, vol. 21, issue 2, pp. 2049 - 2058, 2024.
In the compositional analysis of various types of environmental pollution, selecting the appropriate instrumentation is essential. This involves ensuring that the chosen method is suitable for the intended purpose and that the results are valid. In this study, an analytical method using inductively coupled plasma-optical emission spectrometry was developed and validated for the simultaneous determination of eight heavy metals (Cr, Cd, Pb, Co, As, Cu, U, and Th) in groundwater. The validation of the method was based on several parameters of the International Conference on Harmonization, including linearity, accuracy, precision, and sensitivity, expressed by the limit of detection and quantification. The linearity of the method was acceptable over the selected concentration range, with a correlation coefficient of > 0.999. The detection limit for each heavy metal (Cr, Cd, Pb, Co, As, Cu, U, and Th) was determined to be 0.180, 1.718, 1.201, 0.142, 7.030, 2.632, 0.205, and 2.201 μg/L (ppb), respectively. The developed method is non-destructive, simple, accurate, precise, and selective for determining eight heavy metals in groundwater. It can be used to determine these metals in real liquid samples, such as ground, surface, wastewater, aqueous extracts from plants, digested soil, and rock samples.
