Determination of Aluminium in Serum, Dialysate Fluid and Water by Inductively Coupled Plasma Optical Emission Spectrometry

1995 ◽  
Vol 32 (2) ◽  
pp. 160-166 ◽  
Author(s):  
T D B Lyon ◽  
C Cunningham ◽  
D J Halls ◽  
J Gibbons ◽  
A Keating ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Matrix Effects ◽  
Internal Standard ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Atomic Spectrometry ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry

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.

Determination of Phosphorus and Potassium in Commercial Inorganic Fertilizers by Inductively Coupled Plasma-Optical Emission Spectrometry: Single-Laboratory Validation

2014 ◽  
Vol 97 (3) ◽  
pp. 687-699 ◽  
Author(s):  
James M Bartos ◽  
Barton L Boggs ◽  
J Harold Falls ◽  
Sanford A Siegel
Keyword(s):  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Ammonium Citrate ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry ◽  
Single Laboratory

Abstract A two-part single-laboratory validation study was conducted for determination of the P and K content in commercial fertilizer materials by inductively coupled plasma-optical emission spectrometry (ICP- OES). While several methods exist for determination of P and K in fertilizer products, the main focus of this study was on ICP-OES determination, which offers several unique advantages. Fertilizer samples with consensus P and K values from the Magruder and Association of Fertilizer and Phosphate Chemists (AFPC) check sample programs were selected for this study. Validation materials ranging from 4.4 to 52.4% P2O5 (1.7 to 22.7% P) and 3 to 62% K2O (2.5 to 51.5% K) were utilized. Because all P and K compounds contained in fertilizer materials are not "available" for plants to use, this study was conducted in two parts. Part A focused on ammonium citrate–disodium EDTA as the extraction solvent, as it estimates the pool of fertilizer P and K that is considered available to plants. Part B focused on hydrochloric acid as the digestion solvent, as it estimates the total P and K content of the fertilizer product. Selectivity studies indicated that this method can have a high bias for fertilizer products containing sources of phosphite or organic P compared to gravimetric or colorimetric methods that measure just orthophosphate. Provided the analytical challenges outlined in this study are addressed, this method offers the potential for a quick, accurate, and safe alternative for determining the P and K content of commercial inorganic fertilizer materials.

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