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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Sains Teknologi dan Lingkungan (JSTL) Tekinfo | Scientific Journal of Industrial and Information Engineering Indonesian Journal of Chemistry Jurnal Biomedika Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Jurnal Pengabdian kepada Masyarakat Journal Of Human And Education (JAHE) Makara Journal of Science Jurnal Kimia dan Rekayasa Molekul: Jurnal Ilmiah Kimia

Yari Mukti Wibowo

Program Studi Analis Kimia, Fakultas Teknik, Universitas Setia Budi, Surakarta

Author-ID : 950486

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Penentuan Kadar Logam Timbal (Pb) pada Ikan Bandeng di Sekitar Pelabuhan Tanjung Mas Feni Nilasari; Yari Mukti Wibowo
Biomedika Vol 11 No 2 (2018): Jurnal Biomedika
Publisher : Fakultas Ilmu Kesehatan Universitas Setia Budi Surakarta

Ikan bandeng merupakan ikan yang sangat populer di kalangan masyarakat umum karena harganya yang terjangkau dan kandungan gizi yang tinggi untuk pertumbuhan manusia. Tambak ikan bandeng yang berada pada sekitar kawasan industri yang dekat dengan Pelabuhan Tanjung Mas dicurigai bisa tercemar oleh logam berat seperti Timbal (Pb), yang dapat mengakibatkan dampak buruk bagi manusia apabila terakumulasi di dalam tubuh. Metode analisis yang digunakan adalah Spektrofotometri Serapan Atom (SSA). SSA merupakan metode yang populer untuk analisis logam, karena di samping relatif sederhana, metode ini juga selektif dan sangat sensitif. Destruksi yang dilakukan pada sampel adalah destruksi kering dengan pemanasan pada suhu 5500C. Sampel yang telah didestruksi lalu diukur menggunakan alat spektrofotometer serapan atom dengan menggunakan panjang gelombang 217 nm untuk Pb. Absorbansi yang diperoleh kemudian dihitung menggunakan persamaan regresi linier yang didapatkan dari kurva baku untuk menentukan kadar logam Pb. Konsentrasi logam Pb dalam sampel ikan bandeng yang diambil dari tambak di sekitar Pelabuhan Tanjung Mas berada di bawah baku mutu yang ditetapkan oleh SNI No 7387 : 2009. Semakin jauh tempat pengambilan sampel dari kawasan industri, semakin kecil konsentrasi logam Pb yang ditemukan pada sampel ikan bandeng. Kata kunci: bandeng, Pelabuhan Tanjung Mas, timbal, destruksi kering, spektrofotometri serapan atom

Analisis Kandungan Formalin, Boraks, dan Protein dalam Mie Basah Elisabet Nani; Yari Mukti Wibowo
Biomedika Vol 12 No 1 (2019): Jurnal Biomedika
Publisher : Fakultas Ilmu Kesehatan Universitas Setia Budi Surakarta

Wet noodles are flour-based foods and are widely consumed by the community because the processing is relatively easy. So that wet noodles are more durable and more chewy, sometimes wet noodles are added with formalin and borax. Therefore this study will analyze the formalin and borax content in wet noodles. According to SNI 2987: 2015 there should be no formalin and borax preservatives in wet noodles, and the minimum level of protein is 9.5%. Determination of qualitative analysis of formaldehyde using color testing while qualitative analysis of borax uses a flame test. Determination of protein content in wet noodle samples using the Kjeldahl method. Based on the results of research on 3 samples of wet noodles sold at Pasar Gedhe, Surakarta City and its surroundings, negative or no formaldehyde and borax results were obtained, so they meet the quality requirements of wet noodles based on SNI 2987 : 2015. The average protein content in wet noodles is very small in sample A of 0.31%, sample B is 1, 22% and sample C is 2.61%, so they do not meet the quality requirements of wet noodles based on SNI 2987 : 2015.

