Improving analytical method of Sr/Ca ratios in coral skeletons for paleo‐ SST reconstructions using ICP‐OES

2020 ◽  
Vol 18 (6) ◽  
pp. 297-310
Author(s):  
Takaaki K. Watanabe ◽  
Tsuyoshi Watanabe ◽  
Kazuto Ohmori ◽  
Atsuko Yamazaki
Keyword(s):  
Analytical Method ◽  
Icp Oes ◽  
Coral Skeletons

Microwave-induced combustion of graphene for further determination of elemental impurities using ICP-OES and TXRF

2018 ◽  
Vol 33 (11) ◽  
pp. 1910-1916 ◽  
Author(s):  
Airui Zhang ◽  
Hai Wang ◽  
Pengfei Zha ◽  
Meiling Wang ◽  
Haifeng Wang ◽  
...  
Keyword(s):  
Analytical Method ◽  
Icp Oes ◽  
Elemental Impurities

An analytical method of microwave induced combustion (MIC) combined with ICP-OES and TXRF is proposed to determine elemental impurities in graphene.

Analytical Method of Silicon Dioxide in Health Functional Food Products using ICP-OES

2017 ◽  
Vol 32 (5) ◽  
pp. 343-347 ◽  
Author(s):  
Mi-Hyun Ka ◽  
Kwang-Geun Lee ◽  
Heung-Youl Lim ◽  
Gunyoung Lee ◽  
Sang Soon Yun ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Analytical Method ◽  
Functional Food ◽  
Food Products ◽  
Icp Oes

Determination of Zn in Dry Feeds for Cats and Dogs by Energy-Dispersive X-Ray Fluorescence Spectrometry

2016 ◽  
Vol 99 (6) ◽  
pp. 1572-1575 ◽  
Author(s):  
Dayara Virgínia L Ávila ◽  
Sidnei O Souza ◽  
Silvânio Silvério L Costa ◽  
Rennan Geovanny O Araujo ◽  
Carlos Alexandre B Garcia ◽  
...  
Keyword(s):  
Confidence Level ◽  
Analytical Method ◽  
Inductively Coupled Plasma ◽  
Comparative Method ◽  
Direct Analysis ◽  
Energy Dispersive ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
X Ray

Abstract This work describes an analytical method for Zn determination in dry feeds for cats and dogs by energy-dispersive X-ray fluorescence (EDXRF). Samples of dry feed were powdered and prepared in the form of pellets for direct analysis by EDXRF. The LOQ (10σ) was 0.4 mg/kg. The samples were also analyzed by inductively coupled plasma-optical emission spectrometry (ICP-OES) as an independent comparative method. Application of a paired t-test showed no significant differences between Zn concentrations obtained by EDXRF and ICP-OES (at a 95% confidence level). Analysis of variance was also applied to the results and revealed no significant differences between the two techniques (at a 95% confidence level). The precision, expressed as the RSD (n = 3), was RSD < 4.55%. This analytical method provides a simple, rapid, accurate, and precise determination of Zn in dry feeds for cats and dogs by EDXRF as direct, solid-sample analysis.

Multivariate optimization of an analytical method for the analysis of Abruzzo white wines by ICP OES

2020 ◽  
Vol 12 (21) ◽  
pp. 2772-2778
Author(s):  
Fabrizio Ruggieri ◽  
Angelo Antonio D'Archivio ◽  
Martina Foschi ◽  
Maria Anna Maggi
Keyword(s):  
Analytical Method ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Multivariate Optimization ◽  
White Wines ◽  
Inductively Coupled ◽  
Abruzzo Region ◽  
Plasma Optical Emission Spectrometry

Inductively coupled plasma-optical emission spectrometry (ICP OES) method was optimized and applied for determining the concentration of 14 elements (Ba, Ca, Co, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Sr, V, Zn) in white wines of the Abruzzo region (Italy).

scholarly journals Multivariate optimization of an analytical method for the analysis of dog and cat foods by ICP OES

Talanta ◽  
2013 ◽  
Vol 108 ◽  
pp. 157-164 ◽  
Author(s):  
Silvânio Silvério Lopes da Costa ◽  
Ana Cristina Lima Pereira ◽  
Elisangela Andrade Passos ◽  
José do Patrocínio Hora Alves ◽  
Carlos Alexandre Borges Garcia ◽  
...  
Keyword(s):  
Analytical Method ◽  
Icp Oes ◽  
Multivariate Optimization

scholarly journals Development of Analytical Method for Determination of Inorganic Constituents in Powder Refreshment using Dilute Mineral Acids and Detection by ICP OES

2021 ◽  
Author(s):  
Samir Santos ◽  
Silvânio Costa ◽  
Sidnei Souza ◽  
Karina Garcia ◽  
Sarah Soares ◽  
...  
Keyword(s):  
Analytical Method ◽  
Principal Component ◽  
Optical Emission ◽  
Hierarchical Cluster ◽  
Fractional Factorial ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Mineral Acids ◽  
Inorganic Constituents

An analytical method for multi-elementary determination in powder refreshment, based on sample digestion using dilute mineral acids and detection by inductively plasma coupled optical emission spectrometry (ICP OES) is proposed. Chemometric tools, such as fractional factorial design and principal component analysis (PCA) and hierarchical cluster analysis (HCA) were applied to optimize the sample preparation conditions in closed block digester, and Doehlert design for spectrometer operation. Addition and recovery tests and analyses of certified reference material were performed to evaluate the precision and accuracy, and the results confirm the reliability of the proposed method. Limits of quantification (LOQ) between 0.02 and 36 μg g−1 were obtained. The analytical method was applied for determination of 24 inorganic constituents in 20 powder refreshment samples. Calcium, K, Mg, Na, P, S and Ti presented the highest concentrations. The analytical method was adequate for the determinations of inorganic constituents in powder refreshment samples by ICP OES.

Densitometric Identification of Primitive Erythroblasts After Reaction With Diaminobenzidine

1973 ◽  
Vol 31 ◽  
pp. 328-329
Author(s):  
John A. Trotter
Keyword(s):  
Red Blood Cells ◽  
Analytical Method ◽  
Blood Cells ◽  
Guinea Pigs ◽  
Specific Protein ◽  
Visual Examination ◽  
Hemoglobin Synthesis ◽  
Peroxidatic Activity ◽  
Small Density

Hemoglobin is the specific protein of red blood cells. Those cells in which hemoglobin synthesis is initiated are the earliest cells that can presently be considered to be committed to erythropoiesis. In order to identify such early cells electron microscopically, we have made use of the peroxidatic activity of hemoglobin by reacting the marrow of erythropoietically stimulated guinea pigs with diaminobenzidine (DAB). The reaction product appeared as a diffuse and amorphous electron opacity throughout the cytoplasm of reactive cells. The detection of small density increases of such a diffuse nature required an analytical method more sensitive and reliable than the visual examination of micrographs. A procedure was therefore devised for the evaluation of micrographs (negatives) with a densitometer (Weston Photographic Analyzer).

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

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