ASTM-D5257 › Historical Revision Information
Dissolved Hexavalent Chromium in Water by Ion Chromatography, Standard Test Method For
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Scope
1.1 This test method covers procedures for the determination of dissolved hexavalent chromium in waste water, surface water, and drinking water.
1.2 The precision and bias of this test method has been tested in reagent water and industrial waste water and has been found suitable over the range of approximately 1 to 1000 [mu]g/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 4°C and analyzing it within 24 h.
1.4 The values stated in SI units are to be regarded as the standard.
1.5 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
Chromatography-ion; Chromium content-water; Hexavalent chromium; Wastewater testing/treatment; dissolved hexavalent chromium-water, by ion chromatography, test; ICS Number Code 71.060.50 (Salts)
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Document Number
ASTM-D5257-97
Revision Level
1997 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Dec. 10, 1997
Document Type
Test Method
Page Count
6 pages
Committee Number
D19.05