Exploring the working range of automated standard dilution analysis of nutrient elements in foods by inductively coupled plasma optical emission spectrometry

Abstract

Inductively coupled plasma optical emission spectrometry (ICP-OES) is an important tool for measuring nutrient elements in food. ICP-OES methods typically determine analytical concentrations using external standard calibration, but can be...

Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

“…Owing to interferences arising from complex matrices, over the years various calibration methods have been explored, including external calibration, internal standardisation, matrix-matched calibration and the standard addition methods. The determination of nutrient elements in foods by ICP-OES was the case of study for Carter and co-workers, 130 who wanted to overcome the difficulties arising from variable and complex matrices as well as the time-consuming approach of standard additions. To this aim, they investigated the potential of automated online standard dilution analysis, an approach that combines internal standardisation and matrix matched calibration, for the determination of 10 nutrient elements (Ca, Cu, Fe, K, Mg, Mn, Na, P, S, and Zn) in ten food CRMs and four fortified real samples (breaded chicken, corn flakes, Italian dressing and vegetable oil).…”

Automated standard dilution analysis using a four-port switching valve for fast inductively coupled plasma optical emission spectrometry determination

“…15 By employing fewer calibration solutions compared to SA, SDA is a faster, greener alternative, as it requires fewer resources and produces less waste, while equally combatting matrix effects. 15,[20][21][22][23][24] In SDA, matrix matching is achieved by using two calibration solutions (S1 and S2) containing each 50% by volume of sample. The other 50% by volume is either a standard solution containing the analytes and an internal standard (for S1), or a blank solution containing a second internal standard (for S2).…”

“…15 By employing fewer calibration solutions compared to SA, SDA is a faster, greener alternative, as it requires fewer resources and produces less waste, while equally combatting matrix effects. 15,20–24…”