Direct Measurement of Minerals (Fe, Zn, Cu, Mn) in Wine Using Flame Atomic Absorption Spectrophotometry

Flame atomic absorption spectrophotometry is often inferior in terms of sensitivity for many elements when compared with electrothermal atomic absorption spectrophotometry (also known as graphite furnace atomic absorption spectrophotometry and non-flame atomic absorption spectrophotometry) and inductively coupled plasma (ICP) atomic emission spectrometry. However, the method is capable of directly measuring samples with a complex matrix and also features easy operability and maintainability.
This article introduces an example of the direct measurement of minerals, iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn), that are included in a commercially available wine using a flame atomic absorption spectrophotometer and the evaluations of spike-and-recovery rates and long-term (multi-sample) stability.