Articles 193 Documents
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OPTIMASI ELEKTRODA PASTA KARBON (EPK) TERMODIFIKASI DALAM PENGUKURAN BUTYLATED HYDROXYTOLUENE (BHT) Ahmad Ma'ruf
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14551

Abstract

BHT as an antioxidant is essential because it can prevent the rate of oxidative reactions from organic compounds present in the product. However, the use of BHT can have harmful effects on health because it can trigger a carcinogenic reaction. Therefore, precise and accurate instruments are needed to measure BHT concentrations. Carbon paste electrode is a renewable material that can analyze a compound currently being developed and attracts much attention. EPK has a stable response, low electrical resistance, a quickly renewable surface for electron exchange, and can be adapted for various chemical compound detection applications. EPK modified with MIP has high chemical and physical stability, an inexpensive preparation process, excellent selectivity, and sensitivity but also a fast response to the target compound. This study aims to improve the performance of MIP-modified EPK to measure BHT optimally in terms of pH, concentration, and solution components. Optimization of EPK in BHT measurement was carried out using an experimental method using voltammetry with the CV technique. The optimum composition obtained is 1:3, the optimum cycle for electropolymerization is five cycles, and the optimum pH for BHT measurement is pH 5 with a peak oxidation current of 18,937 µA. EPK-MIP optimization results obtained can be used to measure BHT with optimal performance.
PROJECT-BASED LEARNING PADA MATA KULIAH KIMIA ANALITIK DASAR MENGGUNAKAN YOUTUBE UNTUK PENINGKATAN KETERAMPILAN ABAD 21 Abraham Mora; Hokcu Suhanda; Triannisa Rahmawati
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14509

Abstract

In recent years, the development of information and digitalization is growing very rapidly, especially in the state of distance learning due to the COVID-19 pandemic. In addition, this era leads to the need for 21st-century skills possessed by students to be survived amid several disruptions in various conventional fields. Assignments based on project-based learning have been carried out to the chemistry students at Indonesia University of Education in the Basic Analytical Chemistry course to learn the effect of project based learning using youtube as the publication media to improve various 21st-century skills. 6 videos explained the advanced methods applied in the analytical chemistry field have been resulted in. These videos were uploaded to YouTube with a total of 2662 viewers, 1577 likes, as well as 235 comments. Descriptive studies were used as a research method to get some respon from students according to the implementation of 21st-century skills. In addition, we collected qualitative respons from viewers related to the content of explanatory videos that have been made. Through a survey, around 85% of students stated agree and strongly agree that this project-based learning could improve their collaboration skill (4.34/5 scale), scientific literature literacy (4.40/5), creative thinking (4,49/5), communication (4.54/5) as well as critical thinking (4.7/5). Finally, positive and supportive respon from audiences strengthened arguments that this assignment could be exercising the teaching and communication skills of students
PENGEMBANGAN MEDIA PEMBELAJARAN GOOGLE SITES PADA MATERI HIDROLISIS GARAM BERBASIS PENDEKATAN KONTEKSTUAL Dewi Ratna Sari; Retno Aliyatul Fikroh; Riawati Rahayu; Pandu Ridzaniyanto
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14497

Abstract

Google sites can be used as an alternative interactive chemistry learning media, especially on salt hydrolysis material. This research aims to develop learning media in the form of google sites based on a contextual approach to salt hydrolysis material and to test the quality of the developed media. The research carried out is in the form of development research using a 4-D research model (define, design, develop, and disseminate), but is only limited to the develop. Assessment of product quality is carried out using a Likert obtained from the validator and student responses using a Guttman. The results of the assessment of product quality by material experts obtained a percentage of 88.63% in the Very Good category (VG), the assessment by media experts obtained a percentage of 92.5% in the Very Good category (VG), and the assessment by reviewers obtained a percentage of 90.47% in the form of the Very Good (VG) category and positive responses by students who obtained a percentage of 94% in the Very Good (VG) category. Based on the assessments of media experts, material experts, reviewers, and student responses, it can be concluded that the developed media can be used as an alternative medium for chemistry learning on salt hydrolysis material.
PENGEMBANGAN PERMAINAN TRADISIONAL CONGKLAK PADA MATERI KONFIGURASI ELEKTRON UNTUK PESERTA DI SMA/MA Noviyanti Dwi Astuti; Laili Nailul Muna
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14679

