Direct sampling of food in atomic spectroscopy for trace element analysis

Publication Name: Trac Trends in Analytical Chemistry

Publication Date: 2026-09-01

Volume: 202

Issue: Unknown

Page Range: Unknown

Description:

Direct analysis in atomic spectroscopy offers an efficient and environmentally friendly alternative to conventional digestion-based methods for trace element detection and quantification in food matrices. This review explores applications of direct sample analysis across liquid, semi-liquid and solid food types, including fruit juice, milk and dairy products, alcoholic beverages, honey, fats and oils, seeds and nuts, milk powders, seafood, vegetables, powdered plant-based beverages, and cereals. Elements such as Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, and Pb have been successfully quantified using direct sampling approaches. Analytical techniques such as AAS, ICP-MS, ICP-OES, GD-OES, XRF are critically evaluated, besides hydride generation, MIP-OES, HPLC coupling, laser ionization, and thermospray-assisted approaches. The review emphasizes key aspects influencing analytical performance parameters, matrix effects, reagent usage and measurement conditions. It identifies methodological gaps and suggests future directions to enhance applicability and reliability of direct food analysis using diverse atomic spectrometry techniques.

Open Access: Yes

DOI: 10.1016/j.trac.2026.118973

Authors - 3