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Differential Pulse Voltammetry Technique Using Ferrocene-Modified Carbon Paste Electrodes for Determination of Pb(II) In Kepok Banana


 
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1. Title Title of document Differential Pulse Voltammetry Technique Using Ferrocene-Modified Carbon Paste Electrodes for Determination of Pb(II) In Kepok Banana
 
2. Creator Author's name, affiliation, country Irdhawati Irdhawati; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University; Indonesia
 
2. Creator Author's name, affiliation, country Feby Silvia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University
 
2. Creator Author's name, affiliation, country Emmy Sahara; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University
 
2. Creator Author's name, affiliation, country Nur Alisyah Gani; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University
 
3. Subject Discipline(s) chemistry; analytical chemistry; electrochemistry
 
3. Subject Keyword(s) Carbon paste electrode, differential pulse voltammetry; Pb(II) ion; ferrocene; kepok banana
 
4. Description Abstract The voltammetry method is a field of electrochemistry that measures electric current at a certain potential, which can be used to determine the concentration of inorganic and organic compounds that can be oxidized or reduced. In this research, the differential pulse voltammetry (DPV) technique has been used to determine the content of Pb(II). The carbon paste electrode (CPE) and ferrocene-modified carbon paste electrode (CPE-Fc) were used as working electrodes. This study aims to improve the sensitivity of Pb(II) measurement. Two parameters were optimized were ferrocene composition and scan rate. The validation parameters involved the linear concentration range, detection limit, quantization limit, precision and accuracy. The optimum ferrocene composition was found at 6%, and scan rate was 15 mV/s using CPE, increase to 20 mV/s using CPE-Fc. The validation results showed  the linearity using CPE-Fc  wider than CPE at the peak potential of 0.515 V. The detection and quantization limit values using CPE were 0.1551 µg/L and 0.1556 µg/L, and down to 0.1089 µg/L and 0.1090 µg/L using CPE-Fc. The precision determination for both of CPE and CPE-Fc had good results, indicated by the Horwitz ratio less than two. Percentage of recovery using CPE-Fc of 85.59  8.18%. CPE-Fc at the optimum measurement conditions was used to determine the levels of Pb(II) in kepok banana, and the result was obtained 4.4306  0.0009 mg/kg. The level of Pb content was found to exceed the established threshold based on Standard National Indonesia (ISN) No. 7387:2009  which is 0.5 mg/kg.
 
5. Publisher Organizing agency, location Syarif Hidayatullah State Islamic University
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 2021-02-05
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://journal.uinjkt.ac.id/index.php/valensi/article/view/16610
 
10. Identifier Digital Object Identifier 10.15408/jkv.v6i2.16610
 
11. Source Title; vol., no. (year) Jurnal Kimia Valensi; Jurnal Kimia VALENSI Volume 6, No. 2, November 2020
 
12. Language English=en en
 
13. Relation Supp. Files Data spektrum (526KB)
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
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