Abstract

The material of electron configuration is the basis for understanding an atom. Many students have misconceptions about learning this material. The purpose of this research is to develop a traditional game of congklak that can increase students' motivation to learn electron configuration material. The method used in this study uses a 4-D model consisting of four stages, namely: definition, design, development, and dissemination. However, the dissemination stage is not carried out. The assessment of the traditional game of Congklak is carried out by material experts, media experts, reviewers, reviewers, and high school or MA MIPA students. The instruments used to assess quality were a Likert scale questionnaire and a Guttman scale questionnaire. The assessment of media development shows good and ideal results with the following scores: material expert lecturers are 94.00% in the Very Good category, media expert lecturers are 95.50% in the Very Good category, and reviewers (chemistry teachers) get an average score with a percentage of 94.82% in the Very Good category, and the results of student responses to the media showed a percentage of 96.36%. The traditional game of congklak can be used as an alternative to increase students' motivation and enthusiasm for learning electron configuration material in SMA/MA.
MODEL MENTAL SISWA SMA DALAM MEMAHAMI KONSEP LARUTAN ELEKTROLIT DAN NON-ELEKTROLIT Suliyana Ibrahim; Mangara Sihaloho; Masrid Pikoli
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14533

Abstract

This objective of this study for investigate mental models of SMA Negeri 1 Telaga students about electrolyte and non-electrolyte solutions. Data was collected by giving a mental model test in the form of two-level multiple choice in class X involving 196 students. The results showed that the analysis of the mental model of students of class X science about electrolyte and non-electrolyte solutions was 38% classified as scientific mental models and 62% alternative mental models, which consisted of 30% partially correct mental models, 32% misconceptions (Specific Misconception) and 0% no response (No Responds). Thus, most students do not yet have a complete mental model in understanding the material of electrolyte and non-electrolyte solutions.
CHEMICAL COMPOUNDS OF BEES IN QUR’AN Zulkarnain Zulkarnain; Suprapto Suprapto
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14900

Abstract

Qur’an surah An-Nahl verses 68 and 69 provide information about the nature of bees and their benefits for human life. Allah inspires bees to build nests and find food in trees, mountains, and places made by humans. This study aims to examine scientific information on bees in Surah An-Nahl verses 68 and 69. The research method is library research. The results showed that bees in Surah An-Nahl verses 68 and 69 produce honey, have a good life, have great teamwork, and give benefits to human life. Bee gives people good role models for human society, teamwork, and lifestyle. In science, bees produce pheromone chemical compounds that play a role in communication between bees in the colony. The pheromones produced by the queen bee can regulate the male bees and worker bees to be loyal to the queen bee and carry out their duties well. Qur’an Surah An-Nahl verses 68 and 69 give us information about the bee and honey. Allah gives a message to people to live like a bee to have a good social, good lifestyle, don’t destroy the environment, and give benefits to people like honey. Rasullullah advised us to consume honey for treatment. Honey functions as an antioxidant, anticancer, and energy source, healthy heart, control sugar level, and maintain a healthy body. Bee food is nectar, good nectar will produce high-quality honey. Chemical compounds that are often found in honey like glucose, flavonoid, alkaloid, saponin, and glycoside.
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS GOOGLE SITES BERMUATAN CHEMO-ENTREPRENEURSHIP PADA MATERI GUGUS FUNGSI SENYAWA KARBON Riawati Rahayu; Retno Aliyatul Fikroh; Dewi Ratna Sari; Pandu Ridzaniyanto
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14496