Determination of Cadmium (Cd) Metal Content in Milkfish at Port of Tanjung Mas Feni Nilasari; Yari Mukti Wibowo
Biomedika Vol 13 No 1 (2020): Jurnal Biomedika
Publisher : Fakultas Ilmu Kesehatan Universitas Setia Budi Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31001/biomedika.v13i1.687

The location of milkfish ponds around the Port of Tanjung Mas is adjacent to an industrial area. This can increase the possibilities of milkfish being contaminated by heavy metals, for example Cadmium (Cd) metal. Therefore it is necessary to determine the levels of Cadmium metal in milkfish that are cultivated in ponds around the Port of Tanjung Mas. The aims of this study is to find out the levels of Cadmium metal in milkfish samples at the Port of Tanjung Mas whether or nor it exceeds the threshold. The method commonly used for metal analysis is the Atomic Absorption Spectrophotometry (AAS) method, because this method is simple, selective and sensitive for analyzing metal content in a sample of animal origin, such as milkfish. In the initial treatment, milkfish samples were separated between meat and bones. The milkfish was then dried by heating at 150oC for 1 hour and continuing with ashes up to 550oC. The ash-shaped sample was dissolved in concentrated HNO3 and diluted with aquabidest. The aqueous sample solution was analyzed using ASS at a wavelength of 228 nm to determine the metal content of Cd in the sample. The level of Cd metal in milkfish samples analyzed using ASS, showed that it was still in accordance with the quality standard, which was below the threshold set in SNI No. 7387: 2009. Samples of milkfish taken from several pond locations showed that the farther pond was from the industrial area, the less Cd metal pollution in milkfish in the pond area.

Perancangan Alat Pemotong Tahu dan Rekayasa Pemanfaatan Limbah Cair untuk Meningkatkan Produktivitas Industri Tahu Yari Mukti Wibowo; Rosleini Ria Putri Zendrato; Bagus Ismail Adhi Wicaksana
Tekinfo: Jurnal Ilmiah Teknik Industri dan Informasi Vol 5 No 1 (2016)
Publisher : Program Studi Teknik Industri Universitas Setia Budi

Banyak industri tahu yang membuang limbah cair langsung ke dalam selokan atau sungai sehingga menambah tingkat pencemaran air. Untuk mengurangi permasalahan tersebut, maka perlunya pemanfaatan limbah cair tersebut, salah satunya dalam proses penggumpalan tahu. Selain itu, masih banyak industri tahu yang menggunakan pisau dan penggaris untuk memotong tahu. Untuk meningkatkan efisiensi waktu pemotongan, maka dapat digunakan alat pemotong tahu. Pemanfaatan limbah cair dan alat pemotong tahu tersebut dapat meningkatkan efisiensi biaya dan waktu dalam proses produksi tahu yang akhirnya dapat meningkatkan produktivitas industri tahu tersebut. Kata kunci : limbah cair, alat pemotong tahu, efisiensi, industri tahu

PENENTUAN WAKTU PROSES DAN TEGANGAN OPTIMUM DEGRADASI ZAT WARNA TEKSTIL MENGGUNAKAN METODE ELEKTROKIMIA MULTI ELEKTRODA DENGAN SISTEM KONTINYU Suseno Suseno; Ig. Yari Mukti Wibowo
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2017): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 8 2017
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.358 KB)

Telah dilakukan penelitian degradasi campuran zat warna tekstil menggunakan metode elektrokimia multi elektroda dengan sistem kontinyu. Metode ini merupakan kombinasi metode elektrooksidasi menggunakan elektroda grafit dengan metode elektrokoagulasi menggunakan elektroda besi. Tujuan penelitian ini adalah menentukan kondisi optimum waktu proses dan tegangan ditinjau dari persentase penurunan absorbansi / intensitas warna air limbah. Percobaan yang telah dilakukan adalah melakukan proses elektrooksidasi yang dilanjutkan proses elektrokoagulasi terhadap air limbah artificial dengan variasi waktu proses dan tegangan. Parameter kualitas air limbah yang telah dianalisis adalah absorbansi / intensitas warna air limbah sebelum dan sesudah pengolahan, kemudian dihitung persentase penurunan absorbansinya. Hasil penelitian menunjukkan bahwa kondisi optimum waktu proses dan tegangan pada degradasi zat warna tekstil menggunakan metode elektrokimia multi elektroda sistem kontinyu adalah 20 menit dan 12 volt.Kata Kunci : Absorbansi, Air Limbah, Elektrokoagulasi, Elektrooksidasi, Kontinyu

