scholarly journals Indirect Determination of Alkali Metals and Lead by Fractional Dissolution/Ion Chromatography of Sulfates Deposited on Surface of Sulfur Dioxide-Treated Lead Glass

2005 ◽  
Vol 113 (1322) ◽  
pp. 666-668
Author(s):  
Hiroshi MITSUMATA ◽  
Yoshiyuki KITA ◽  
Kazuo SAIMOTO
Keyword(s):  
Sulfur Dioxide ◽  
Ion Chromatography ◽  
Alkali Metals ◽  
Lead Glass ◽  
Indirect Determination ◽  
Fractional Dissolution

Determination of atmospheric sulfur dioxide by ion chromatography in the city of Cabimas, Venezuela

1996 ◽  
Vol 739 (1-2) ◽  
pp. 295-299 ◽  
Author(s):  
Harvi Velásquez ◽  
Hervín Ramírez ◽  
José Díaz ◽  
Marlene González de Nava ◽  
Beatrice Sosa de Borrego ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Ion Chromatography ◽  
Atmospheric Sulfur ◽  
Atmospheric Sulfur Dioxide ◽  
The City

Indirect determination of trace amounts of fluoride in natural waters by ion chromatography: a comparison of on-line post-column fluorimetry and ICP-MS detectors

The Analyst ◽  
1999 ◽  
Vol 124 (1) ◽  
pp. 27-31 ◽  
Author(s):  
María Montes Bayón ◽  
Ana Rodríguez Garcia ◽  
J. Ignacio García Alonso ◽  
Alfredo Sanz-Medel
Keyword(s):  
Ion Chromatography ◽  
Natural Waters ◽  
Indirect Determination ◽  
Icp Ms ◽  
On Line

Determination of sulfur dioxide, nitrogen oxides, and carbon dioxide in emissions from electric utility plants by alkaline permanganate sampling and ion chromatography

1985 ◽  
Vol 57 (8) ◽  
pp. 1586-1590 ◽  
Author(s):  
John H. Margeson ◽  
Joseph E. Knoll ◽  
M. Rodney. Midgett ◽  
Guy B. Oldaker ◽  
Wayne E. Reynolds
Keyword(s):  
Carbon Dioxide ◽  
Sulfur Dioxide ◽  
Nitrogen Oxides ◽  
Ion Chromatography ◽  
Electric Utility ◽  
Alkaline Permanganate

Determination of sulfur dioxide by adsorption on a solid sorbent followed by ion chromatography analysis

AIHAJ ◽  
1980 ◽  
Vol 41 (7) ◽  
pp. 485-488 ◽  
Author(s):  
DAVID L SMITH ◽  
WALTER S. KIM ◽  
RICHARD E. KUPEL
Keyword(s):  
Sulfur Dioxide ◽  
Ion Chromatography ◽  
Solid Sorbent ◽  
Chromatography Analysis

Determination of Free Sulfites (SO3–2) in Dried Fruits Processed with Sulfur Dioxide by Ion Chromatography through Anion Exchange Column and Conductivity Detection

2013 ◽  
Vol 96 (5) ◽  
pp. 1103-1108 ◽  
Author(s):  
Benjamin S Liao ◽  
Jacqueline C Sram ◽  
Darin J Files
Keyword(s):  
Sulfur Dioxide ◽  
Anion Exchange ◽  
Ion Chromatography ◽  
Room Temperature ◽  
Anion Exchange Column ◽  
Dried Fruits ◽  
Exchange Column ◽  
Sample Extract ◽  
Sample Extraction

Abstract A simple and effective anion ion chromatography (IC) method with anion exchange column and conductivity detector has been developed to determine free sulfites (SO3–2) in dried fruits processed with sulfur dioxide. No oxidation agent, such as hydrogen peroxide, is used to convert sulfites to sulfates for IC analysis. In addition, no stabilizing agent, such as formaldehyde, fructose or EDTA, is required during the sample extraction. This method uses aqueous 0.2 N NaOH as the solvent for standard preparation and sample extraction. The sulfites, either prepared from standard sodium sulfite powder or extracted from food samples, are presumed to be unbound SO3–2 in aqueous 0.2 N NaOH (pH > 13), because the bound sulfites in the sample matrix are released at pH > 10. In this study, sulfites in the standard solutions were stable at room temperature (i.e., 15–25°C) for up to 12 days. The lowest standard of the linear calibration curve is set at 1.59 μg/mL SO3–2 (equivalent to 6.36 μg/g sample with no dilution) for analysis of processed dried fruits that would contain high levels (>1000 μg/g) of sulfites. As a consequence, this method typically requires significant dilution of the sample extract. Samples are prepared with a simple procedure of sample compositing, extraction with aqueous 0.2 N NaOH, centrifugation, dilution as needed, and filtration prior to IC. The sulfites in these sample extracts are stable at room temperature for up to 20 h. Using anion IC, the sulfites are eluted under isocratic conditions with 10 mM aqueous sodium carbonate solution as the mobile phase passing through an anion exchange column. The sulfites are easily separated, with an analysis run time of 18 min, regardless of the dried fruit matrix. Recoveries from samples spiked with sodium sulfites were demonstrated to be between 81 and 105% for five different fruit matrixes (apricot, golden grape, white peach, fig, and mango). Overall, this method is simple to perform and effective for the determination of high levels of sulfites in dried fruits.

Indirect determination of cyanide by single-column ion chromatography

1982 ◽  
Vol 54 (4) ◽  
pp. 830-832 ◽  
Author(s):  
D. L. DuVal ◽  
J. S. Fritz ◽  
D. T. Gjerde
Keyword(s):  
Ion Chromatography ◽  
Indirect Determination ◽  
Single Column
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