Differential Pulse Voltammetry Study for Quantitative Determination of Dysprosium (III) in Acetonitrile Solution

Abstract

Dysprosium has gained global interest due to its key application in renewable technology, such as wind power technology. The presence of this rare earth element (REE) can be determined by several spectroscopic methods. Recently, a voltammetry method has provided an alternative method for the simple and fast detection of REEs. However, to the best of our knowledge, this experiment is usually carried out in an aqueous solvent, and the response of the REE in an organic solvent by the voltammetry method has rarely been investigated. In this research, the quantitative detection of dysprosium and dysprosium mixtures with samarium, europium and gadolinium in acetonitrile is reported by differential pulse voltammetry. A Box-Behnken design was applied to predict the optimum condition of the measurements. Three factors, namely potential deposition, deposition time and amplitude modulation, were found to significantly influence the signal under optimal conditions, which are -1.0 V, 83.64 s and 0.0929 V, respectively. The surface characterization of dysprosium deposited on a Pt surface shows better deposition under 100% acetonitrile compared to a lower concentration of acetonitrile. The evaluation in this study shows a detection limit of 0.6462 mg•L-1 and a quantitation limit of 2.1419 mg•L-1, with a precision value and recovery value of 99.97% and 93.62%, respectively.

Development of differential pulse voltammetric method for determining samarium (III) through electroanalytical study of the metal ion in acetonitrile using Box–Behnken design

“…The Box–Behnken experimental was used to optimized the selected factors. The design was set to three levels (−1, 0, +1) with up to 15 measurements conducted using the Minitab program 17.1 [ 38 ].…”

“…Amongst the tools for the analysis of chemometric, the Box-Behnken is considered effective to assign the correlation between the results of the response and the relevant factors by employing a sequence of experiments to provide the best responses [ 31 , 32 , 33 , 34 , 35 , 36 ]. The experimental design technique mutual combination with an electroanalytical method was very promising for the future development of the determination of Sm and other REEs in water [ 9 , 20 , 37 , 38 ].…”

The Effect of Acetonitrile Solvent on the Quantitative Determination of Europium (III) by Voltammetry and its Optimization using the Box-Behnken Design

“…Determination of the current response for Eu was carried out with DPV using the optimum conditions from the Box-Behnken design, while Sm, Gd, and Dy were determined using their conditions (Wyantuti et al, 2021a;Wyantuti et al, 2021b;Wyantuti et al, 2021c). Figure 5 shows the current response of each rare earth element, where Eu cannot be assessed from the mixture because its peak is in the same potential range as others.…”

“…Furthermore, it is commonly used in electrochemical systems for the electrodeposition of nickel (Zhu et al, 2010) and silver using a mixed solvent of water, acetonitrile, and TBAP (Mele et al, 2013). In a previous study, the solvent was also used to determine some rare earth metals (Wyantuti et al, 2021a;Wyantuti et al, 2021b;Wyantuti et al, 2021c). The Eu content was also assessed with acetonitrile using the voltammetric method in this study.…”

Utilization of Steepest Ascent and Box-Behnken Design for Determination of Gadolinium in Acetonitrile by Differential Pulse Voltammetry

“…Voltammetry is one of the electrochemical methods used for measuring the current generated against the potential difference applied to the working electrode [11]. Advantages of the voltammetric method include a simple procedure, simultaneous analysis, and better detection limits [12][13][14]. An experimental design such as Steepest Ascent is a method used to detect the direction that the factor is moving to get the maximum response, while Box-Behnken design is used to estimate the interactions that occur to obtain an optimal process [15][16].…”