PENENTUAN Cu DAN Zn PADA TERONG BELANDA (Solanum betaceum) dan WORTEL (Daucus carota) DENGAN METODA VOLTAMMETRI STRIPING ANODA (VSA)
Abstract: Research on
determination of Cu and Zn in Tamarillo (Solanum betaceum) and carrot (Daucus
carota) by Anodic Stripping Voltammetry method (ASV) have been conducted
focused on their accumulation potential and time as the optimum parameters
used. It was found that the optimum accumulation potential of 0.3 V and for
accumulation time of 120 seconds. At these optimum conditions then it was
obtained that the relative standard deviation for Zn was 4.4298 % and for Cu was 1.0228 % on ( 15
mg/L Zn and 10 µg/L Cu with 8 replications (n = 8)). The LOD value for Zn and
Cu were 0.0078 ppb and 0.179 ppb, respectively, while their LOQ respectively were 0,0258 ppb and 0,596 ppb.
All those parameters then were applied to measure two samples, where in
tamarillo there were 0,01436 ppm Zn and 0,01364 ppm Cu while in carrot 0,01318
ppm Zn and 0,0125 ppm Cu with recovery grade ​​for Zn 105.75% and for Cu
100.5%.
Penulis: Rini Mutiara Noviani, Zamzibar Zuki, dan
Yulizar Yusuf
Kode Jurnal: jpkimiadd130232
