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All Journal Jurnal Kependidikan: Penelitian Inovasi Pembelajaran Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Jurnal Inovasi Pendidikan Jurnal Sains Dasar Indonesian Journal of Chemistry Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Indonesian Journal of Chemistry and Environment SEMESTA: Journal of Science Education and Teaching Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia

Regina Tutik Padmaningrum

Universitas Negeri Yogyakarta

Author-ID : 338367

Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Materials Science & Nanotechnology Other

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PENGEMBANGAN LEMBAR KERJA SISWA (LKS) MATA PELAJARAN SAINS KIMIA UNTUK SMP Rohaeti, Eli; LFX, Endang Widjajanti; Padmaningrum, Regina Tutik
Jurnal Inovasi Pendidikan Vol 10, No 1 (2009)
Publisher : Jurnal Inovasi Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.454 KB)

This research was about the development of learning source in chemistry education. The aims of this research are: (1) to arrange and to develop student's working sheet on chemistry science aspect for SMP/MTs based on the education unit level curriculum (KTSP) using quality criteria and (2) to evaluate quality the student's working sheet on chemistry science aspect based on the education unit level curriculum as required by science teachers of SMP and chemistry teachers of SMA. This research included two steps: arranging and developing student's working sheet on chemistry science aspects and evaluating quality of student's working sheet. The sheet was developed based on competency standard of chemistry science aspect at grade seven and eight including (1) substance classification, (2) substance state and changes and the properties in physical and chemistry changes, (3) matter particles, (4) the usefulness of chemical material in life, and (5) addictive and psychotropical. The sheet quality was evaluated by 2 SMP science teachers and 3 SMA chemistry teachers, and then the scores were compared with ideal score. The quality criteria of the sheet were interpreted from 10 aspects. The quality of student's working sheet on chemistry science aspect for topics (1) substance classification, (2) substance state and changes and the properties in physical and chemistry changes, (3) matter particles, (4) the usefulness chemical material in life and (5) addictive and psychotropical is very good with score 98.2; 98.8; 98.4; 102.4, and 102.2 respectively or 81.8%; 82.3%; 82%, 85.3% and 85.2%.

OPTIMIZATION OF CONDITION ION Cu2+ ELECTRODEPOSITION IN ELECTROPLATING LIQUID WASTE WITH FORMALDEHYDE AS REDUCING AGENT Marwati, Siti; Padmaningrum, Regina Tutik
Jurnal Sains Dasar Vol 5, No 1 (2016): April 2016
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstract The aims of this research to determine of the optimum of formaldehyde concentration, teh optimum of electrodeposition time and the optimum pH of solution. In addition, this research also aims to determine the character Cu deposite at optimum operational. The sample in this research was used real electroplating liquid waste from Kotagede Yogyakarta.done at various formaldehyde concentration Electrodeposition was done at various formaldehyde concentration, electrodeposition time and varoius of pH. The optimum conditions could be seen the maximum efficiency. It could be obtained by measuring the final concentration of Cu2+ after electrodeposition process by Atomic absorption spectrophotometry. The character of deposit could be seen by visual and X-ray Diffraction. The result of this research showed that the optimum of formaldehyde concentration as reducing agent was 0.3 M. the optimum time was 4 hours and the optimum of pH 9. The character of deposte was contained Cu deposite and more subtle than deposite which electrodeposited without formaldehyde. Keywords: electrodeposition, formaldehyde, reducing agent

KECERDASAN EMOSIONAL DOSEN DITINJAU DARI JENIS KELAMIN Regina Tutik Padmaningrum
Jurnal Kependidikan Vol. 38, No.2 (2008)
Publisher : Universitas Negeri Yogyakarta

The aim of the study was to identify 1) the level of emotionalquotient of the lecturers of Mathematics and Natural Sciences basedon their gender at various universities in the Province ofYogyakarta, and 2) the differences in the emotional quotient amongthe lecturers. The study was ex-post facto research. As the researchvariable, emotional quotient was defined as the scores resultingfrom the EQ questionnaire to include self emotion knowing, selfemotion management, self motivation, others emotion knowing, andrelationship construction. The population of the study wasdesignated to be the lecturers of Mathematics and Natural Sciencesat various universities in Yogyakarta Province. The sample of thestudy consisted of 141 lecturers, 72 male and 69 female, taken bypurposive random sampling technique. The instrument was thequestionnaire adapted from relevant references (Ridwan Saptoto:2002). Data were analyzed qualitatively by conversion criteria. EQdifferences were computed statistically by a t-test. Results showedthat the average score of EQ levels of male and female lecturerswere 79.6% (very high criteria) and 78.2% (high criteria). Thedifference (1.4%) was not statistically significant