Design of New Potent Insecticides of Organophosphate Derivatives Based on QSAR Analysis Mudasir Mudasir; Yari Mukti Wibowo; Harno Dwi Pranowo
Indonesian Journal of Chemistry Vol 13, No 1 (2013)
Publisher : Universitas Gadjah Mada

Design of new potent insecticide compounds of organophosphate derivatives based on QSAR (Quantitative Structure-Activity Relationship) analytical model has been conducted. Organophosphate derivative compounds and their activities were obtained from the literature. Computational modeling of the structure of organophosphate derivative compounds and calculation of their QSAR descriptors have been done by AM1 (Austin Model 1) method. The best QSAR model was selected from the QSAR models that used only electronic descriptors and from those using both electronic and molecular descriptors. The best QSAR model obtained was:Log LD50 = 50.872 - 66.457 qC1 - 65.735 qC6 + 83.115 qO7 (n = 30, r = 0.876, adjusted r2 = 0.741, Fcal/Ftab = 9.636, PRESS = 2.414 x 10-6)The best QSAR model was then used to design in silico new compounds of insecticide of organophosphate derivatives with better activity as compared to the existing synthesized organophosphate derivatives. So far, the most potent insecticide of organophosphate compound that has been successfully synthesized had log LD50 of -5.20, while the new designed compound based on the best QSAR model, i.e.: 4-(diethoxy phosphoryloxy) benzene sulfonic acid, had log LD50 prediction of -7.29. Therefore, the new designed insecticide compound is suggested to be synthesized and tested for its activity in laboratory for further verification.

Pelatihan Pembuatan Sabun Cuci Tangan Penunjang PHBS bagi Kader PKK Wilayah Kadipiro Banjarsari Surakarta Reslely Harjanti; Vivin Nopiyanti; Siti Aisiyah; Yari Mukti Wibowo; Gregorius Prima Indra Budianto
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 1 No. 9: Februari 2022
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jabdi.v1i9.1281

Tidak semua anggota masyarakat paham pentingnya Perilaku Hidup Bersih dan Sehat (PHBS) contohnya cuci tangan sebagai salah satu upaya dalam pencegahan penularan virus corona. Kegiatan pengabdian masyarakat ini bertujuan untuk mendukung program pemerintah dalam pencegahan penularan/ penyebaran virus corona dengan memberikan edukasi serta diseminasi pembuatan sabun cuci tangan kepada kader PKK di lingkungan Sukomulyo Kadipiro Banjarsari Surakarta. Kegiatan pengabdian dimulai dari perijinan kepada ketua RT dan Lurah Kadipiro. Selanjutnya dilakukan pretest untuk mengetahui tingkat pengetahuan peserta terkait PHBS serta pembuatan sabun cuci tangan. Selanjutnya dilakukan pelatihan pembuatan sabun cuci tangan. Tahapan akhir adalah evaluasi postest melalui kuesioner yang dibagikan kepada peserta dan hasilnya dibandingkan dengan hasil pretest dan diuji statistik. Hasil kegiatan berupa produk sabun cuci tangan dikemas dalam wadah yang menarik dapat dikembangkan untuk usaha mandiri warga. Hasil uji statistik menunjukkan bahwa peserta pelatihan memahami proses pembuatan sabun cuci tangan ditandai ada perbedaan signifikan (alfa<0.05) pada uji statistik.

