Analytical method for detecting and estimating of lanthanide ions paired with transitional elements

H. N. K. AL-Salman


Context: A simple, specific, precise, and stability-indicating high-performance liquid chromatographic method
for chemical analysis of lanthanide ions is detected by measuring the absorbance at 350 nm. The first complexion
lanthanide ions with oxalic acid to obtain very covalent and stability ions in complex, the second-step stability ions
in complex formed with 18-crown-6-ether. Using a validated stability analysis method to separation and estimation,
transient metals will coelunt with lanthanide ions. Objective: A rapid, efficient, cost-effective, and reproducible
isocratic reversed-phase method has been developed and validated for the determination of lanthanides in active
inorganic ions. Materials and Methods: Using mobile phase methane sulfonic acid at pH 3.0, mobile phase was
pumped at a flow rate of 1.0 mL min−1 using isocratic elution through IonPac, CS18 (250 mm × 2 mm, 5 μm)
column. Ultraviolet detection was performed at 350 nm. The method was validated following the IC isocratic.
The standard calibration curve was linear in concentration range for all cations, lanthanides, and transient metals.
Results: The correlation coefficient (R2) for the lanthanides and the transient elements at range (0.9971–1). Also,
was studied the lower limits of detection and the lower limits of quantitation for the lanthanides and the Transient
elements in the standard materials. Recovery was found to be in the range of 93–100% for all ions and the
precision of <1%. Conclusion: The developed method was successfully applied for analytic analysis of standard
solution and also to study the interaction of lanthanides and transient ions at the temperature (25°C).

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