TESTER KIT TO TEST BORAKS IN FOOD Regina Tutik Padmaningrum; Siti Mawarti
Jurnal Penelitian Saintek Vol 18, No 1: April 2013
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Boraks digunakan sebagai pengenyal dan pengawet makanan mempunyai efek negatif terhadap kesehatan, sehingga perlu dikembangkan alat yang dapat menguji boraks dalam makanan secara sederhana, cepat, dan praktis. Penelitian ini bertujuan mengembangkan 2 tester kit berdasarkan reaksi kimia yang spesifik antara boraks dengan pereaksi tertentu, yaitu pereaksi barium klorida dan HCI-NaOH-manitol. Penelitian ini dilakukan menggunakan metode penelitian pengembangan. Model pengembangan yang digunakan adalah model prosedural. Pengembangan tester kit melalui beberapa tahap, yaitu: a) tahap perencanaan: pemilihan pereaksi yang spesifik secara teoritis (kajian teoritis), b) tahap pengorganisasian: uji coba reaksi antara larutan boraks dengan pereaksi spesifik dan penentuan komposisi stoikiometris antara pereaksi dengan boraks, c) tahap pelaksanaan: penyusunan tester kit, prosedur uji, keterangan fungsi tester, petunjuk keamanan dan cara penyimpanan. Tester kit yang dikembangkan terdiri atas a) seperangkat alat sederhana seperti botol bertutup dan pipet tetes, b) pereaksi kimia, c) prosedur uji, d) petunjuk keamanan, e) cara penyimpanan, batas deteksi, akurasi, dan f) keterangan fungsi tester kit.

THE INFLUENCE OF THE BIOMAS OF MELATI AIR (Echinodorus paleafolius) AND TERATAI (Nyphaea firecrest) ON PHOSPHATE CONTENT, BOD, COD, TSS, AND DEGREE OF MASTER LIQUID WASTE OF LAUNDRY Regina Tutik Padmaningrum; Tien Aminatun; Yuliati Yuliati
Jurnal Penelitian Saintek Vol 19, No 2: Oktober 2014
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Laundry liquid waste containing residual detergent, deodorant, fabric softener, bleach, and methylene blue active compounds degraded difficult and dangerous for the health of the environment. Almost all wastewater is discharged home laundry business through sewers or septitank untreated or diluted beforehand so that would pollute the environment. One way toreduce the chemicals present in the wastewater is to phytoremediation. The study aims to determine the effect of water jasmine and lotus biomass on the content of phosphate, the value of BOD, COD, TSS, and pH of laundry wastewater is treated. The independent variables were the type of biomass (water jasmine, lotus) and time of application of the waste. Dependent variables include phosphate levels, DO, BOD, COD, TSS, and pH. Stages of research include 1) cleaning the roots and stems of water jasmine and lotus plants, 2) the process of acclimatization, 3) the application of the plant for a month, and 4) measurement of the dependent variable. The results showed phytoremediation using water jasmine plants can reduce levels of 172.1748 ppm phosphate, lowering the value of COD is 446.890 mg/L, lower the BOD value of 38.748 mg/L, and the lower the pH by 0.18 units of laundry wastewater, value COD, BOD and lowers the pH of 0.18 units of laundry wastewater. Lotus plant can not be used as a laundry liquid waste processing plants in phytoremediation.

Pengaruh Konsentrasi Formaldehid sebagai Agen Pereduksi Terhadap Efisiensi Elektrodeposisi Ag+ dalam Limbah Cair Elektroplating Siti Marwati; Regina Tutik Padmaningrum; Susila Kristianingrum; Sunarto '
Jurnal Sains Dasar Vol 2, No 1 (2013): April 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstrak penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi formaldehid sebagai agen perduksi terhadap efisiensi elektrodeposisi ion Ag+ dalam limbah cair elektroplating dan mengetahui karakter logam Ag hasil elektrodeposisi. Proses elektrodeposisi dengan elektroda platina sebagai anoda dan katoda. Konsentrasi larutan formaldehid divariasi yaitu 0,4; 0,3; 0,2; 0,1 M dan tanpa penambahan formaldehid. Ion Ag+ yang masih tersisa dalam limbah cair elekroplating dilakukan analisis konsentrasi ion Ag+ dengan menggunakan AAS. Untuk mengetahui struktur kristal deposit dilakukan analisis dengan menggunakan XRD. Hasil penelitian ini diperoleh kesimpulan bahwa konsentrasi formaldehid sebagai agen pereduksi berpengaruh terhadap berat deposit yang dihasilkan. Konsentrasi formaldehid sebagai agen pereduksi berpengaruh terhadap efisiensi elektrdeposisi ion Ag+ dalam limbah cair elektroplating. Efisiensi elektrodeposisi ion Ag+ paling besar diperoleh pada penambahan formaldehid 0,2 M. Karakter deposit yang dihasilkan menunjukkan bahwa di dalam deposit terdapat logam Ag dan Cu yang terdeposisikan. Adanya formaldehid menyebabkan susunan atom-atom deposit Ag di setiap bidang kisi menjadi tidak teratur dan menurunkan tingkat kekristalannya. Kata kunci: formaldehid,agen pereduksi, elektrodeposisi, perak

