Improved ICP-OES analysis of trace calcium in rare-earth matrices with the use of iterative target transformation factor analysis and Kalman filter

2002 ◽  
Vol 17 (6) ◽  
pp. 596-602 ◽  
Author(s):  
Yongnian Ni ◽  
Yingliang Wu ◽  
Serge Kokot
Keyword(s):  
Factor Analysis ◽  
Rare Earth ◽  
Kalman Filter ◽  
Icp Oes ◽  
Transformation Factor

scholarly journals Bioparticles coated with an ionic liquid for the pre-concentration of rare earth elements from microwave-digested tea samples and the subsequent quantification by ETV-ICP-OES

2016 ◽  
Vol 8 (43) ◽  
pp. 7808-7815 ◽  
Author(s):  
Sara Hosseinzadegan ◽  
Winfried Nischkauer ◽  
Katharina Bica ◽  
Andreas Limbeck
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Analytical Procedure ◽  
Icp Oes

An analytical procedure for straight-forward quantification of rare earth elements (REEs) in tea was developed.

scholarly journals Distribution of aluminium among its mobilizable forms in soils of the Jizera Mountains region

2011 ◽  
Vol 50 (No. 8) ◽  
pp. 346-351 ◽  
Author(s):  
L. Mládková ◽  
L. Borůvka ◽  
O. Drábek
Keyword(s):  
Factor Analysis ◽  
Acid Soils ◽  
Total Content ◽  
Soil Characteristics ◽  
Soil Reaction ◽  
Icp Oes ◽  
Soil Factors ◽  
Potential Toxicity

Labile Al forms can be dangerous in acid soils due to their potential toxicity to plants. This paper deals with the distribution of exchangeable, weakly organically bound, and total organically bound Al forms in soils on 98 sites of the Jizera Mountains region. For the extraction of these Al forms, 0.5M KCl (Al<sub>KCl</sub>), 0.3M CuCl<sub>2</sub> (Al<sub>CuCl2</sub>), and 0.05M&nbsp;Na<sub>4</sub>P<sub>2</sub>O<sub>7</sub> (Al<sub>Na4P2O7</sub>) solutions were used, respectively. Aluminium concentrations in all extracts were determined by means of ICP-OES. Following mean concentrations of Al forms were found in the O and B horizons (mg/kg): Al<sub>KCl</sub> &ndash; 1236 and 832, Al<sub>CuCl2</sub>&nbsp;&ndash; 4268 and 1945, and Al<sub>Na4P2O7</sub>&nbsp;&ndash; 5043 and 8420. Basic soil characteristics were determined by commonly used methods. Their influence on Al forms distribution was assessed. Factor analysis showed that the most important soil factors controlling Al forms distribution were soil reaction and the total content of Ca (or Ca and Mg in the B horizon).

Reliability of iterative target transformation factor analysis when using multiwavelength detection for peak tracking in liquid chromatographic separations

1988 ◽  
Vol 60 (24) ◽  
pp. 2745-2751 ◽  
Author(s):  
Joost K. Strasters ◽  
Hugo A. H. Billiet ◽  
Leo. De Galan ◽  
Bernard G. M. Vandeginste ◽  
Gerrit. Kateman
Keyword(s):  
Factor Analysis ◽  
Chromatographic Separations ◽  
Transformation Factor ◽  
Peak Tracking ◽  
Liquid Chromatographic
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