SPESIASI Cr3+ DAN Cr6+ MENGGUNAKAN METODA CYCLIC VOLTAMMETRY DENGAN ELEKTRODA PLATINA (Pt) DARI BUSI BEKAS

MUTHOHHAROH, THAIFAH and Suheryanto, Suheryanto and Syarif, Nirwan (2014) SPESIASI Cr3+ DAN Cr6+ MENGGUNAKAN METODA CYCLIC VOLTAMMETRY DENGAN ELEKTRODA PLATINA (Pt) DARI BUSI BEKAS. Undergraduate thesis, Sriwijaya University.

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Abstract

Research about speciation of Cr34 and Cr64 using cyclic voltammetry method with platinum electrode (Pt) from waste spark plug (PtBB) had been done. This study aims to determine the optimum condition of Cr34 danCr64 measurement. To determine the optimum condition, variables which were leamt including pH, deposition time, and scan rate towards current. The result showed that the PtBB electrode can be used as working electrode in the analysis of Cr3+dan Cr64 speciation. The optimum condition of Cr34 measurement in pH 6, deposition time of 30 seconds, and scan rate 160 mV/s. Meanwhile, for Cr in pH 4, deposition time 60 seconds, and scan rate 140 mV/s. According to statistic measurement, linearity ofthe calibrationcurveforCr3+was achieved inthe concentration range between 0,1-1 pg/L, r = 0,9539, and detection limit which was Cr3+0,602 pg/L. Meanwhile, for Cr64 in concentration range between 0,1-1 pg/L, r = 0,9995 and detection limit of Cr64 which was 0,059 pg/L.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	cyclic voltammetry, platinum electrode, waste spark plug, chromium speciation
Subjects:	Q Science > QD Chemistry > QD146-197 Inorganic chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Mrs Furika Furika
Date Deposited:	09 Jun 2022 04:37
Last Modified:	09 Jun 2022 04:37
URI:	http://repository.unsri.ac.id/id/eprint/71081

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