Ensuring the ion balance in water samples is a fundamental requirement in environmental and quality control laboratories. This application report presents a streamlined method for determining the ratio of cations and anions in natural and drinking water using inductively coupled plasma optical emission spectrometry (ICP-OES). The approach adheres to DIN 38402-62 and APHA Method 1030E standards, enabling precise quantification of major cations such as calcium, magnesium, sodium, and potassium, as well as phosphorus and sulfur. The method supports rapid validation of electroneutrality, with deviations immediately flagged through integrated software calculations. Results from real-world mineral water samples demonstrate high accuracy and reproducibility, with ion balance deviations well within acceptable limits.
The elemental analysis was performed using the SPECTRO GENESIS ICP-OES with Dual Side-On Plasma Observation (DSOI). This configuration enhances sensitivity and eliminates axial view interferences, making it ideal for routine water analysis. The system’s full-spectrum capability, robust matrix tolerance, and seamless integration with ICP Analyzer Pro software allow for efficient, automated workflows. With minimal sample preparation and high throughput, the SPECTRO GENESIS ICP-OES offers a reliable solution for laboratories seeking fast, accurate, and compliant ion balance assessments.
Learn more in this compelling ICP-OES application report.