PREKONSENTRASI LOGAM KELUMIT DALAM AIR ALAM DENGAN MENGGUNAKAN KOLOM RESIN

• Main Author: Hala, Yusafir
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/4627
• Institution: Institut Teknologi Bandung

<br>Abstrac :</b><p align="justify"> <br /> An investigation has been carried out to express the trace metals content of Ni, Cu, Zn, and Cd from both aquabidest test samples and natural water from Saguling lake, with preconcentration techniques by the sulphonated resin Dowex 50WX-8 and chelating ion-exchange resins Diaion CR-11 and Chelex-100, and metal determination subsequently by flame AAS.<p align="justify"> The metal recoveries by resins for Ni, Cu, Zn, and Cd are greater than 70, 83, 66, and 63 % respectively, where the resin chelate techniques are simpler and faster than the sulphonated resin in their applications. The local aquabidest contains the tested metals in order of ug.L'', and the metal concentrations are used as corrector after preconcentration process.<p align="justify"> The average of the metal concentrations from Saguling samples (pg.L'') successively by Dowex 50WX-8, Diaion CR-1 i, and Chelex-100 resins are 1.167 ; 1.274 ; and 1.259 for Ni, 1.548 ; 1.590 ; 1.579 for Cu, 1.390 ; 1.508 ; and 1.476 for Zn, whereas for Cd are 0.180 ; 0.203 ; and 0.234. Significance tested at the 95 % confidence interval for analysis results, indicates that the difference between the three resins are not significant.