Research Article
An experimental design approach for determination of rare earth elements as a complex with DTPA ligand by voltammetry method
@INPROCEEDINGS{10.4108/eai.11-7-2019.2298032, author={Santhy Wyantuti and Uji Pratomo and Sarah Besylda Anwar and Yeni Wahyuni Hartati and Anni Anggraeni and Husein H. Bahti}, title={An experimental design approach for determination of rare earth elements as a complex with DTPA ligand by voltammetry method }, proceedings={Proceedings of the 1st International Conference on Islam, Science and Technology, ICONISTECH 2019, 11-12 July 2019, Bandung, Indonesia.}, publisher={EAI}, proceedings_a={ICONISTECH}, year={2021}, month={1}, keywords={rare earth elements differential pulse voltammetry experimental design dtpa}, doi={10.4108/eai.11-7-2019.2298032} }- Santhy Wyantuti
Uji Pratomo
Sarah Besylda Anwar
Yeni Wahyuni Hartati
Anni Anggraeni
Husein H. Bahti
Year: 2021
An experimental design approach for determination of rare earth elements as a complex with DTPA ligand by voltammetry method
ICONISTECH
EAI
DOI: 10.4108/eai.11-7-2019.2298032
Abstract
A study related to fast and simultaneously method for detection of rare earth elements (REEs) is still challenging. The combination methods of voltammetric and experimental design are suggested to not only provide simple sample preparation and swift analysis time but also concurrently and low detection limit. In the present work, Samarium (Sm), Dysprosium (Dy) and Europium (Eu) were chosen as a sample of REE. Those metals were analyzed as a complex form with Diethylenetriamine Pentaacetic Acid ligand (DTPA). A Plackett-Burman experimental design was conducted to determine the important factors which were optimized by Box-Behnken. An optimum 5 factors, from total 11 factors, have the potential to be the main effect which are: the electrolyte solution NH4Cl 0.10 M, the pH at 5.15, the scan rate of 0.05 V/s, the DTPA ligand concentration 267.67 mg/L and the pulse amplitude of 0.5489 V. Each REE and it`s mixture were analyzed under optimum condition. The detection limit for Sm, Dy and Eu were found as 27.44 mg/L, 27.63 mg/L, and 27.89 mg/L, respectively. The accuracy and recovery value for Sm = 96,80% and 97.88%; for Dy = 98,24% and 93.40%; and for Eu = 94,28% and 99.27%, respectively.
