As of July 1st, the California Department of Public Health is the first agency to enforce a lower limit of 10ppb for hexavalent chromium (CrVI) in drinking water. A national limit review by the U.S. Environmental Protection Agency (USEPA) is expected to follow soon. Metrohm has recently introduced new CrVI packages featuring its 900 series Ion Chromatography systems, with guaranteed methods that easily exceed the proposed limits of 10 ppb and identify levels down to ultra-trace parts per trillion.
CrVI is a strong oxidizing agent and known carcinogen and mutagen that has been proven to aggressively damage DNA. It occurs both naturally and, more frequently, as a result of industrial processes. Metrohm’s 930 IC Flex is a dedicated analyzer configured for EPA Method 218.7 and the analysis of CrVI in drinking water, while the 940 Professional IC Vario can be expanded to include EPA 300 (anions), EPA 314 (perchlorate) and ASTM D6919 (cations) in series or parallel.
The U.S. EPA and other global regulatory agencies commonly collaborate with Metrohm technology experts during method development and the company’s instruments are written into a variety of regulatory methods – including the most recent update of EPA Method 218.7. Method 218.7 provides procedures for the determination of hexavalent chromium as the chromate anion CrO(4)2- in finished drinking water using ion chromatography.
About Metrohm AG
Metrohm is a leading manufacturer of laboratory and process instruments for chemical analysis. Metrohm is unique in offering solutions for all varieties of ion analysis (potentiometric and Karl Fischer titration, voltammetry, ion chromatography, pH, ion, conductivity, and stability measurement). The Metrohm portfolio also includes software, dosing systems and solutions for laboratory automation. Metrohm is owned 100% by the Swiss Metrohm foundation and is represented in 80 countries by their own subsidiaries or exclusive distributors, respectively. Customers are supported with unparalleled application know how and service. Read more on http://www.metrohmusa.com