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All Journal VALENSI Jurnal Penelitian Saintek Jurnal Natur Indonesia Alchemy : Journal of Chemistry Jurnal Ilmu Kimia Universitas Brawijaya Natural B The Journal of Pure and Applied Chemistry Research SEMIRATA 2015 Jurnal Fisika FLUX ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Otomasi Kontrol dan Instrumentasi Chemistry Indonesian Journal of Chemical Research Indonesian Journal of Chemical Analysis (IJCA) Molekul: Jurnal Ilmiah Kimia Jurnal Jejaring Matematika dan Sains Bubungan Tinggi: Jurnal Pengabdian Masyarakat Rengganis Jurnal Pengabdian Masyarakat Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Makara Journal of Science
Ani Mulyasuryani
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Aplikasi MIP Poli Vinil Alkohol (PVA)-Fe3O4 dalam Pengembangan Sensor Diazinon dan Monosodium Glutamat Ramadani, Dhody Pazar; Prasetya, Desta Enggar Dwi; Krisnaniningrum, Elvian Eka; Mulyasuryani, Ani
Jurnal Jejaring Matematika dan Sains Vol. 1 No. 1 (2019): Edisi Juni 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.v1i1.130

Abstract

Molecularly Imprinted Polymer (MIP) dari poli vinil alkohol (PVA)-Fe3O4 telah dikembangkan sebagai reseptor pada sensor kimia untuk diazinon dan monosodium glutamat (MSG). MIP dibuat dari PVA menggunakan glutaraldehid sebagai crosslinker dan asam sitrat sebagai katalis. Reseptor adalah suatu template yang disesuaikan dengan sensornya; template diazinon untuk sensor diazinon dan template MSG untuk sensor MSG. Reseptor MIP PVA-Fe3O4 dilapiskan pada permukaan elektroda karbon tipe screen printed (SPE). Pada penelitian ini, telah dipelajari pengaruh asam sitrat dan glutaraldehid terhadap pembentukan MIP. Dipelajari juga pengaruh kadar diazinon dan MSG terhadap kinerja masing-masing sensor. Kadar diazinon dalam reseptor yang dipelajari adalah 0,01; 0,02; dan 0,03%, sedangkan kadar MSG adalah 0,5; 0,9; dan 4,5%. Berdasarkan spektrum FTIR, hasil penelitian menunjukkan bahwa pada MIP PVA-glutaraldehid terdapat gugus fungsi C-O yang menunjukkan adanya ikatan silang antara PVA dan glutaraldehid; sedangkan pada MIP PVA-asam sitrat tidak menunjukkan adanya gugus fungsi tersebut. Kinerja sensor diazinon dan MSG dipengaruhi oleh kadar/jumlah template dalam reseptor. Kinerja optimum sensor dihasilkan pada membran reseptor masing-masing adalah diazinon 0,02 %, dan MSG 0,5 %. Kepekaan sensor diazinon adalah 33,8 mV/dekade pada pH 2, dalam buffer fosfat-KCl, rentang konsentrasi 10-5-10-12 M, dan waktu respon 150 detik. Kepekaan sensor MSG adalah 33,25 mV/dekade pada kisaran konsentrasi 10-5-10-1 M, dalam pH 5 dan waktu respon 180 detik.
Pengaruh Elektrolit Terhadap Sinyal Pada Sensor Pestisida Mustaghfiroh, Afifah Muhimmatul; Ramadani, Dhody Pazar; Mulyasuryani, Ani
Jurnal Jejaring Matematika dan Sains Vol. 1 No. 1 (2019): Edisi Juni 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.v1i1.131