Pemisahan Ion Logam Besi dan Mangan pada Air Sumur (Dalam) Wonoboyo Menggunakan Metode Kolom Adsorpsi Sunarto Sunarto; Suyanta Suyanta; Regina Tutik Padmaningrum; Isana Supiah YL; Karlinda Karlinda
Jurnal Sains Dasar Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v11i1.44189

Penelitian ini bertujuan untuk memisahkan ion logam besi dan mangan pada air sumur (dalam) menggunakan metode adsorpsi kolom. Berdasarkan penelitian, diketahui efektivitas metode adsorpsi kolom untuk penurunan kadar logam besi dan mangan pada air sumur, efisiensi waktu penjerapan terhadap ion logam besi dan mangan, serta kondisi air sumur sebelum dan sesudah adsorpsi. Penelitian dilakukan pada air sumur (dalam) Wonoboyo, Kecamatan Jogonalan, Kabupaten Klaten. Proses adsorpsi menggunakan kolom berisi zeolit dan karbon aktif sebagai adsorben. Pada penelitian ini efektivitas pemisahan logam besi dan mangan dari air sumur (dalam) diketahui dari nilai efisiensi penjerapannya. Analisis logam besi dan mangan dilakukan dengan Spektrofotometri Serapan Atom (AAS). Selain itu juga dilakukan uji parameter air yaitu pH dan TDS. Hasil penelitian menunjukkan bahwa semakin lama proses adsorpsi, maka efektivitas adsorben zeolit dan arang aktif dalam menurunkan kadar Fe dan Mn meningkat. Efisiensi penjerapan cukup tinggi dengan rata-rata 97,50% untuk Fe dan 98,33% untuk Mn. Air yang sebelumnya keruh menjadi jernih dengan pH dan TDS yang semakin kecil, sehingga air lebih aman dikonsumsi karena semakin jauh dari nilai ambang batas yang ditetapkan dalam SNI dan permenkes RI N0.492/MENKES/PER/IV/2010.

Sintesis dan karakterisasi senyawa SrxBa1-XSno3 (x = 0,00; 0,10; 0,25; 0,50; 0,75; 0,90 dan 1,00) dengan metode keramik M. Pranjoto Utomo; AK. Prodjosantoso '; Regina Tutik Padmaningrum
Jurnal Sains Dasar Vol 2, No 1 (2013): April 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

AbstrakPenelitian ini bertujuan untuk mempelajari sintesis dan karakterisasi senyawa SrxBa1-xSnO3 denganmetode keramik. Bahan yang digunakan dalam sintesis senyawa SrxBa1-xSnO3 (x = 0; 0,1; 0,25 0,5; 0,75,0,9 dan 1) adalah SnO2, BaCO3 dan SrCO3 yang dihitung secara stoikiometrik. Kemudian ketiga bahandigerus, dikalsinasi secara bertahap, yaitu dari temperatur 700 °C dan 800 °C selama 6 jam, 900 °C dan1100 °C selama 12 jam. Senyawa hasil sintesis kemudian dikarakterisasi menggunakan Difraktometer Sinar-X (XRD) dan Scanning Electron Microscopy (SEM). Data hasil pengukuran dengan XRD diolah denganprogram Origin 8.5 untuk analisis awal, yaitu mengetahui adanya pergeseran puncak pada pola difraksi,program Atoms 50 untuk melihat bentuk struktur dan program Rietica untuk mengetahui bidang refleksi (hkl)serta untuk menentukan parameter kisi (a,b, dan c). Hasil penelitian ini menunjukkan bahwa senyawaSrxBa1-xSnO3 (x = 0; 0,1; 0,25 0,5; 0,75, 0,9 dan 1) dapat disintesis dengan metode keramik dari prekursorsenyawa BaSnO3, SrSnO3 dan SnO2. Nilai parameter kisi dari senyawa SrxBa1-xSnO3 (x = 0; 0,1; 0,25 0,5;0,75, 0,9 dan 1) semakin menurun seiring dengan bertambahnya komposisi logam (mol) stronsium (Sr)dalam senyawa tersebut. Selain itu, senyawa SrxBa1-xSnO3 hasil sintesis memiliki struktur kubus.Kata kunci: SrxBa1-xSnO3, metode keramik, parameter kisi, struktur kubus

