DIN EN ISO 18724:2026-06
Water quality - Determination of dissolved chromium(VI) in water - Photometric method (ISO 18724:2025); German version EN ISO 18724:2025
| Fecha edición: |
2026-06-01
En Vigor
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| Idiomas disponibles: | Alemán |
| Resumen: | 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. |
| Keywords: | Anions|Cells (glass)|Chromium|Chromium content|Chromium(VI)|Cooling water|Coupling|Determination|Determination of content|Drinking water|Eluate|Examination of sludge|Examination of waste water|Methods|Photometric|Photometry|Photometry (chemical analysis)|Procedures|Reagents|Sample preparation|Sewage|Soluble|Surface water|Technology|Untreated water|Water|Water practice|Water testing |
| ICS: | 13.060.50 - Determinación de sustancias químicas en el agua |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 18724:2025 Idéntica ISO 18724:2025 |
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Reemplazo Normas |
Reemplaza a DIN 38405-52:2020-11 Reemplaza a DIN EN ISO 18412:2007-02 Reemplaza a DIN EN ISO 18724:2024-07 Reemplaza a DIN EN ISO 23913:2009-09 |
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