Automated standard dilution analysis

Abstract

Automated standard dilution analysis provides rapid, accurate, and precise calibrations, correcting for both matrix effects and source fluctuations.

Is MIP-OES a suitable alternative to ICP-OES for trace element analysis?

“…Similar improvements in trueness were observed when applying SDA to ICP-OES. [77][78][79][80] However, as expected, SDA-MIP-OES 0 instrumental LODs were higher than those calculated for SDA-ICP-OES. For example, LOD values calculated in similar conditions for Cr, Cu, Mn and Zn were 40, 10, 30 and 500 mg L À1 for SDA-MIP-OES, 75 and 5, 6, 7 and 10 mg L À1 for SDA-ICP-OES, 80 respectively.…”

“…The unknown concentration of analyte in the sample (C sam ) is found from the slope and intercept of the calibration plot. 75 Additional details on, and new approaches to SDA which facilitate data processing and automation can be found elsewhere 77,78 The simultaneous matrix-matching and internal standardization nature of SDA provided signicant improvements in MIP-OES trueness, especially considering MIP's proneness to severe matrix effects. In beer analysis, for example, the average recovery for seven analytes was 113%, 117%, 122%, and 98% for the traditional EC, IS, SA, and for SDA, respectively.…”

“…detection and solution mixing times must match. A better control of the speed in which S1 and S2 mix can be achieved by automating the SDA method, 77,78 which may facilitate matching the time between detection and solution mixing, resulting in more calibration points.…”

“…The unknown concentration of analyte in the sample ( C sam ) is found from the slope and intercept of the calibration plot. 75 Additional details on, and new approaches to SDA which facilitate data processing and automation can be found elsewhere 77,78…”

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

“…14 The preparation and mixing of S1 and S2 during automated SDA were initially carried out with a homemade mixing chamber and later optimized using a simple two channel pinch valve. 14,15…”