RECOVERY OF GOLD (Au) AND SILVER (Ag) METALS IN THE ELECTRONIC WASTE THROUGH MULTILEVEL PRECIPITATION PROCESS Siti Marwati; Regina Tutik Padmaningrum; Sunarto Sunarto
Jurnal Sains Dasar Vol 4, No 2 (2015): October 2015
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

This research aims to determine the percent recovery of gold (Au) and silver (Ag) in the electronic waste such as CD-RW and determine the purity of gold and silver metals in the electronic waste such as CD-RW that through multilevel precipitation process. The first step was the optimization of the concentration of thiourea and time dissolution of gold and silver in the sample. The concentration of thiourea and the time dissolution optimum obtained from conentration of gold and silver maximum. By The percent recovery of gold and silver are determined by comparing the concentration of gold and silver between in the solution sample and in the sample without dissolution that be analyzed by XRF. The scond step was the multilevel precipitation process and calcination. Precipitation and calcination of the filtrat was dissolution results in the optimum condition. Reagent used was a solution of hydrochloric acid and potassium carbonate. The precipitation gold and silver produced from the precipitation of dissolution again and then be analyzed by atomic absorption spectrophotometry. The purity was determined by comparing the weight of gold and silver between in the precipitate and in the solution. The results of this research showed that the percent recovery of the silver in the CD-RW through the process dissolution with thiourea 10 g/L and 4 hours soaking time were 21.09 %. The purity silver preipitate were 0.15 %. The percent recovery and the purity of gold can not be determined because the gold contained in the sample were not detected or below the limit of detection equipment. Keywords: recovery, gold, silver, electronic waste

VALIDATION OF CYCLAMATE ANALYSIS METHOD WITH SPECTROPHOTOMETRY AND TURBIDIMETRY Regina Tutik Padmaningrum; Siti Marwati
Jurnal Sains Dasar Vol 4, No 1 (2015): April 2015
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

This research aims to validate methods of analysis by spectrophotometry and turbidimetry cyclamate in the sample drink mango-flavored jelly drink by spectrophotometry with hypochlorite reagent, ultraviolet spectrophotometry (without reagent) and turbidimetry. The object of research was the validity parameters spectrophotometric method were linearity, linear range, the limit of detection, limit of quantitation, precision, and accuracy. The calibration curve of standard solution of sodium cyclamate in the spectrophotometric method with hypochlorite reagent, UV spectrophotometry (without reagent), and turbidimetry are linear. Linear range each method respectively at a concentration were (211.36-747.08); (16.000-146.434); and (1.8521-6.1717) ppm. The detection limit of each method successively were 53.6028; 0.5833; and 0.2723 ppm. Limit of quantitation each method successively were 66.9948; 1.9443; and 0.8068 ppm. Spectrophotometric analysis method cyclamate with hypochlorite reagent had good precision and accuracy. Ultra violet spectrophotometric analysis method of cyclamate have a good precision but the accuracy was not good. Turbidimetric methods analysis of cyclamate had precision and accuracy were not good.Keywords: method validation, spectrophotometry, turbidimetry, cyclamate

Co-Authors - Yuliati A.K Prodjosantoso A.K Prodjosantoso Anggie Rachmadiana Anti Kolonial Prodjosantoso Bernadus Sentot Wijanarka Chrisberta, Maria Luisella Anadya Putri Derifasay Salsabilla Dhanianto Choirudin Mabrury Eli Rohaeti Endang Widjajanti Laksono FX Fredy Kurniawan Hamida, Zahra Hema Laksita Hapsari Illyas Md. Isa Isa, Illyas Md Isana Supiah Yosephine Louise Julia, Ardhita K. Karlinda Karlinda Karlinda Karlinda Karlinda Karlinda Karlinda M. Pranjoto Utomo Marfuatun Marfuatun Marwati, Siti Marwati Metridewi Primastuti Munji Lestari Nur Taufiq Putri, Milda Rahma Qonitah Fardiyah Rahadian Zainul Rahmawati, Aprilia Resti Syara Ronita Rika Setianingrum SARAH SARAH Sinaga, Krisna Marihot Leonardus Siti Marwati Siti Mawarti Sri Sunarmiati Sri Wahyuni Sunarto ' Sunarto Sunarto Sunarto Sunarto Sunarto Sunarto Susila Kristianingrum Suyanta Suyanta Tien Aminatun Titis Catur Wigati Ulliyah Sumanjaya V. Lilik Hariyanto Wiraputri, Luthfia Yuliati Yuliati

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