Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Jurnal Kimia Riset Indonesian Journal of Chemistry
Usreg Sri Handajani
Departeman Kimia, Fakultas Sains Dan Teknologi, Universitas Airlangga Kampus C Mulyorejo, Surabaya, 60115
Chemical Engineering, Chemistry & Bioengineering Chemistry

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PENGEMBANGAN ELEKTRODA PASTA KARBON TERMODIFIKASI MIP DENGAN MONOMER ASAM METAKRILAT SEBAGAI SENSOR PADA ANALISIS KREATIN SECARA POTENSIOMETRI Usreg Sri Handajani; Cahya Nurrahmi H Amilianti; Miratul Khasanah
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (836.475 KB) | DOI: 10.20473/jkr.v2i2.6699

Abstract

Pada penelitian ini telah dilakukan pengembangan elektroda pasta karbon/MIP untuk analisis kreatin secara potensiometri. Pemilihan teknik imprinting bertujuan untuk membentuk cetakan yang sesuai dengan sisi aktif kreatin pada MIP.  Elektroda yang dibuat dari campuran karbon aktif, parafin, dan MIP dengan perbandingan 11:7:2 bagian menunjukkan kinerja optimum. Kinerja elektroda pasta karbon/MIP ditunjukkan oleh nilai faktor Nernst dan linieritas pengukuran yaitu 27,2 mV/dekade dan 0,9915 pada konsentrasi jangkauan pengkuran 10-6-10-2 M, limit deteksi sebesar 1,1x10-6 M, akurasi 55-125,8%, dan nilai koefisien variasinya 0,27-0,60%. Elektroda masih memberikan kinerja yang baik hingga pemakaian ke-85. Uji selektivitas terhadap elektroda dilakukan dengan menggunakan matriks glukosa dan menunjukkan hasil bahwa glukosa pada konsentrasi rendah dan normal dalam darah tidak mengganggu analisis kreatin, tetapi glukosa pada konsentrasi tinggi mengganggu proses analisis kreatin.
Imprinted Zeolite Modified Carbon Paste Electrode as a Selective Sensor for Blood Glucose Analysis by Potentiometry Miratul Khasanah; Alfa Akustia Widati; Usreg Sri Handajani; Muji Harsini; Bahrotul Ilmiah; Irene Dinda Oktavia
Indonesian Journal of Chemistry Vol 20, No 6 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.49820

Abstract

Imprinted zeolite modified carbon paste (carbon paste-IZ) electrode had been developed as a sensor to analyze blood glucose content by potentiometry. The used zeolite was Lynde Type A (LTA) that synthesized with a mole ratio of Na2O, Al2O3, SiO2 and H2O of 4:1:1.8:270, respectively while non-imprinted zeolite was prepared with a mole ratio of glucose/Si of 0.0306. Glucose was then extracted from the zeolite framework using hot water (80 °C) to produce imprinted zeolite (IZ). The carbon paste-IZ electrode prepared from activated carbon, paraffin pastilles, and IZ with a mass ratio of 5:4:1 showed the best performance. The modified electrode demonstrated the measurement range of 10–4-10–2 M, the Nernst factor of 29.55 mV/decade, the response time less than 120 s, and the detection limit of 5.62 × 10–5 M. Ascorbic acid, uric acid, urea and creatinine did not interfere on the glucose analysis by potentiometry. Comparison test with spectrophotometry showed an accuracy of (90.7 ± 1.4)% (n = 5), while the application of the electrode to analyze five spiked serum samples showed recovery of (92.2 ± 1.3)% (n = 5). The electrode was stable for up to 9 weeks (168 times usage). Based on its performance, the developed electrode can be applied to analyze glucose in human serum sample and recommended for used in the medical field.
Co-Authors Alfa Akustia Widati Bahrotul Ilmiah Cahya Nurrahmi H Amilianti Irene Dinda Oktavia Miratul Khasanah Muji Harsini