 |
| Purchase Information |
| Use this form to request purchase information on ASTM online subscriptions. |
|
|
Document ASTM D 5257 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
ASTM D 5257 Document Information:
Title
Standard Test Method for Dissolved Hexavalent Chromium in Water by Ion Chromatography
ASTM International
Publication Date:
Jan 10, 2003
Scope:
(Footnote *)
This test method covers procedures for the determination of dissolved
hexavalent chromium in
wastewater, surface water, and drinking water.
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.
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.
The values stated in SI units are to be regarded as the standard.
This standard does not purport to address all of the safety concerns,
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.
Footnote * - A Summary of Changes section appears at the end of this
standard.
Keywords:
- analysis
- hexavalent chromium
- ion chromatography
- wastewater
- water
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
