Thin Layer Potential Scan Coulometry. Determination of Metal Ions and of Halide Ions Using a Mercury-Coated Platinum Electrode.

1965 ◽  
Vol 37 (11) ◽  
pp. 1317-1321 ◽  
Author(s):  
D. M. Oglesby ◽  
L. B. Anderson ◽  
Bruce. McDuffie ◽  
C. N. Reilley
Keyword(s):  
Thin Layer ◽  
Metal Ions ◽  
Platinum Electrode ◽  
Halide Ions ◽  
Layer Potential

scholarly journals Colorimetric Determination of Silver in Synthetically Prepared Ores with Preliminary Separation from Associated Metal Ions by Thin-Layer Chromatography

1999 ◽  
Vol 82 (1) ◽  
pp. 172-176 ◽  
Author(s):  
Ali Mohammad ◽  
Jay Pal Singh Chahar
Keyword(s):  
Thin Layer ◽  
Metal Ions ◽  
Thin Layer Chromatography ◽  
Colorimetric Method ◽  
Colorimetric Determination ◽  
Mobile Phases ◽  
Preliminary Separation ◽  
Layer Chromatography ◽  
Tlc Separation

Abstract Thin-layer chromatography (TLC) of metal ions on layers of microcrystalline cellulose, alumina G, and their binary mixtures was performed with aqueous solutions of ammonia (NH3), acetic acid (HOAc), sodium acetate (NaOAc), ammonium acetate (NH4OAc), and sodium nitrate (NaNO3) as mobile phases. Ag+ was separated from other metal ions by using a mixed layer with 1.0M aqueous NH3 as mobile phase. Some important binary, ternary, and quaternary separations were achieved. The effect of acid-base equilibria on the retention behavior of Ag+ was examined. After TLC separation, Ag+ was determined quantitatively by spectrophotometry using dithizone solution (in acetone) as chromogenic reagent. The TLC–colorimetric method was applied to recovery of Ag+ from horn silver (AgCI) and argentite (Ag2S).

DETERMINATION OF TRACE METAL IONS USING PORPHYRINS AS CHELATING AGENTS BY HIGH PERFORMANCE THIN LAYER CHROMATOGRAPHY-DENSITOMETRY

2010 ◽  
Vol 33 (6) ◽  
pp. 748-760 ◽  
Author(s):  
Serap Seyhan Bozkurt ◽  
Ipek Kaynak Çavdar ◽  
H. Mine Kurtbay ◽  
Melek Merdivan
Keyword(s):  
Trace Metal ◽  
Thin Layer ◽  
Metal Ions ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Chelating Agents ◽  
Trace Metal Ions ◽  
Layer Chromatography

Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu.

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Camilo Fuentes Serrano ◽  
Juan Reinaldo Estevez Alvares ◽  
Alfredo Montero Alvarez ◽  
Ivan Pupo Gonzales ◽  
Zahily Herrero Fernandez ◽  
...  
Keyword(s):  
Thin Layer ◽  
Expanded Uncertainty ◽  
Considerable Decrease ◽  
X Ray ◽  
Precipitation Efficiency ◽  
Method Of Determination ◽  
Sensitivity Curves ◽  
Order Of Magnitude ◽  
Metrological Parameters

A method for determination of Cr, Fe, Co, Ni, Cu, Zn, Hg and Pb in waters by Energy Dispersive X Ray Fluorescence (EDXRF) was implemented, using a radioisotopic source of 238Pu. For previous concentration was employed a procedure including a coprecipitation step with ammonium pyrrolidinedithiocarbamate (APDC) as quelant agent, the separation of the phases by filtration, the measurement of filter by EDXRF and quantification by a thin layer absolute method. Sensitivity curves for K and L lines were obtained respectively. The sensitivity for most elements was greater by an order of magnitude in the case of measurement with a source of 238Pu instead of 109Cd, which means a considerable decrease in measurement times. The influence of the concentration in the precipitation efficiency was evaluated for each element. In all cases the recoveries are close to 100%, for this reason it can be affirmed that the method of determination of the studied elements is quantitative. Metrological parameters of the method such as trueness, precision, detection limit and uncertainty were calculated. A procedure to calculate the uncertainty of the method was elaborated; the most significant source of uncertainty for the thin layer EDXRF method is associated with the determination of instrumental sensitivities. The error associated with the determination, expressed as expanded uncertainty (in %), varied from 15.4% for low element concentrations (2.5-5 μg/L) to 5.4% for the higher concentration range (20-25 μg/L).

Development and validation of a high-performance thin-layer chromatography method for the determination of artesunate and amodiaquine in tablet formulations

2017 ◽  
Vol 30 (4) ◽  
pp. 307-312
Author(s):  
Yonah H. Mwalwisi ◽  
Seraphina C. Omolo ◽  
Ludwig Hoellein ◽  
Danstan H. Shewiyo ◽  
Ulrike Holzgrabe ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Chromatography Method ◽  
Thin Layer Chromatography Method ◽  
Tablet Formulations ◽  
Development And Validation ◽  
Layer Chromatography

Development and validation of a high-performance thin-layer chromatographic method for the determination of biomarker β-amyrin in the leaves of differentFicusspecies

2015 ◽  
Vol 28 (3) ◽  
pp. 223-228 ◽  
Author(s):  
Omer A. Basudan ◽  
Perwez Alam ◽  
Nasir A. Siddiqui ◽  
Mohamed F. Alajmi ◽  
Adnan J. Alrehaily ◽  
...  
Keyword(s):  
Thin Layer ◽  
High Performance ◽  
Chromatographic Method ◽  
Development And Validation
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