prSRPS EN ISO 18724:2023

Kvalitet vode- Određivanje rastvorljivog hroma (VI) u vodi- Fotometrijska metoda

Water quality -- Determination of dissolved chromium(VI) in water -- Photometric method

Apstrakt

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 �g/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 �g/l Cr(VI). When
using coupled techniques (e.g. IC-PCR), Cr(VI) concentrations 0,02 �g/l can be determined.
The NP is based on DIN 38405-52:2020-11.

Povezane direktive

Direktive povezane sa ovim standardom