Determination of Heavy Metals by Inductively Coupled Plasma Optical Emission Spectrometry in Water Samples from Lake Iripixi, Oriximiná, PA, Brazil

da Cruz, Ronison Santos; Ribeiro, Joseph Simões; de Moura, Lucinewton Silva; Lopes, Ruy Bessa; do Carmo Freitas Faial, Kelson; Gul, Kashif; Malik, Sumeet; Taube, Paulo Sérgio

Determination of Heavy Metals by Inductively Coupled Plasma Optical Emission Spectrometry in Water Samples from Lake Iripixi, Oriximiná, PA, Brazil

2022

The presented study sheds light on the applicability of inductively coupled plasma optical emission spectrometry (ICP-OES) for the multielement analysis of naturally obtained water. The technique mainly focused on the determination of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn) which are considered to be toxic metals and have deteriorating health impacts. The water samples were collected from Lake Iripixi (1°46′00″S and 55°51′30″W) located in the municipality of Oriximiná, PA, Brazil. The validation characteristics of the method including the limit of detection (LOD) and limit of quantification (LOQ) were also studied which were obtained in a satisfactory range for all heavy metals. The physicochemical characteristics of the soil like dissolved oxygen (DO), pH, conductivity, and total dissolved solids (TDS) were also determined. The most suitable emission wavelengths were selected for the analysis of each toxic metal. The LOD and LOQ results showed that the method is suitable, simple, sensitive, and practical for the analysis of toxic metals.

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