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The natural zeolites (NZs) are low-cost natural materials, available in large quantities in different parts of the world, with good mechanical and thermal properties, ion exchange capacity, ability to adjust pH, high surface area and adsorption capacity. Despite their wide range of applications, the use of NZs is limited in industrial processes (where synthetic zeolites are preferred) due to presence of impurities in their structure and the properties which could not be optimized by nature. These limitations can b...

The inductively coupled plasma optical emission spectrometry (ICP-OES) is recognized as a robust method for the determination of different elements in liquid and solid samples. However, for metals determinations from solid samples, digestion is required in order to dissolve the analytes into liquid solution. It was the aim of this paper to validate the ICP-OES method for determination of metals from zeolite samples after acid digestion. The suitability of three digestion procedures using wet digestion with mineral...