Quantitative Structure-Activity Relationship Analysis of Organophosphate Insecticides Using Electronic and Molecular Parameters Wibowo, Yari Mukti; Mudasir,; Pranowo, Harno Dwi
Makara Journal of Science Vol. 21, No. 3
Publisher : UI Scholars Hub

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

Quantitative Structure-Activity Relationship (QSAR) analysis of organophosphate derivatives, and their insecticide activities, was performed using electronic and molecular parameters. The series of organophosphate derivatives and their activities were obtained from literature. The semi-empirical AM1 method was used to model the structure of organophosphate derivatives and calculate the parameters of QSAR. Multiple linear regression (MLR) analysis was performed on the electronic and molecular parameters as well as the activities of the organophosphate insecticides to derive the QSAR model. The best QSAR equation model was used to design, in silico, new insecticide molecules of organophosphate derivatives with higher insecticidal activity. A new insecticide molecule, 4-(diethoxy phosphoryloxy) benzene sulfonic acid, -Log LD50 = 7.344, had the highest insecticidal activity. Lastly, we recommend synthesizing and testing the new insecticide molecule further in the laboratory.

Determination of Lead Metal Levels in Fresh Cow Milk Samples Using Atomic Absorption Spectrophotometry: Penentuan Kadar Logam Timbal pada Sampel Susu Sapi Segar menggunakan Spektrofotometri Serapan Atom Depita Fajar Rohmawati; Yari Mukti Wibowo
Jurnal Kimia dan Rekayasa Vol. 1 No. 2 (2021): Jurnal Kimia dan Rekayasa Edisi Januari 2021
Publisher : Program Studi S1 Teknik Kimia, Fakultas Teknik, Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31001/jkireka.v1i2.13

Fresh milk is a liquid produced by healthy and clean animals, such as cows. The natural content of fresh milk is not reduced or added by other compounds and is only treated with a cooling process without affecting its purity. Fresh milk can be contaminated with lead metal (Pb), because animal feed or water has been contaminated with Pb. If we consume fresh cow's milk in the long term, it can interfere with health. According to SNI 3141.1: 2011, the maximum Pb level allowed in fresh cow's milk is 0.02 µg / mL. It is necessary to test fresh cow's milk, one of which is to determine the Pb level, so that the fresh cow's milk is suitable for consumption. Pb levels were determined by Atomic Absorption Spectrophotometer (AAS) based on SNI 01-2896-1998. The Pb content in the fresh cow's milk sample was determined by wet digestion and then analyzed by AAS at 283.3 nm lamda. The results showed that the Pb levels were 0.0570 µg / mL (sample A), 0.1230 µg / mL (sample B) and 0.0380 µg / mL (sample C). From these results it can be seen that the Pb content in the fresh cow milk sample does not meet the requirements based on SNI 3141.1: 2011. Keyword : Atomic Absorption Spectrophotometry, fresh cow's milk ,lead metal. AbstrakSusu segar adalah suatu cairan yang dihasilkan oleh hewan yang sehat dan bersih, misalnya sapi. Kandungan alami dari susu segar tersebut tidak dikurangi atau ditambah senyawa lain dan hanya mendapat perlakuan proses pendinginan tanpa mempengaruhi kemurniannya. Susu segar dapat tercemar logam timbal (Pb), karena pakan ternak atau airnya yang sudah tercemar Pb. Bila kita mengkonsumsi susu sapi segar dalam jangka panjang, dapat mengganggu kesehatan. Menurut SNI 3141.1:2011, kadar Pb maksimum yang diperbolehkan dalam susu sapi segar sebesar 0,02 µg/mL. Perlunya dilakukan pengujian terhadap susu sapi segar, salah satunya adalah penentuan kadar Pb, agar susu sapi segar tersebut layak untuk dikonsumsi. Kadar Pb ditentukan dengan Spektrofotometer Serapan Atom (SSA) berdasarkan SNI 01-2896-1998. Kadar Pb pada sampel susu sapi segar ditentukan dengan destruksi basah kemudian dianalisis dengan SSA pada lamda 283,3 nm. Hasil penelitian menunjukkan bahwa kadar Pb sebesar 0,0570 µg/mL (sampel A), 0,1230 µg/mL (sampel B) dan 0,0380 µg/mL (sampel C). Dari hasil tersebut dapat diketahui bahwa kadar Pb pada sampel susu sapi segar tidak memenuhi syarat berdasarkan SNI 3141.1:2011.

