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All Journal Jurnal Ilmu Dasar Jurnal Matematika & Sains Alchemy Jurnal Penelitian Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Warta AKAB
Indra Noviandri
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Energy Environmental Science Materials Science & Nanotechnology Mathematics

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Lanthanum (III) Selective Electrode Based on 1,10-Diaza-4,7, 13,16-Tetraoxacyclooctadecane-N,N’-Diacetic Acid (DACDA) as an Ionophore Susanto Imam Rahayu; Buchari Buchari; Indra Noviandri; Suyanta Suyanta
Jurnal Matematika & Sains Vol 11, No 1 (2006)
Publisher : Institut Teknologi Bandung

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Abstract

A lanthanum(III) ion selective electrode based on ionophore 1,10-diaza-4,7,13,16-tetraoxacyclooctadecane-N,N-diacetic acid was studied. The electrode was prepared with an inner solution system in a membrane composition that contained an active ionophore 1,10-diaza-4,7-13,16-tetraoxacycloocta decana-N,N-diacetic acid (DACDA), an anionic side potassium tetrakis (4-chlorophenyl) borate (KTCPB), a plasticizer o-nitro phenyl octyl ether (NPOE) and a polyvinyl chloride (PVC) matrix support. A good response was obtained with a slope of 19.53 ± 1.62 mV/decade and the electrode gave responses with a detection limit of 3.92x10-6 M. The measurement range was wide (10-5-10-1 M) and the responses time was about 27 seconds. The electrode could measure lanthanum ion with a few interfering alkali, earth alkali and transition elements.
USIA PAKAI DAN PENGARUH OKSIDATOR-REDUKTOR PADA POTENSIAL ELEKTRODA SELEKTIF ION (ESI) HIDROGEN DENGAN BAHAN AKTIF ANTIMONI Masykur, Abu; Noviandri, Indra; ., Buchari
Alchemy Jurnal Penelitian Kimia Vol 1, No 2 (2002)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Usia pakai dan pengaruh oksidator-reduktor pada potensial elektroda selektif ion (ESI) hidrogen dengan bahan campuran antimoni, parafin dan grafit telah diteliti. Dengan penyimpanan dalam keadaan kering, elektroda dapat digunakan untuk lebih dari 150 kali penentuan dan kinerja elektroda dapat diperbaiki kembali sepanjang permukaan elektroda dapat diperbaharui. Oksidator dan reduktor yang berpengaruh paling besar berturut turut adalah kalium permanganate, ammoniumpersulfat, kalium persulfat, FeCl3, asam askorbat, natrium tiosulfat dan natrium oksalat.  Elektroda dapat digunakan untuk mengukur pH larutan dalam air baik sampel nyata maupun sampel buatan.   
The Effect of pH and Concentration of KNO3 Solution to the Performance of Nd3+ Ion Selective Electrode Using HPMBP Ionophore Sosidi, Husain; Buchari, Buchari; Noviandri, Indra
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.7 KB) | DOI: 10.20961/jkpk.v3i3.22732

Abstract

The phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP) synthesized and characterized as ionophore in potentiometric analysis of ion selective electrode method (ISE) with polytetrafluoroethylene (PTFE) as the supporting phase. The pH and concentration of the ionic strength adjuster (ISA) were varied to know at the optimum pH and concentration of the ion-selective electrode (ESI) KNO3, thus potential Nd3+ gives the best performance. Before use the PTFE membrane was immersed in a chloroform-HPMBP solution of 1.5-2.0% w/v for 24 h. The pH variation of the buffer solution was adjusted to the pH range of 2-10 using HCl and NaOH solutions, whereas the concentration of KNO3 varies from 10-1 to 10-3 M. The concentration range of Nd3+ is between 10-2 and 10-7 M. The electrode potential measurement results (ENd) obtained the best performance value at pH 4 with KNO3 concentration of 10-2 M, sensitivity (S) 18.39 ± 1.2 mV/decade and response time less than 23 s.
Optimasi Pembuatan Elektroda Pasta Karbon Termodifikasi Poli(Metil Jingga) untuk Penentuan Bisphenol A SecaraVoltammetri Puspita, Fitria; Noviandri, Indra
WARTA AKAB Vol 45, No 1 (2021): Warta AKAB
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.871 KB) | DOI: 10.55075/wa.v45i1.3

Abstract

Bisphenol A (BPA) merupakan komponen dasar dalam pembuatan plastik polikarbonat yang sering dimanfaatkan sebagai wadah penyimpanan makanan dan minuman, pipa, mainan anak, dan peralatan medis. Penelitian menunjukkan bahwa molekul-molekul BPA dapat terlepas dari plastik pada kondisi penyimpanan yang tidak memadai sehingga dapat tertelan oleh manusia. Sementara itu, keberadaan BPA berlebih dalam tubuh manusia berbahaya bagi kesehatan. Oleh karena itu, penentuan BPA dalam produk plastik polikarbonat penting untuk dilakukan. Pada penelitian ini telah dikembangkan metode analisis voltammetri menggunakan elektroda pasta karbon (EPK) yang dimodifikasi dengan poli(metil jingga)untuk penentuan BPA. Modifikasi EPK dilakukan melalui proses elektropolimerisasi menggunakan teknik voltammetri siklik CV) pada larutan yang mengandung metil jingga (MJ)dalam larutan buffer fosfat 0,1 M pH 7 sebagai elektrolit pendukung. Selanjutnya, dilakukan studi untuk mengetahui kondisi optimum modifikasi elektroda meliputi konsentrasi larutan MO untuk elektropolimerisasi, jumlah siklus elektropolimerisasi, dan pH larutan analit saat pengukuran.Berdasarkan penelitian yang telah dilakukan, disimpulkan bahwa elektroda pasta karbon termodifikasi poli(metil jingga) dengan konsentrasi 0,5 mM sebanyak 15 siklus menunjukkan kinerja paling baik untuk mengukur BPA pH 3 dalam hal sensitivitas.Kata kunci:BPA; elektroda pasta karbon; poli(metil jingga); voltammetri
The Use of Nata de Coco Membrane as Biosensor Material Tri Mulyono; Asnawati Asnawati; Indra Noviandri; Buchari Buchari
Jurnal ILMU DASAR Vol 8 No 2 (2007)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

Nata de coco has been characterized as filter toward glucose solutions. Standard nata de coco membrane can not be used as membrane because of variations of thickness. It has unequal weight if it was made thinner. Based on its character, nata de coco had been made in various incubation times. Three days incubation time membrane have passed up 76.84 % glucose, 61.15  Lm -2hr -1 flux/permeability. In Low concentration, it’s produced permeate 87% and decrease in increasing concentration. Structures of membrane morphology showed that existence of bovine serum albumin (BSA) in glucose solution possibility didn't influence determination of glucose in blood.
Co-Authors Abu Masykur Asnawati Asnawati Buchari . Buchari Buchari Buchari Buchari Didin Mujahidin Husain Sosidi Pirim Setiarso Puspita, Fitria Susanto Imam Rahayu Suyanta Suyanta Tri Mulyono