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DIN Standards Committee Water Practice

Abstract

This document specifies a method for the photometric determination of dissolved chromium(VI) using manual, e.g., hand photometry, or automated static, e.g., discrete analyser system, or automated dynamic techniques, e.g., flow injection analysis (FIA), continuous flow analysis (CFA), or ion chromatography with post-column derivatization (IC-PCR). Typical areas of application for the static techniques as well as FIA and CFA are samples with Cr(VI) concentrations 2 µg/l in raw water, drinking water, surface water, aqueous eluates, cooling water and treated wastewater, provided that the Matrix does not contain any reducing substances. When using cuvettes with large optical path lengths, e.g. >100 mm, the range of application can be extended to concentrations 2 µg/l Cr(VI). When using coupled techniques (e.g. IC-PCR), Cr(VI) concentrations 0,02 µg/l can be determined. The NP is based on DIN 38405-52:2020-11.

Begin

2023-05-11

WI

00230431

Planned document number

DIN EN ISO 18724

Project number

11904879

Responsible national committee

NA 119-09-01-28 AK - Phototmetry methods  

Responsible european committee

CEN/TC 230/WG 1 - Physical and biochemical methods  

Responsible international committee

ISO/TC 147/SC 2/WG 33 - Ion chromatography methods  

draft standard

Water quality - Determination of dissolved chromium(VI) in water - Photometric method (ISO/DIS 18724:2024); German and English version prEN ISO 18724:2024
2024-07
Order from DIN Media

previous edition(s)

German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 52: Photometric determination of dissolved chromium(VI) in water (D 52)
2020-11