February 2012
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Environmental
Cost-Effective Determination of Inorganic Anions and Cations in Municipal Drinking Water Using Capillary Ion Chromatography
Fei Pang, Terri Christison, and Khalil Divan, Thermo Fisher Scientific
Capillary-scale ion chromatography systems can be operated continuously, reducing eluent preparation, system startup, and equilibration times, and requiring less frequent calibrations. This provides significant cost savings for drinking water analysis.
 
Capillary Ion Chromatography Mass Spectrometry for Trace Environmental Analysis
Leo Jinyuan Wang, Jonathan Beck, and William C. Schnute, Thermo Fisher Scientific
Using capillary IC in conjunction with the optimized ESI source, this study demonstrates successful applications for trace level environmental analysis, including common anions and organic acids, perchlorate, and residue of the herbicide endothall in environmental water samples.
 
Hexavalent Chromium Determination by Two-Dimensional Capillary Ion Chromatography Using a Monolith Concentrator Column
John Madden, Kannan Srinivasan, Chris Pohl, and Navette Shirakawa, Thermo Fisher Scientific
A two-dimensional (2D) method for hexavalent chromium determination in drinking water samples using suppressed conductivity detection. Combining standard-bore and capillary columns yields minimum detection limits (MDLs) better than existing methods.
Beverage Testing
Determination of Carbohydrates in Fruit Juice Using Capillary High-Performance Anion-Exchange Chromatography
Terri Christison, Jun Cheng, and Khalil Divan, Thermo Fisher Scientific
Glucose, fructose, and sucrose in fruit juices are well resolved using high-performance anion-exchange chromatography, pulsed amperometric detection, and an electrolytically generated potassium hydroxide eluent.
 
Determination of Inorganic and Organic Acids in Apple and Orange Juice Samples Using Capillary IC
Terri Christison, Fei Pang, and Khalil Divan, Thermo Fisher Scientific
Organic acid profiles can be used to identify juice products and identify adulteration by other juices. The capillary IC system is designed to run continuously, saving time spent on equilibrating and recalibration typically needed after each start-up, making this system ideal for dedicated analyses such as juice profiling.
 
Determination of Anions and Organic Acids in Brewed Coffee Samples Using Capillary IC
Terri Christison, Fei Pang, and Khalil Divan, Thermo Fisher Scientific
Inorganic anions and organic acid anions in caffeinated and decaffeinated brewed coffee samples are separated within 20 min using a capillary IC system. This analysis is designed to monitor coffee maturation, ensure coffee bean quality, and to determine extent of adulteration in purchased beans.
Pharmaceuticals
Implementation of a Walk-Up High-Pressure Capillary Ion Chromatograph for the Fast Separation of Pharmaceutically Relevant Inorganic Anions and Cations
Terri Christison, John E. Madden, Fei Pang, and Khalil Divan, Thermo Fisher Scientific
Determination of inorganic anions and cations in two different drugs using a capillary IC system is described. Reagent-free capillary systems deliver fast results by reducing eluent preparation, system startup time, and equilibration time, and require less frequent calibrations.
 
Quantitative Determination of Bisphosphonate Pharmaceuticals and Excipients by Capillary Ion Chromatography Mass Spectrometry
Leo Jinyuan Wang, Marcus Miller, and William Schnute, Thermo Fisher Scientific
A quantitative method for the direct analysis of bisphosphonates and excipients in prescription tablets using capillary IC with conductivity and mass spectrometric detection.
Power
Determination of Trace Levels of Inorganic Anions in High-Purity Water Using Capillary Ion Chromatography
Terri Christison, Yan Liu, and Khalil Divan, Thermo Fisher Scientific
A standard autosampler can be used to preconcentrate the 100–500 µL samples typically used for trace level analysis with a capillary IC system. This method is easier and faster than concentrating the 10–50 mL sample required for standard-bore format systems.

Contact Editor - Meg Evans

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