Abstract

Telah diteliti pengaruh elektrolit terhadap sinyal sensor pestisida menggunakan sensor diazinon dan sensor klorpirifos. Sensor menggunakan reseptor molecularly imprinted polymer (MIP) poli vinil alkohol (PVA)-Fe3O4. Komposisi reseptor MIP PVA-Fe3O4 untuk sensor diazinon adalah PVA 70,19 %; Fe3O4 1,72 %; glutaraldehid 12,48 %; asam sitrat 15,59 % dan diazinon 0,02 %. Komposisi reseptor MIP PVA-Fe3O4 untuk sensor klorpirifos adalah PVA 82,8 %; Fe3O4 0,5%; glutaraldehid 7,4 %; asam sitrat 9,2 % dan klorpirifos 0,1 %. Reseptor dilapiskan pada permukaan screen printed carbon electrode (SPCE). Besaran sinyal yang terbaca adalah potensial listrik dimana pembacaannya dibandingkan terhadap Ag/AgCl. Pengukuran diazinon dilakukan pada pH 2 dan pH 6 untuk klorpirifos, keduanya dalam HCl, buffer fosfat dan buffer fosfat-KCl. Hasil penelitian menunjukkan bahwa jenis elektrolit berpengaruh terhadap penurunan sinyal. Penurunan sinyal menyebabkan peningkatan kepekaan sensor. Kepekaan dari sensor diazinon adalah 33,8 mV/dekade pada pH 2, dalam buffer fosfat-KCl, rentang konsentrasi 10-5-10-12 M, dan waktu respon 150 detik. Kepekaan sensor klorpirifos adalah 24 mV/dekade pada pH 6, dalam buffer fosfat, rentang konsentrasi 10-6-10-13 M, dan waktu respon 150 detik.
Construction and Characterization of Conductometric Biosensor for Determination of the Diazinon Concentration Prayoga, Indrajid; Mulyasuryani, Ani; Prasetyawan, Sasangka
Makara Journal of Science Vol. 8, No. 1
Publisher : UI Scholars Hub

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

Abstract

Excessive diazinon residue in vegetables can endanger human health. Therefore, a simple, fast, and accurate method is needed to detect residue. A conductometric biosensor is a good choice because it also offers high selectivity and sensitivity. The principle of detection of the conductometric biosensor is based on enzymatic hydrolysis of diazinon into O,O diethyl phosphorothiate,2-isopropyl-6-methylpyrimidin-4-ol, and H+ catalyzed by organophosphate hydrolase (OPH). The optimum amount of organophosphate hydrolase added to the screen-printed carbon electrode (SPCE) modified with BSA-glutaraldehyde is 118.5 µg, while the optimum pH is 8.5. This biosensor has a response time of 30 sec, a linear dynamic range of 0 to 1 ppm, sensitivity of 42.21 µS/ppm, and limit of detection of 0.19 ppm.
Construction and Characterization of Conductometric Biosensor for Determination of the Diazinon Concentration Prayoga, Indrajid; Mulyasuryani, Ani; Prasetyawan, Sasangka
Makara Journal of Science Vol. 18, No. 1
Publisher : UI Scholars Hub

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

Abstract

Excessive diazinon residue in vegetables can endanger human health. Therefore, a simple, fast, and accurate method is needed to detect residue. A conductometric biosensor is a good choice because it also offers high selectivity and sensitivity. The principle of detection of the conductometric biosensor is based on enzymatic hydrolysis of diazinon into O,O diethyl phosphorothiate,2-isopropyl-6-methylpyrimidin-4-ol, and H+ catalyzed by organophosphate hydrolase (OPH). The optimum amount of organophosphate hydrolase added to the screen-printed carbon electrode (SPCE) modified with BSA-glutaraldehyde is 118.5 µg, while the optimum pH is 8.5. This biosensor has a response time of 30 sec, a linear dynamic range of 0 to 1 ppm, sensitivity of 42.21 µS/ppm, and limit of detection of 0.19 ppm.
Variation of Iodine Mass and Acetylation Time On Cellulose Acetate Synthesis From Rice Straw Umaningrum, Dewi; Astuti, Maria Dewi; Nurmasari, Radna; Hasanuddin, Hasanuddin; Mulyasuryani, Ani; Mardiana, Diah
Indonesian Journal of Chemical Research Vol 8 No 3 (2021): Edition for January 2021
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2021.8-dew

Abstract

Cellulose acetate is a membrane material that can be used in the sensor field. One source of cellulose acetate is from rice straw. This study aimed to study the effect of iodine mass and acetylation time on cellulose acetate synthesis from rice straw. The initial step is to isolate cellulose from rice straw, followed by cellulose acetate synthesis using iodine catalyst by varying the amount of iodine as much as 0.1-0.3 grams and acetylation time for 1 until 5 hours. The cellulose acetate was characterized using an infrared spectrophotometer, and its viscosity was determined. The result shows that the cellulose 33.63%. The maximum time of cellulose acetate acetylation is 2 hours with a mass of iodine 0.2 g. The yield of cellulose acetate was 14.98%, with an acetyl value of 19.11% and a degree of substitution of 0.89. The cellulose acetate produced has a low viscosity. The FTIR characterization of cellulose acetate shows O-H functional groups at 3333 cm-1, C-H functional groups at ​​2897 cm-1, carbonyl functional groups at 1722 cm-1 C-O functional groups at 1029 cm-1 that were identical in cellulose acetate compounds. The amount of iodine and the acetylation time affected the cellulose acetate product.
Extraction of Copper(I) Thiosulfate by Modified Chitosan Anggraito, Okky; Sabarudin, Akhmad; Mulyasuryani, Ani
The Journal of Pure and Applied Chemistry Research Vol. 3 No. 2 (2014)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (617.304 KB) | DOI: 10.21776/ub.jpacr.%y.03.02.168

