Solid sampling ETV-ICPOES coupled to a nebulization/pre-evaporation system for direct elemental analysis of glutinous rice by external calibration with standard solutions.

Because glutinous rice flour is consumed by millions of individuals around the world, its analysis is essential to ensure its safety. Solid sampling electrothermal vaporization (ETV) coupled to inductively coupled plasma optical emission spectrometry (ICPOES) allows for a quick analysis, precluding the need for time-consuming acid digestion that may also lead to analyte loss or contamination. However, the amount of sample that can be introduced without extinguishing the plasma is limited to about 4mg.