PENENTUAN Cu DAN Zn PADA BUAH STROBERI (Fragaria) DAN BUAH NAGA (Hylocereus undatus) DENGAN METODA VOLTAMMETRI STRIPING ANODA (VSA)
Abstract: Research about
determination of Cu, Zn in strawberry (Fragaria) and dragon fruit (Hylocereus
undatus) by Anodic Stripping voltammetry method have been conducted. Studied
accumulation potential and accumulation time as the optimum parameters used in
this method. The results were obtained optimum conditions 0,3 V accumulation
potential and accumulation time of 120 seconds. At the optimum conditions
obtained relative standard deviation of Cu 1,02% and Zn 4,43%. This method was
applied to the determination of Cu and Zn on strawberry fruit and dragon fruit.
After the measurements of the two samples, found in strawberry 0,014 ug/g Cu and 0,012 ug/g Zn, the dragon fruit is 0,014 ug/g Cu and 0,010 ug/g Zn. Recovery values of Cu 101,3% and Zn
105,8%. Limit of detection (LOD) of Cu and Zn is equal to 0,008 ppb and 0,026
ppb while quantitation limit (LOQ) for Cu and Zn is 0,596 ppb and 0,496 ppb.
Penulis: Veby Ristia Sari,
Zamzibar Zuki, dan Umiati Loekman
Kode Jurnal: jpkimiadd130224
