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TN26: Determination of Cr(VI) in Water, Wastewater, and Solid Waste Extracts
Description
The method presented here overcomes analyte interference by separating the two chromium using a detection method specific for Cr(VI) that is capable of handling the high-ionic-strength sample matrices generated in many leaching, and digestion procedures. Cr(VI) is separated as the divalent anion on the IonPac AS7 column using ammonium sulfate, ammonium hydroxide eluent. After the separation, Cr(VI) reacts with the color reagent diphenylcarbohydrazide (DPC) and detected by UV absorbance at 520 nm. This method is consistent with U.S. EPA Method 218.6. Please refer to AU179 for an updated method.| Market: | Water Analysis |
| Keywords: | Environmental Waters, Post column reaction, hexavalent chromium, High Ionic strength water, chromate, speciation, IonPac AS7 column, EPA 218.6, wastewater, oxidation states, Solid Waste Extracts, IonPac NG1 Guard Column |
| Matrix: | Environmental samples |
| Affiliation: | Dionex Corporation |
For Research Use Only. Not for use in diagnostic procedures.
