Direct Analysis of Beer Using HR ICP-OES

This technical report details the methodology for analyzing beer using high-resolution inductively coupled plasma optical emission spectroscopy (HR ICP-OES). The objective is to monitor metallic contents in beer and its precursors, which is critical for quality control in the brewing industry. The report outlines the challenges associated with beer analysis, including the presence of total dissolved solids and volatile components, which can affect measurement precision. It describes sample preparation techniques, including sonication and argon stream degassing, and discusses the calibration process using matrix-matched standards. The PlasmaQuant 9100 Elite instrument is highlighted for its exceptional matrix tolerance and high-resolution capabilities, allowing for accurate and precise measurements without sample dilution. Results from the analysis demonstrate the effectiveness of the methodology, achieving low limits of detection and high recovery rates for various metals. The report concludes with a discussion on the robustness of the method and its applicability in routine quality control laboratories.