Due to rising concerns over the carcinogenic properties of hexavalent chromium (Cr6+) in drinking water, many national and regional water standards are looking to lower the maximum allowable levels of total chromium and hexavalent chromium in potable waters. And in order to assess trace concentrations of Cr6+ in drinking water, it is necessary to have an instrument capable of measuring parts per trillion (ppt) concentrations of Cr and possessing a wide linear dynamic range – HPLC-ICP-MS is often the instrumentation of choice in such applications.
This work demonstrates an ion exchange method for the characterization of Cr6+ in potable drinking water using our NexSAR HPLC-ICP-MS Speciation Solution. Discover the advantages of the inert and metal-free fluid path of the NexSAR Inert HPLC coupled with the NexION® ICP-MS’ Universal Cell Technology™ for these types of analyses – download this application note.