Method SM 3500-Cr B
Hexavalent Chromium
Scope
The colorimetric method is useful for the determination of hexavalent chromium in a natural or treated water in the range from 100 to 1000 ug/L. This range can be extended by appropriate sample dilution or concentration and/or use of longer cell paths.
This procedure measures only hexavalent chromium, (Cr6+). For total chromium determination, acid-digest the sample and follow with a suitable instrumental analysis technique. The hexavalent chromium is determined colorimetrically by reaction with diphenylcarbazide in acid solution. A red-violet colored complex of unknown composition is produced. The reaction is very sensitive.
-Standard Methods Online – Standard Methods for the Examination of Water and Wastewater
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.