Analysis of Iron (Fe) Levels in Pump Well Water at Mojotegalan Village Using an Atomic Absorption Spectrophotometer: Analisis Kadar Logam Besi (Fe) pada Air Sumur Pompa di Desa Mojotegalan Menggunakan Spektrofotometer Serapan Atom Ermawati Nurmushoimah Maghfiroh; Yari Mukti Wibowo
Jurnal Kimia dan Rekayasa Vol. 2 No. 1 (2021): Jurnal Kimia dan Rekayasa Edisi Juli 2021
Publisher : Program Studi S1 Teknik Kimia, Fakultas Teknik, Universitas Setia Budi

Pump wells are wells made by drilling deep ground water layers so that they are slightly affected by contamination. There are times when the well pump can contain substances that should not be like containing residual pollutant particles or metal minerals, one of which is metal iron (Fe) which can cause the well water to turn yellow-brown after some time of contact with air, causing an unpleasant odor , and cause health problems if consumed continuously. Determination of iron metal content (Fe) in 3 pump well water samples taken in Mojotegalan village RT 002 RW 001,, Joho, Sukoharjo was done by filtering the sample using a 0.45 µm porous membrane filter and preserved with concentrated HNO3 to pH <2. The resulting filtrate was analyzed using the Atomic Absorption Spectrophotometry method at a wavelength of 248.3 nm. The results of the analysis of pump well water samples in the village of Mojotegalan RT 002 RW 001, Joho, Sukoharjo obtained an average level of iron (Fe) of 0.2548 mg / L. These results meet the drinking water quality requirements according to the RI Minister of Health Regulation No. 492 / MENKES / PER / IV / 2010 which is smaller than 0.3 mg/L. AbstrakSumur pompa merupakan sumur yang dibuat dengan cara pengeboran lapisan air tanah dalam sehingga sedikit dipengaruhi oleh kontaminasi. Ada kalanya sumur pompa bisa mengandung zat-zat yang tidak seharusnya seperti mengandung sisa partikel pencemar ataupun mineral logam, salah satunya adalah logam besi (Fe) yang dapat menyebabkan air sumur berwarna kuning-coklat setelah beberapa saat kontak dengan udara, menimbulkan bau yang kurang enak, dan menimbulkan masalah gangguan kesehatan apabila dikonsumsi terus-menerus. Penentuan kadar logam besi (Fe) pada 3 sampel air sumur pompa yang diambil di Desa Mojotegalan RT 002 RW 001, Joho, Sukoharjo dilakukan dengan menyaring sampel menggunakan saringan membran berpori 0,45 µm dan diawetkan dengan HNO3 pekat sampai pH<2. Filtrat yang dihasilkan dianalisis menggunakan metode Spektrofotometri Serapan Atom pada panjang gelombang 248,3 nm. Hasil analisis pada sampel air sumur pompa di Desa Mojotegalan RT 002 RW 001, Joho, Sukoharjo didapatkan kadar rata-rata besi (Fe) adalah sebesar 0,2548 mg/L. Hasil ini memenuhi syarat mutu air minum menurut PERMENKES RI No. 492/MENKES/PER/IV/2010 yakni lebih kecil dari 0,3 mg/L

Co-Authors Anggi Mukromin Anita Indrasari Bagus Ismail Adhi Wicaksana Darmawan, Petrus Depita Fajar Rohmawati Dewi Astuti Herawati Dian Kresnadipayana Elisabet Nani Ermawati Nurmushoimah Maghfiroh Feni Nilasari Gregorius Prima Indra Budianto, Gregorius Prima Indra Hariyanti, Widi Harno Dwi Pranowo Harno Dwi Pranowo Harno Dwi Pranowo Ida Lestari Mahayana, Argoto Mudasir Mudasir Mudasir Mudasir Mudasir, Muftiyanto, R. Taufiq Nur Narimo Narimo Peni Pujiastuti Peni Pujiastuti Peni Pujiastuti Rahmadina, Nadia Reslely Harjanti Rosleini Ria Putri Zendrato Setyawan, Didik Siddiq, Faiz Rahman Siti Aisiyah Suseno Suseno Suseno Suseno Vivin Nopiyanti

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