Low pressure anion chromatographic apparatus and method having two or more eluents

摘要

A low pressure anion chromatography apparatus that includes a first eluent reservoir that contains a first eluent, a second eluent reservoir that contains a second eluent, and a valve for switching flow between the first and the second eluent reservoirs. The low pressure anion chromatography apparatus also has a low pressure pump, an injector, an anion exchange column, and a detector. The low pressure pump, the injector, the anion exchange column, the detector and the first and second eluent reservoirs are in fluid communication with one another through a series of fluid conduits. A method of using the low pressure anion chromatography apparatus is also provided. The use of two or more eluents allows for a broader range of anions to be detected with a relatively inexpensive low pressure chromatography system.