Abstract

Google sites can be used as interactive chemistry learning media, especially on the functional group material of carbon compounds. This study aims to develop learning media based on google sites containing chemo-entrepreneurship (CEP) on the functional group material of carbon compounds and determine product quality based on the assessment of material experts, media experts, reviewers (high school chemistry teachers), and student responses. Research and Development (R&D) is a research method with a 4-D development model consisting of define, design, develop, and disseminate but limited to the develop stage. Product quality was assessed by a material expert, a media expert, five reviewers, and ten students responded. Quality assessment was carried out using the expert judgment using a Likert scale while the response data used the Guttman scale. The product developed is a website developed through the Google Sites containing a home page, materials, evaluations, unique facts, and references. The results of the assessment according to material experts, media experts and reviewers were 89.28%, 87.5% and 94.41%, respectively, and received a positive response from students of 97.5%. Based on these results, it can be concluded that google sites can be used as an alternative chemistry learning media.
AKTIVITAS ANTIOKSIDAN, KADAR FENOLIK, DAN KADAR FLAVONOID TOTAL DAUN JATI CINA (Senna alexandrina) Khoirul Ngibad
Lantanida Journal Vol 11, No 1 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i1.17426

Abstract

Free radicals are unstable molecules or chemical fragments with one or more unpaired electrons that can cause organ damage, resulting in chronic and degenerative disorders. Antioxidant substances can reduce the effects of free radicals. Chinese teak (Senna alexandrina) leaves, which include flavonoids and phenols, are one source of natural antioxidants. The purpose of this study is to extract Chinese teak leaf powder with ethanol and measure the levels of flavonoids and total phenolics. Furthermore, the antioxidant activity of an ethanol extract of Chinese teak leaves was investigated. After soaking Chinese teak leaf powder in ethanol, the filtrate is condensed using a rotary evaporator. Total phenolic and flavonoid levels are measured using UV-Vis spectrophotometry. The diphenyl-1-picrylhydrazyl (DPPH) technique is used to determine antioxidant activity. The yield of the ethanol extract of Chinese teak leaves was 3.3%, with flavonoids and total phenolics values of 7.94 mg QE/g and 7.9 mg GAE/g, respectively. Each test solution demonstrated antioxidant activity of 20, 40, 80, and 100 mg/L, with the greatest activity at 100 mg/L having a percent inhibition value of 83%.
TINJAUAN LITERATUR: BIOAKUMULASI LOGAM BERAT PADA IKAN DI PERAIRAN INDONESIA Said Ali Akbar; Hanis Kusumawati Rahayu
Lantanida Journal Vol 11, No 1 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i1.17834

Abstract

Heavy metals are frequently employed in a variety of industries, including industry, agriculture, food processing, and domestic appliances. Heavy metal concentrations will be extremely high in locations with residential, mining, and manufacturing activity. The concentration of heavy metals in fish reflects the state of heavy metal pollution in the ecosystem. Heavy metal accumulation in aquatic creatures' organs can occasionally exceed the level of heavy metals in their environment. The purpose of this literature review is to give information on the bioaccumulation of heavy metals in fish in Indonesian seas. 38 fish species were recorded, and literacy parameters in the form of sample locations and levels, units and types of heavy metals discovered were summarized. Pb > Cd > Hg > Cu > As > Zn > Cr > Mn > Fe is the order of metal abundance discovered. It is advised that heavy metal contamination studies be carried out in the future as part of the government's strategy for tracking down this problem.
PENETAPAN KADAR FLAVONOID TOTAL DAN AKTIVITAS ANTIOKSIDAN EKSTRAK AKAR NIPAH (Nypa fruticans Wurmb) DENGAN METODE SPEKTROFOTOMETRI UV-Vis Devi Oktaria; Mauritz Pandapotan Marpaung
Lantanida Journal Vol 11, No 1 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i1.16087

Abstract

Akar nipah (Nypa fruticans Wurmb) contains active chemicals in the form of flavonoids and is a component of the nipah plant with antioxidant activity. The study's goal was to determine the total flavonoid content as well as the antioxidant activity of akar nipah extract. The extraction method is a maceration method with methanol as the solvent. Total flavonoid levels in akar nipah extract were determined using UV-Vis spectrophotometry after the addition of 10% AlCl3 at a wavelength of 433 nm, while antioxidant activity was determined using the DPPH (2,2-diphenyl-1-picrylhydrazyl) technique at a wavelength of 516 nm. The total flavonoid levels and antioxidant activity were determined in comparison to quercetin. According to the study's findings, akar nipah extract contains flavonoids at 0.05 0.01% and has very strong antioxidant activity (IC50 of 6.59 ppm).

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