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Abstract

This document specifies a method for the determination of organically bound halogens fluorine, chlorine, bromine and iodine which are adsorbable on activated carbon. Adsorption takes place on activated carbon packed in columns. The method is applicable for the determination of: — ≥ 2 µg/l AOF, expressed as F; — ≥ 10 µg/l AOCl, expressed as Cl; — ≥ 1 µg/l AOBr, expressed as Br; — ≥ 1 µg/l AOI, expressed as I. The method is applicable for the determination of adsorbable organically bound fluorine, chlorine, bromine and iodine in water, e.g. in groundwater, surface water, bank filtrate, drinking water, aqueous eluates, cooling water and wastewater. The working range is limited by the capacity of the activated carbon, the process blank and the capacity of the chromatographic separation column. Sample dilution into the working range can be required. The range of application can be extended to lower concentrations with lower process blanks e.g. using low blank activated carbons. The method can also be applied for samples containing suspended solids. Halogens adsorbed on the suspended solids (e.g. undissolved halides) are also determined. Filtration of the sample prior to analysis using a membrane filter (0,45 µm) allows the separate determination of dissolved adsorbable and particulate bound fractions of organically bound fluorine, chlorine, bromine or iodine.

Begin

2023-05-11

WI

00230430

Planned document number

DIN EN ISO 18127

Project number

11904878

Responsible national committee

NA 119-09-01-12 AK - Ion chromatographic 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 adsorbable organically bound fluorine, chlorine, bromine and iodine (AOF, AOCl, AOBr, AOI) - Method using combustion and subsequent ion chromatographic measurement (ISO/DIS 18127:2024); German and English version prEN ISO 18127:2024
2024-08
Order from DIN Media

previous edition(s)

German standard methods for the examination of water, waste water and sludge - Parameters characterizing effects and substances (group H) - Part 59: Determination of adsorbable organically bound fluorine, chlorine, bromine and iodine (AOF, AOCl, AOBr, AOI) using combustion and subsequent ion chromatographic measurement (H 59)
2022-10