Method 218.6
Hexavalent Chromium
Scope
This method provides procedures for determination of dissolved hexavalent chromium (as CrO4 2-) in drinking water, groundwater, and industrial wastewater effluents.
An aqueous sample is filtered through a 0.45 um filter and the filtrate is adjusted to a pH of 9-9.5 with a concentrated buffer solution. A measured volume of the sample (50-250 uL) is introduced into the ion chromatograph. A guard column removes organics from the sample before the Cr (VI), as CrO4 2- , is separated on a high capacity anion exchange separator column. Post-column derivatization of the Cr (VI) with diphenylcarbazide is followed by detection of the colored complex at 530 nm.
-Method 218.6: Determination of Dissolved Hexavalent Chromium in Drinking Water, Groundwater, and Industrial Wastewater Effluents by Ion Chromatography, Rev. 3.3, EMMC Version, E.J. Arar, S.E. Long
Method Data
| Method 6020 | |
|---|---|
| Hold Time | |
| Preservation | |
| Sample Volume | |
| Collection Method | |
| Instrumentation | |
| Method Reference |
Analyte Test
| Analyte | Formula | CAS Number |
|---|---|---|
| Hexavalent Chromium | Cr 6+ |
*Please contact our project management team for more information about reporting limits and other specific project needs.
Request a Quote
If you would like us to provide a quote for laboratory analysis, just provide us with information about how we can help you with your project.