Reduction of matrix effects in quantitative and semi-quantitative inductively coupled plasma-optical emission spectrometry using a partial local thermodynamic equilibrium model and an internal standard

2012 ◽  
Vol 76 ◽  
pp. 96-108 ◽  
Author(s):  
Joshua R. Dettman ◽  
John W. Olesik
Author(s):  
T D B Lyon ◽  
C Cunningham ◽  
D J Halls ◽  
J Gibbons ◽  
A Keating ◽  
...  

Methods for the determination of aluminium in serum, dialysate fluid and water by inductively coupled plasma optical emission spectrometry are described and validated. Aluminium was measured at 167 nm using an argon purged monochromator. Matrix effects in serum and dialysate fluid were overcome by using an yttrium internal standard. Serum was found to have a complicated background in the region of 167 nm: Careful selection of the wavelength used for background correction is therefore a pre-requisite for accurate analysis. The method for serum was validated by comparison with electrothermal atomization atomic spectrometry and the limit of agreement determined to be ±0·3 μmol/L. Routine performance in a quality assessment scheme has been highly satisfactory for a period of 1 year. The method is ideal for fast and accurate monitoring of patients potentially at risk from aluminium toxicity.


2016 ◽  
Vol 70 (6) ◽  
Author(s):  
Anna Krejčová ◽  
Tomáš Černohorský ◽  
Lenka Bendakovská

AbstractMatrix effects and practical possibilities of reducing accompanying non-spectral interferences in inductively coupled plasma optical emission spectrometry (ICP-OES) were studied for microconcentric Micromist, concentric and V-groove nebulizers (VGN) coupled with two cyclonic spray chambers of different sizes. The effect of a wide scale of interferents and mixtures thereof in the concentration range of up to 2 mass % (Na, Ca, Ba, La, urea) or up to 20 vol. % (nitric acid) on the analysis of Cd, Cu, K, Mg, Mn, Pb and Zn was investigated in terms of their analytical recovery and Mg(II) 280.27 nm/Mg(I) 285.29 nm line intensity ratio. Recoveries of ionic lines were lower than those of atomic lines (37–102 %) depending on the matrix concentration. The Mg(II)/Mg(I) ratios were found to be 12–15 and they slightly decreased as the matrix load increased. Exceptional behavior of pure La matrix, steeply lowering the recoveries and Mg(II)/Mg(I) ratios was observed. A Micromist nebulizer coupled with a small inner volume spray chamber provided the highest recoveries (94–102 %), lowest matrix effects across the matrix loads and, compared to others, the least significant dependence without worsening of the analytical characteristics (recoveries, signal background ratios and the Mg(II)/Mg(I) ratios) across the studied matrices.


2017 ◽  
Vol 32 (9) ◽  
pp. 1688-1696 ◽  
Author(s):  
Yoseif Makonnen ◽  
William R. MacFarlane ◽  
Majdi L. Geagea ◽  
Diane Beauchemin

A robust Ar–N2–H2plasma enables accurate multielemental analysis of geological and environmental samples without matrix-matching or internal standardization.


2015 ◽  
Vol 30 (10) ◽  
pp. 2223-2234 ◽  
Author(s):  
Helmar Wiltsche ◽  
Monika Winkler ◽  
Paul Tirk

In inductively coupled plasma based techniques the signal enhancing effect of carbon on high ionization potential elements is not only caused by changes in the nebulization efficiency and charge exchange reactions, but also by increased plasma power density and the state of matter of the introduced carbon species.


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