Name:
ASTM D5257-11 PDF
Published Date:
03/15/2011
Status:
Active
Publisher:
ASTM International
1.1 This test method covers procedures for the determination of dissolved hexavalent chromium in wastewater, surface water, and drinking water.
1.2 The precision and bias of this test method has been tested in reagent water and industrial wastewater and has been found suitable over the range of approximately 1 to 1000 μg/L. See Table 1 for details. Higher levels can be determined by appropriate dilution.
1.3 Samples containing very high levels of anionic species (that is, chloride, sulfate, etc.) may cause column overload. Samples containing high levels of reducing species (that is, sulfides, sulfites, etc.) may cause reduction of Cr(VI) to Cr(III). This can be minimized by buffering the sample to a pH of 9 to 9.5, filtering it, storing it at
| File Size : | 1 file , 120 KB |
| Note : | This product is unavailable in Russia, Ukraine, Belarus |
| Number of Pages : | 7 |
| Published : | 03/15/2011 |
| Redline File Size : | 2 files , 220 KB |
