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Hexavalent Chromium in Drinking Water, Wastewater & Soils by Ion Chromatography
Hexavalent chromium (Cr6+), a suspected carcinogen, is measured in drinking and wastewater by US EPA method 218.6 and in soils by SW846 method 7199. Both of these methods use anion exchange chromatography followed by diphenyl carbazide (DPC) post
Written byMetrohm
Metrohm is a leading provider of instruments and services for chemical analysis in the lab and in the field, specializing in titration, ion chromatography, electrochemistry, and spectroscopy. Their high-precision systems and comprehensive analytical solutions serve a wide range of industries, including pharmaceuticals, chemicals, and environmental testing.
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US EPA method 218.6 and in soils by SW846 method 7199. Both of these methods use anion exchange chromatography followed by diphenyl carbazide (DPC) post column chemistry. This produces a colored complex of Cr6+ which can be detected by UV/VIS using a Metrohm 850 Professional IC with 858 Autosampler and a Lambda 1010 UV/VIS detector achieves detection limits down to 0.2ppb.
