December 2009, Sunnyvale, CA—Dionex demonstrates the use of mass spectrometry (MS) as a detector for ion chromatography (IC) in the determination of five common anions and selected organic acids. Application Note 243: Determination of Common Anions and Organic Acids Using Ion Chromatography-Mass Spectrometry describes the use of the MSQ Plus^™ detector for the quantification of low concentrations of target analytes in commercially bottled drinking water.

Compared to other commercially available MS detectors, the MSQ Plus detector provides substantially improved performance for low-molecular-weight analytes. The IC-MS method has gained popularity recently due to the increasing demand for sensitivity, selectivity, confirmation of identity, and structural interpretation. The method described in Application Note 243 demonstrates the use of MS SIM detection in the quantification of analytes at parts per billion levels without prior sample preparation or employing preconcentration, which may be required with other detection methods.

Dionex (NASDAQ:DNEX) is a global leader in the manufacturing and marketing of liquid chromatography and extraction systems, consumables, and software for chemical analysis. The Company's systems are used worldwide in environmental analysis and by the life sciences, chemical, petrochemical, food and beverage, power generation, and electronics industries. Our expertise in applications and instrumentation helps analytical scientists to evaluate and develop pharmaceuticals, establish environmental regulations, and produce better industrial products.

MSQ Plus is a trademark of Thermo Fisher Scientific.