Abstract

Chitosan is one of non-toxic natural biopolymer and abundance in nature. Chitosan have two active sites such as amine and hydroxyl groups. Amine groups (-NH2) in chitosan can be modified into secondary amine (-NHR). In this research, copper was dissolved as copper(I) thiosulfate as anion complex (Cu(S2O3)23-) and chitosan was modified by trimethylamine sulfur trioxide (TMAS). One of hydrogen atom in –NH2 was substituted by –SO3Na. The result of this research, the modified chitosan was identified by FT-IR. FT-IR spectra gave characteristic band at 3600-3200 cm-1 (O-H and N-H); 1648 cm-1 (C=O); 1115,74 cm-1 (S=O) and 617,18 cm-1 (N-S). The result of surface analysis using SEM and TEM showed that the surface morphology of sulfated chitosan as a result of modification is different in comparison with chitosan. Based on chitosan, pH extraction was adjusted to pH 3 until 8. After optimum pH of extraction was obtained then re-extraction was done by using thiosulfate solution at 0.05 ; 0.10 ; 0.50 ; and 1.00 M. Extraction and re-extraction of copper(I) thiosulfate was analyzed by Atomic Absorption Spectrophotometer (AAS). The highest efficiency extraction using modified chitosan and chitosan respectively at pH 3 and 6. The efficiency re-extraction using modified chitosan and chitosan respectively 100% and below 100%.
Synthesis of Chitosan Magnetic Nanoparticles using Glutaraldehyde and Tripolyphosphate as Crosslinker Rahmani, Indri Alidha; Mulyasuryani, Ani; Andayani, Ulfa
The Journal of Pure and Applied Chemistry Research Vol. 11 No. 2 (2022): Edition May-August 2022
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.%y.011.02.683

Abstract

Chitosan is an abundant natural polymer, which able to adsorb Pb2+. However, chitosan has the drawback of being unstable in acid and alkaline conditions, so it needs cross-linking. In this article, we will compare the usage of two crosslinkers, glutaraldehyde (GD) and tripolyphosphate (TPP), to solve these issues. The synthesis of chitosan magnetic nanoparticles was carried out by co-precipitation with the addition of glutaraldehyde under acidic conditions and the addition of TPP under alkaline conditions. The results showed that the FTIR spectrum gave characteristic bands at 3131.96 cm-1 (OH and NH), 1635.86 cm-1 (C=O), 1401.97 cm-1 (CN), ~1110 cm-1 (COC), and ~617 cm-1 (Fe-O). SEM analysis showed that the surface morphology of CMNP-GD particle aggregation was clear more than that of CMNP-TPP. The size of the synthesized nanoparticles was determined by PSA analysis, which was 131.95 µm and 137.10 µm, respectively. The results of the XRD analysis showed that, in addition to the Fe3O4 and chitosan phases, the produced CMNP also contained γ-Fe2O3 phase, which was considered to be caused by Fe3O4 oxidation. Keywords: nanoparticle, chitosan, magnetic, glutaraldehyde, tripolyphosphate
Modification of Screen-Printed Carbon Electrode (SPCE) by Magnetic Fe3O4-Chitosan for Detection of Hexavalent Chromium Mulyasuryani, Ani; Ponco Prananto, Yuniar
Indonesian Journal of Chemical Analysis (IJCA) Vol. 8 No. 1 (2025): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol8.iss1.art8

