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AU179: Sensitive Determination of Hexavalent Chromium in Drinking Water
Description
The work shown here describes modification of the conditions described in EPA Method 218.6, including use of the column in the 2 mm format and a smaller reaction coil to increase method sensitivity. The modified method uses Dionex IonPac AS7 column (2 × 250 mm), a 1000 μL injection volume, and post column reaction (using a 125 μL reaction coil) followed by visible absorbance detection at 530 nm. This method permits an MDL for chromate of 0.001 μg/L. This results in a quantitation limit of 0.003 μg/L, which is more than sufficient for analysis at the proposed California PHG level of 0.02 μg/L.| Market: | Environmental |
| Keywords: | Drinking Water, Post column reaction, hexavalent chromium, LCMRL, UV detection, chromate, IonPac AS7 column, Public Health Goal, EPA Method 218.6, EPA Method 218.7 |
| Matrix: | Drinking water |
| Author: | Lipika Basumallick and Jeff Rohrer |
| Affiliation: | Thermo Fisher Scientific |
For Research Use Only. Not for use in diagnostic procedures.
