Elemental Analysis of Mineral Water by Solution-Cathode Glow Discharge-Atomic Emission Spectrometry

摘要

A solution-cathode glow discharge was used for atomic emission spectrometry. The acidic reagent, discharge current, and flow rate were optimized. The detection limits for sodium, potassium, calcium, and magnesium were 1.51, 4.13, 131, and 54.9 mu gL(-1), respectively. The relative standard deviation for five replicates was from 0.52 to 3.00%. Sodium, potassium, calcium, and magnesium were determined in mineral water by solution-cathode glow discharge-atomic emission spectrometry. The results demonstrate that the protocol is suitable for the elemental analysis of mineral water.