Abstract

A new modification of screen-printed carbon electrode (SPCE) with magnetic Fe3O4-chitosan has been developed. Magnetic Fe3O4-chitosan was made from a mixture of Fe2+/Fe3+ (1:2) with 1% chitosan. Sodium tripolyphosphate was used as a crosslinking reagent for chitosan under alkaline conditions using NH3. SPCE modification with Fe3O4 can increase the sensitivity of Cr(VI) detection by differential pulse voltammetry (DPV). This method resulted in a sensitivity of 21.9 ppm/μA in the 0.1 - 1 ppm Cr(VI) concentration range in a 0.005 M KCl-HCl electrolyte mixture. The detection limit (LoD) is 0.2 ppm with an average accuracy of 94%.
Penyaring Air Keran untuk Pemenuhan Air Bersih di Desa Talangsuko, Kecamatan Turen, Kabupaten Malang Layta Dinira; Mulyasuryani, Ani; Rumhayati, Barlah; Sabarudin, Akhmad
Rengganis Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2025): November 2025
Publisher : Pendidikan Matematika, FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/rengganis.v5i2.877

Abstract

Desa Talangsuko, Kecamatan Turen, Kabupaten Malang is classified as an area with moderate risk of perilaku hidup bersih dan sehat (PHBS), indicating that PHBS management is not yet optimal. This community service aimed to improve household water management in Desa Talangsuko by implementing filtration and adsorption technology through tap water filters. The activities included water sampling, tap water filter design, education on clean water through counseling and hands-on demonstrations, and installation of tap water filters. The results showed an improvement in household water quality after the use of the tap water filters, as indicated by the reduction of chemical contaminants such as fluoride, nitrate, and water hardness. The counseling and hands-on demonstrations increased community awareness about clean water and the importance of regularly replacing water filter materials. These results suggest that this program demonstrated a positive impact on household water management in Desa Talangsuko.
Co-Authors - Muhiroh Adam Wiryawan Adam Wiryawan Afifah Muhimmatul Mustaghfiroh Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Alfita Safitri Alfita Savitri Anisa Resti Anna Roosdiana Arie Srihardyastutie Arumdati, Rara Aulia Asnaili Alfi Nurillah Attasith Parnsubsakul Ayu Rahayu Anggraeni Azizah, Alfi Bambang Ismuyanto Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Chandrawati Cahyani Danar Purwonugroho Dewi Umaningrum Dewi, Latifah Tribuana Diah Mardiana Diah Mardiana Diah Mardiana Dian Nur Fajariati Didik Pramana Dwi Oktavianti Eka Krisnaniningrum, Elvian Eka Novitasari Elvian Eka Krisnaniningrum Elvian Eka Krisnaniningrum Enggar Dwi Prasetya, Desta Erasti Pratiwi Erica Marista Rosida Hanandayu Widwiastuti Hasanuddin Hasanuddin Helmi Auliyah Istiqomah Hermin Sulistyarti Ika Diah Safitri Intan Frina Utamiyanti Isvani, Nuzulul Kurniawan Khairunnisa, Alda Khoirul Ngibad Krisnaniningrum, Elvian Eka Layta Dinira Layta Dinira Mardhatillah Mardhatillah Maria Dewi Astuti Moftah Ali Mokhammad W. Dahlan Muhammad Iqbal Fahmi Muhimmatul Mustaghfiroh, Afifah Mustaghfiroh, Afifah Muhimmatul Nanang Tri Widodo Nareswari, Aninda Nashiroh, Ni'matun Nongnoot Wongkaew Nuzulul Kurniawan Isvani Oki Mandalia Antasari Okky Anggraito Patsamon Rijiravanich Pazar Ramadani, Dhody Ponco Prananto, Yuniar Prasetya, Desta Enggar Dwi Prayoga, Indrajid Qonitah Fardiyah Qonitah Fardiyah Rachmat Triandi Tjahjanto Radna Nurmasari Rahmani, Indri Alidha Ramadani, Dhody Pazar Rika Endara Safitri Risti, Sandria Gita Rizki Sugiri Roosdiana, Anna Rossy Dwi Adhi Pratiwi Rumhayati, Barlah Sabarudin, Akhmad Safitri, Alfita Sasangka Prasetyawan Sasangka Prasetyawan Sendy Kurniawan Septi Fajar Raeni Setyorini, Dian Ayu Soebiantoro soebiantoro Suryantoro, Angga Sutrisno, Sutrisno Ulfa Andayani Ulfa Andayani Ulfa Andayani, Ulfa Unsania Haresmawati Yuniar Ponco Prananto ZAINUL ABIDIN Zainuri, Akhmad